I'm sorry thiago but the question is impossible. The charging time depends on the charger, and what current you set the charger too. If you use a charger with a low charging current the charging takes a long time. For getting faster charging you need a charger capable of higher currents. Look for a model that uses a current of at least mA for safer detecting of batteries being fully charged and both temperature and voltage monitoring of the batteries.
Then the charging time will be down to around 4 hours, maybe a little more. I use the La crosse BC with my Eneloops and everything is fine; you can set the current, you can refrsh the batteries let the charger emptieng them before the charging cycle starts and it works well with batteries of different capacities.
Just check that you get one with firmware 0. You can test this by plugging it into the outlet. The firmware is shown in the rightmost LCD dispaly a few seconds. You can discard the bundled Sanyo mAh AