I normally answer that question by simply saying "hundreds". The reason I can't be more precise is because this is a more complex question to answer than it might seem. The number of times a battery can be recharged depends on how the battery is used. An analogy that is sometimes used is to compare a rechargeable battery to a loaf of bread. Suppose someone asked, how many slices can be cut from a loaf of unsliced bread? The answer, of course, depends on how thick or thin the bread is sliced. If the slices are very thin it can be cut into more slices. The same is true for recharging a battery. Every time a rechargeable battery goes through a charge and discharge cycle it loses a tiny bit of capacity. Shipping Information×. View Larger Image. Global NiMH Battery Pack Charger. SKU: W41399. $33.68 (USD)
Richard, I’d highly recommend just about any of the brands of low self-discharge AA batteries like the Sanyo Eneloop, Powerex Imedion, or Energizer Recharge (made for Energizer by Sanyo). The latter are what I currently use in my Canon SX20IS (which uses 4xAA), and I typically shoot a few hundred pictures and about 1.5h of video between charges. Because these are low self-discharge, I also don’t need to worry about them running down when the camera is just sitting in the drawer.. Ohjelmanvalintaikkunassa valitset STOP ja - -näppäinten avulla joko NiCd- tai NiMH-akun Akumulatory NiMH przez bardzo długi czas rozładowują się, nieznacznie obniżając napięcie na wyjściu, jednak niski stopień naładowania powoduje gwałtowne obniżenie się napięcia You probably mean to ask: What is the self discharge rate of a NiMH battery? The rate of self discharge for any battery depends on the temperature at which it's stored. Stored at 70 degrees F (20 C) NiMH batteries will lose up to 40% of their charge within a month. If they are stored at a higher temperature, they will self discharge at an even higher rate. NiMH batteries stored at a lower temperature self discharge at a lower rate (Self discharge chart available soon). Nickel Metal Hydride batteries and cells require charging in the right manner to ensure a long life - charging rates Nickel Metal Hydride, NiMH Battery includes: NiMH charging NiMH self-discharge
Stefanv, what do you think of using a pulse timer with a dumb wall charger, such as the TME trickle charger on NiMH or on the new Eneloop cells. I have been using them on my R/C receiver and TR packs for several years and they seem to work fine. I leave them on charge all the time. Am I hurting the packs? Thanks kerry Since your camera uses only 2xAA, I’d recommend a small charger like this one: http://www.amazon.com/dp/B007W1Y6PK
Which is the best brand? My personal favourite is Sanyo. Before the switch from NiMH to Lithium-Polymer in the electric model airplane hobby, Sanyo was king. Their batteries took the abuse that we dished out (charging in under 20 minutes and then running at such high currents that we depleted them in 5 or 6 minutes) and kept on working for years. My experience with Sanyo’s consumer AA batteries has been the same; they hold up after years of use and hundreds of recharges.I can’t help wondering if some clever Chinese electrical engineer couldn’t put together a fairly inexpensive charger that employed some non-patented variation on one of the patented pulse or reflex charging technolgies?. They would get extremely hot to the touch. I would “flick” the batteries out of the wall charger for them to cool down. In the cold winter, I would take them out to the garage to cool. Well, that wall charger after two years smoked and burnt up. I have a Vanson Electronics V-1199 charger for AA (320mA), AAA (130mA), C & D (400mA) and 9V (15mA). It’s IC controlled timer. NiCd 4-hrs and NiMH 8-hrs. http://www.batteryjunction.com/vavaaaaacd9v.html http://www.batteryjunction.com/vavunbachwit.html Not once have any of the rechargeable batteries ever got warm. Even the no-name solar light brands charge well with it. It states to be a fast charger, but 4-hrs/8-hrs is not very fast. Thus, I had purchased more batteries to swap as I need them. All prices are in USD © 2020 Greenbatteries.com. Sitemap
Mini 5 cell NiMH rechargerable battery, perfect for mini projects. Gens Ace 800mAh 1.2V AAA NIMH 4pcs AAA Rechargeable Battery4/10/2012 The solution to this problem is to not overcharge the batteries. If using a dumb charger, remove the batteries from the charger after 14 to 16 hours, or sooner if they weren’t fully discharged yet. Better yet, use a smart charger that stops automatically when charging is complete.If you’re simply trying to determine when it’s best to charge stored but unused Eneloop batteries, it’s simple: just charge them once every 6 months and they’ll always be above 90% capacity.
batería de NiMH. However, NiMH batteries lose charge more quickly, hampering their widespread en NiMH batteries are the newest competitor to nickel-cadmium (Ni-Cd) batteries since they have a.. Although a fresh disposable battery provides about 1.5V, the voltage gradually drops as the battery is used up. Most electronic devices will continue to work even when the battery reaches 1.1V. A NiMH or NiCd battery is likely to deliver much closer to its rated capacity when it's powering high drain devices. Alkaline batteries have a high rated capacity, but they can only deliver their full capacity if the.. There are four important characteristics of any battery: voltage, maximum current, capacity, and self-discharge rate.For what it’s worth, I currently have a pair of Eneloops in my cordless shaver and a single Eneloop in my laptop mouse, and for a trip of one week or less, I leave the charger at home (I like to travel light).
The NiMH battery can be charged by your compatible outdoor handheld device — simply charge your device using an AC adapter or the USB cable on your computer and your battery pack will be back to.. If it were me, I’d just use a discarded 5V power adapter and a 27 Ohm 1 Watt resistor to limit the charge current to 130mA (the C/10 rate for a 1300mAh cell), and slow charge it for 15 hours. Stream Tracks and Playlists from NiMH on your desktop or mobile device Stefan: thanks for your informative article on your site. I am presently having trouble with phone batterys how to tell if OK. I am consering buying a battery charger & NMH batterys for a camera and saw some at Extra Foods (Loblaws)in B.C.which seem to be exact copies of Sanyo, chargers made in China but batterys low discharge from Japan. Do you have any info on these Marked P.C. (Presidents Choice). I would like to donate 1 or 2 slide rules to your collection if I can find them after my recent move if shipping costs are not too high Thanks Harold A. Hi Stefan! I enjoyed reading your article. It was very informative. However, I do have a question.
I know it's meant to be best to charge NiMH batteries for like 12 / 15 hrs but if you do want to charge them faster is there a recognised charge rate between speed and not doing much damage to the battery ie is 0.5 C much better than 1C does.. LiPo, LiFe, LiHV ja NiMh laturi joka toimii seinäpistorasiasta. Tasaava lataus 2-4s LiPo/LiFe akuille ja normaalilataus 4-8s NiMh akuille. Liitä vain akku laturiin ja lataus alkaa ja loppuu automaattisesti
Stefan, you have convinced me to use low-self-discharge batteries instead of traditional NiMH batteries. However, at present I can’t get Eneloop batteries just the new Sony CycleEnergy batteries. So, are these Sony batteries a good alternative? By the way, if I can get Eneloop batteries I can charge them in a Sony BCG-34HRMD4 battery charger? Thanks in advance!I use only rechargeable AA batteries in my Spin Brush toothbrush. Something that is very frustrating is that Synergy brand AA’s are slightly larger in diameter than the rest. Enough that they bind up in the battery compartment so it won’t run. Worthless to me. Thanks Synergy!!I have a new FRS/GMRS radio that uses a NiMH battery pack. I was going to put the dumb charger that came with the radios on a digital timer so that it would turn on the charger for 4 hours per week. I noticed in your article that you were doing something similar, but charged for 30 minutes per day. Is there a benefit to using one approach over the other? Was leisten AA-Akkus? Wir haben Kapazität, Leistung, Selbstentladung und Lebenserwartung von Mignon-Akkus getestet und mit Einwegbatterien verglichen I haven’t run any formal capacity or cycle life tests (don’t have the equipment), so can’t tell if I am getting full capacity and/or if the repeated 15 minute charging will reduce the cycle life of the long-charge-retention cells. (The regular cells didn’t hold up very well, but the high charge temperatures suggest that they were getting pretty well beaten up. On the other hand, the long-charge-retention cells seem to be holding up OK–the much lower charging temperature suggests that they are much more able to tolerate the high charge rates (7 amps AA, 4 amps AAA, per mfr’s specs for both chargers) of the "15 minute" chargers.)
Is it safe to use batteries from one brand with a charger from another brand? I have a GP charger and can’t find GP batteries since I moved. I found a local brand that matches the mAh requirements on my GP PowerBank but they specially say in the guidelines to use only GP batteries. Are they just up selling or is it really unsafe?Voltage is measured in Volts (V). Single-cell disposable alkaline batteries such as the common AAA, AA, C, and D sizes have a nominal voltage of 1.5V. The same sizes of NiCd and NiMH batteries provide only 1.2V. This lower voltage might seem to be a problem, but in most cases it isn’t.
I don’t know what type of charger they are, but I suspect slow trickle type. On open contacts across a digital meter they deliver about 8v at 0.3A. The batteries I have just taken out report anything from 1.2 to 1.35 V and will only give 1 to 2 A (they are 1000 mAh AAA’s). A new set I have just put in delivered 9A even "uncharged".A good fast charger is much better for the battery than blindly slow charging it. However, a bad fast charger (one that doesn’t turn off very soon after charging is completed) can damage batteries too. Skip to the beginning of the images gallery. Frecvent Cumparate Împreună. Acumulator NiMH 8.4V Scrie un review. Spune-ne parerea ta despre acest produsAcumulator NiMH 8.4V 1600mAh 8Fields Find Rechargeable NIMH Battery manufacturers from China. Import quality Rechargeable NIMH Battery supplied by experienced manufacturers at Global Sources
There is no such thing as the memory effect for any NiCad battery operating on Earth. Perhaps in space :). Well done! Now I understand how all those rechargable batteries work, and I made up my mind about the next ones to buy!! Thank you very much!What kind of batteries does your camera currently use? Are they AA size? If so, I’d recommend Sanyo “Eneloop” or Energizer “Recharge” rechargeable batteries, along with a charger intended specifically for them. For example, this item: http://www.amazon.com/dp/B000IV0REA Yes, you can use them. However, if they are not the low-self-discharge variety, you might find that they’re dead after a month or two.
Very informative article Stefan, much thanks. Now I realize what kind of AA NiMH batteries I need for my RC transmitter: low self-discharge batteries with at least 2000mah capacity.If I unplug the charger and let things cool down, upon plugging it back in, it will go through another charging cycle. After the third cycle I began to wonder:
As NiCd and NiMH batteries age, users often observe that they last less and less long between recharges. This is usually attributed to a phenomenon called “memory effect”, caused by repeatedly using only part of the battery’s capacity before recharging it. The battery appears as if it “remembers” that only part of its capacity was used before it was recharged, and thus refuses to deliver more than that.Noël, I’m in the software business. I tried the NiZn batteries (the manufacturer sent me some at my request), but after their charger destroyed 4 of them, I never heard from the company again, so I have serious doubts about their quality. If the gear is designed for 1.5V alkalines, then the 1.6V batteries are probably fine.I’ve done some experimentation with this and determined that multiple retries with the batteries will get the thing started charging. That says to me that the charger is falsely detecting excessive charging current on drained batteries which, once they get enough charge in them to raise the internal voltage some, no longer trigger the excess current detection.Rechargeable alkalines work well for some uses but, they are not a good alternative for use in digital cameras. They typically have an even lower capacity than standard alkaline batteries. This means that if a standard alkaline only lasts for a few exposures, a rechargeable alkaline will last for even fewer!Discharge of a healthy NiMH battery (blue) and one suffering from voltage depression (red). Notice that the lower curve crosses the cut-off level (green) sooner, resulting in an apparent reduction in capacity.
Akkulaturit NiCd/NiMh. LED Virtalähteet. Teholähdetarvikkeet. Teholähteet. Laturit. Akkulaturit NiCd/NiMh Mark, if the company says that rechargeable batteries can damage the camera due to voltage, they are lying. NiMH rechargeable batteries start with a lower voltage than alkaline batteries (although alkalines will drop to the same voltage, whereas the NiMH voltage remains relatively flat, as shown in the graph). I suspect that they may be trying to avoid complaints, since regular NiMH batteries run down so quickly, even if the camera draws very little power. Průmyslové články technologie NiMH v nejpoužívanějších rozměrech pro stavění akupacků pro velké množství aplikací. Jmenovité napětí je 1,2 V. Napětí (naprázdno) plně nabitého článku je 1,4 V..
BatteryJunction has a large selection of NiMH batteries from brands like Duracell, Panasonic, and Energizer I had some AA and AAA (various mAh’s ) GP type (and other types) NiMH batteries, and since they were not working, I mean the charger(s) refused to charge them – because of my mistake, I had left them uncharged and/or unused for a few months to year(s) – and I was sad because of the money I had spend… Brands to stay away from are those you’ve never heard of. I personally also have not had much luck with rechargeables from the two big brands of disposable batteries. Think about it: if your primary source of income was the repeated sale of high quality disposable batteries, would you jeopardize that business by selling a rechargeable battery that only needs to be replaced every five or ten years?I am myself an electronics engineer I consider buying such a charge a foolish engineering decision!!!
A serious concern with NiCd batteries is that cadmium is a very toxic metal, making battery disposal problematic. Many NiCd batteries have made their way to landfills, contaminating our environment. Now, recycling of NiCd batteries is mandated by law in most western countries.Terrific article, thanks! I just bought an expensive headlight for my bike, a Dinotte that uses rechargeable AA NiMH batteries. Wanted to know how to handle recharging the batteries to be sure I’ve always got a fully-charged set on hand. I won’t use the headlight more than two or three times a month, but when I need it, I’ll really need it.Very informative. One query: I have 15 cell 1500 mah nimh battery of 10c/15c burst. I want to use this for electric flight.I am experiencing a huge voltage drop under load….from 19.5V to 12 V for just 6A current drawn. What am I missing here? Voltage returns back to normal as soon as the load is off. first new NiMH in a long time begins it's life as a 16 measure loop. Let's see where it goes fom here..
Using your http://www.stefanv.com/electronics/eneloop/cycle5.gif test, the cells don’t hit 1.2 volts until about they’re about 20% gone — and this is at a relatively large discharge rate — given that this was 2007, they’re probably 2000 mAh Eneloops, so over C/2.The newer low-self-discharge batteries like Sanyo’s Eneloop are designed to hold their charge in storage. Sanyo recommends storing them at low temperatures, so the fridge might be a good place. It’s probably also worthwhile to recharge them once a year or so.
A NiMH battery will not reach its maximum potential until 4 cycles. The 1600 NiMH is a 1.6 amp per hour battery. In other words, if you discharged it at 1.6 amps it would be completely dead in 1 hour If you use NiCd batteries you should be aware that most of the problems experienced by NiCd battery users are not due to a "memory effect" but are due to overcharging or improper storage. Overcharging is usually caused by poorly designed first generation battery chargers. These chargers continue to deliver current to the batteries even after the batteries are full charged. "5- hour" and "8-hour" timer type chargers can damage NiCd or NiMH batteries if they are frequently used to charge batteries that are only partially discharged. I also used to fly RC planes (gliders, in Ventura mainly, when I lived in Ojai), and used some of the chargers made for RC enthusiasts.The 2100 mAh low self-discharge battery on the other hand would only be good for 210 days in theory. In practice, you’d probably get around six months out of it (because low self-discharge doesn’t mean _no_ self discharge). Thank you v. much for the info! The Ni-MH batteries in my DAB pocket radio had reached the end of their lives & I didn’t have a clue as to how to replace them. The manufacturers website was less than useful… Now I feel confident that I can replace them without damage to the radio & listen to hours of uninterrupted cricket coverage again 🙂
Ah, I see. But for all intents and purposes, it does start out at 1.2V, since the 1.4V doesn’t last long enough to do anything useful with it. I’ll add a parenthetical comment to that effect.Stefan, a very helpful article and hopefully the start of a more scientific diagnosis of my problem with cordless DECT phones (and for many others as well.
Eneloop BQ-CC61 NiMH-laturi. Laadukas Eneloop-peruslaturi lataa luotettavasti kaikenlaiset 1,2V AA- ja AAA-akut. Kun laturi liitetään 5V USB-virtaan, se lataa akkuja n. 10 tuntia ja katkaisee latauksen.. Babs, they are more or less interchangeable, but the problem with solar lights is that they charge at a low current until the battery is full but then continue to overcharge the battery. NiCd tolerates this better than NiMH, but the currents are probably low enough that it will be fine. I ask because … 1) NiMH cells start at 1.41 volts, not 1.2 volts like you say, and 2) the discharge curve isn’t quite as flat as you drew.
The slight rise is also not uncommon. If the battery has been sitting for a while, the electrolyte can settle out slightly. Once it starts discharging, especially at high rates, things even out as it warms up. The internal resistance decreases, and the output voltage increases.At the same time as our battery-powered device use has increased, rechargeable battery technology has improved dramatically. Unfortunately, information on the proper care and use of these batteries can be hard to find. This article attempts to provide this information and answer the questions I am often asked. NIMH Battery Pack. JumpStart Intelligent Fast Charger for AA & AAA NiMH Batteries. NiMH Rechargerable AA Battery 2200 mAh 4 Pieces. $6.83. Out of stock Comparison of the discharge voltage of an alkaline battery (red) and a NiMH battery (blue). The green line is the voltage at which the battery is considered dead.hi stefan i rebuilt a battery pack that had nicd batterys and i used nimh. will they charge in the same charger. thanks don
Nimh definition, National Institute of Mental Health. See more. National Institute of Mental Health. Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random.. I know exactly where you’re coming from. I remember when I was a kid, and the TV would break, my Dad would get the schematics, troubleshoot it, and fix it. Same thing with service manuals for cars. Given that there are a number of adjustment pots, perhaps the device isn’t as complicated as it seems. Are you sure one of the chips is a microcontroller?Also, slow chargers are often claimed to be more gentle. It seems obvious that some of the 15-minute chargers are damaging the batteries, or significantly shortening their useful lifespans.
Keep in mind that it will take a little longer to charge a higher capacity battery. (Staying with the fuel tank analogy from above, it would also take longer to fill a 20 gallon gas tank than a 12 gallon tank). Unfortunately, the people using them in Arizona don’t have much choice about the temperature. It is what it is, but prolonged storage at 100˚F won’t damage the batteries. Also, storage at low temperatures won’t hurt them at all. They will have a lower capacity AT those temperatures, but once they have returned to more normal temperatures, they will bounce back. I used to fly my NiMH powered radio controlled planes at -10˚C (16˚F), and the first flight of the day usually started out rather anemic, but using the batteries warmed them up, and subsequent flights were the same as on a comfortable summer day. BU-408: Charging Nickel-metal-hydride. Know how to apply the correct charge to moderate heat and prevent overcharge. Nickel- and lithium-based batteries require different charge algorithms NiCd and NiMH chemistry-based batteries have very similar characteristics from the point of view of charging and discharging properties. The typical midpoint voltage is equal to 1.2 V.. What’s really amazing is that if you call the manufacturers and ask them for the information they’ll get all huffy and tell you it’s “proprietary”, and then they’ll try to *sell* you a *replacement* product, as though you’re so stupid you’ll buy ANOTHER piece of junk from them! (When all else fails I like to respond with “well, I guess I’ll just have to trace the schematic myself and post it on the Internet”, just to see them go ballistic… fun, but not much help). (This device is too complex to deal with that way, in any case…).
Do you lose roughly 50% of lifespan, or just 10% or so? Less? More? It probably depends largely on the charger; yet I’m sure this issue has been covered somewhere in the engineering community, and that there are graphs and formulas that give a good sense of how much damage is occuring under what conditions.The “bad” fast chargers are the ones that take an hour or less. The “good” ones generally take 2 to 5 hours. Most (if not) all of them use the voltage method, and many use the temperature as a backup.If you will be using your batteries immediately in a high-drain device such as a digital camera in a day-long photo session, freshly charged conventional NiMH batteries are suitable. If on the other hand you will put them in a device with very low drain and/or one that is expected to run for a long time such as a TV remote or a wall clock, low-self-discharge batteries are a better choice. In fact, even a high-drain device that is used intermittently, such as a point-and-shoot digital camera that you keep in your pocket or purse, is better off with low-self-discharge NiMH technology.
3.0 Nickel Metal Hydride (NiMH). 3.1 NiMH Principles of Operation. These metal alloys contribute to the high energy density of the NiMH negative electrode that results in an increase in the volume.. If voltage is water pressure and current is flow rate, capacity is the total amount of water available. A higher capacity battery holds more than a lower capacity battery. At a given current (flow rate), the higher capacity battery will provide its voltage (pressure) for a longer time.
Vain rekisteröityneet käyttäjät voivat kirjoittaa arvosteluja. Kirjaudu sisään tai rekisteröidy So what happened? For comparison sake I tested three other batteries from the same batch that had never been used since I charged them. They ALL read 1.34 volts. That electronic flash gun must have some internal trickle leakage that is present even when the unit is shut off. From now on I’ll keep the batteries removed from that flash until I need to use it. The Eneloop charger warns to not store the batteries in the charger unless you are actually charging. In fact the charger came with a piece of cardboard inserted to prevent just that situation on the store shelf.
High performance battery chargers with a minimum charge rate of 4 to 5 amps are required to completely charge some of today's high-capacity (3000 - 5000 mah) NiCad and NiMH batteries in one.. Instead of a trickle charger, a regular overnight charger connected to a timer can keep a NiMH battery charged.mAh stands for milli Ampere hour or milli Amp hour. It is a measure of a battery's energy storage capacity. If you think of a battery as a small fuel storage tank, which in a sense it is, mAh a measure of how much "fuel" the battery holds. (This is roughly comparable to using gallons to measure how much fuel a gas tank can hold. The more gallons of capacity, the more fuel the tank can hold.) With a battery the higher the mAh rating the more electrical energy it can store.Don, it depends on the charger. If it has a sensitive enough charge-completion detection, it will work fine for NiMH.I purchased a Duracell 15 min. Charger CEF15NC , and it physically toasted the four Nickel Metal Hydride batteries that came with it. They came out crinkled and looking very shabby, in spite of the fan that is supposed to cool the batteries while they are charging. I believe they do this on purpose to stop people from buying rechargeable batteries ! I now bought the SONY BCG-34HRME slow charger that is advertised right in your column; and WOW what a difference ! It actually refreshes (Discharges) the batteries, to make a complete charging cycle every time (Optional), and to my surprise, you can actually charge only one battery it you wish. (The Duracell requires a minimum of two batteries to operate.)
NiMH Batteries by Maha PowerEX. Shipping from Canada -- no customs/duty hassles or hidden fees You should redo that NiMH vs. Alkaline discharge graph and actually specify what sort of battery and what discharge rate you used. I suspect that the currents used for Alkaline and NiMH were different for that graph. (Certainly, a typical AA alkaline won’t handle 1.2 amps of discharge well, like you did in discharge0.gif.)
Laturi / latauslaite. - Latausjännite: 7,2 V - 18 V - Latausaika: noin 45 min (1,5 Ah) - Akkutyyppi: NiCd, NiMh, Li-Ion - Jäähdytystuuletin - Ylilataus- ja kuormitussuoja Akut. NiMh. Kyosho autot & veneet. > Tarvikkeet>Hehkulaite NiMh akulla + laturi. Näytä suurempana
In this area, NiMH batteries have a big advantage over alkalines, being able to deliver significantly more current. This makes them well suited to high-current devices like digital cameras. As mentioned above, early NiMH batteries could not supply as much current as NiCd batteries, but this is no longer the case, with NiMH having surpassed NiCd in this area. hello guys… , i have a 12 volts 3800 mah battery , and i have an AC-DC adaptor its output is 12v , and 1000 mah
The mid 1990s saw the introduction of Nickel-Metal-Hydride (NiMH) batteries. These had very similar properties to NiCd, but with higher capacity, and more importantly, no super-toxic components. The only drawback of NiMH compared to NiCd (at that time) was a lower maximum current. High-current applications like cordless power tools and electric powered model aircraft and cars continued to use NiCd batteries for some time. As of 2008, some power tools still use NiCd batteries, although model aircraft have switched almost entirely to NiMH and Lithium-Polymer batteries.I have a 9V (9.6 Actually) 230 mAh that I am designing a circuit for. What is a safe voltage and current for me to use it for?I thought I could put the batteries in and let the charger charge them, with the charger turning itself off after reaching a 100% charge.Now I am buying some AA/AAA chargers, and am still a bit confused on a couple of issues. There is a one-hour charger made by Lenmar (sold at Amazon.com) that claims to use a different technology ("Neotherm") to keep the batteries cool while charging.
Anyway, I’m hoping that this charger isn’t just marketing hype, and that the fan will at least do the job. Quick question: Do I need to balance or equalize NiMh cells? I usually charge at 4 to 5 amps, race/run, let them cool, Deans 15 amp discharge light bulb unit I am a frequent European traveler. About to leave on a 2+ week vacation. As usual I will be taking my excellent little Canon PowerShot SX100 IS point and shoot camera which delivers excellent pictures. Problem is that it “eats” AA batteries like mad. I am through battling this problem and am considering the rechargeable battery route. I know little about it. The Internet info is confusing. How many batteries should I take? What brand? What charger would work the best? I will be using European current, of course. Economy is not my major concern; having to constantly stop and change batteries is. Your help would be GREATLY appreciated and followed. Many thanks in advance.That charger will work on European current, but you’ll need an adapter to make the plug fit of course.Your discharge curve chart … did you just draw that, or did you actually measure it? And if you did measure it … for what batteries and what discharge rate?
Other than using low-self-discharge batteries, one way to ensure you always have a set of NiMH batteries ready for use is to attach them to an appropriate trickle charger. A trickle charger is similar to a slow dumb charger, except that it’s even slower. Typically, the charge rate is only slightly more than the self-discharge rate of the battery. The trickle charger produces only enough current to keep the battery from self-discharging. Think of filling a bathtub with an eyedropper, just fast enough to make up for the water that’s evaporating. NiMH battery outperforms other rechargeable batteries and has higher capacity and less voltage The positive electrode is a nickel oxy hydroxide (NiOOH).Alkaline batteries have approximately 3000 mAh..
Protection Circuit Module (PCB) for 20S (24V, 7A limited) NiMH/NiCd Battery Pack with 65C thermostat and Fuel Gauge Socket NiMH batteries are more prone than NiCd to damage caused by being left connected to a dumb charger, so such chargers are starting to disappear from common use.Unfortunately, it is. Digital cameras use alkaline batteries at a shockingly fast rate. (For an explanation why, see the following question). If you are using lots of alkaline batteries for your electronic devices you'll probably want to switch to rechargeable NiMH batteries ASAP. Not only will the NiMH batteries power a digital camera (or most other electronic devices) much longer than alkaline batteries will, but they are much less expensive to use. Rechargeable 'C' NiMH, & NiCd Batteries & Chargers. NiMH batteries require a NiMH battery charger
1. Should I charge my Eneloop 2000 mAh AA batteries with my Sony BC-CS2B charger. Charger Specs Input: 4-8-8.5 VA, 3W Output : 1.4V, 400 mA ? BatteryJunction has a large selection of NiMH batteries from brands like Duracell, Panasonic, and Energizer If the batteries are of the same type, i.e. both are NiMH or both are Lithium-ion, then you can use a higher capacity (i.e. higher mAh) battery instead of the lower one. The reverse is also true. Using a higher mAh rated battery will allow the device to run longer on a charge. So a camera should take more pictures and a music player can play more songs.Also, you seem to have the NiMH voltage *increasing* slightly during the discharge, which really doesn’t happen in the real world.I read somewhere that it’s important to charge them with the right amount of time, but I can’t find anywhere that specifies this.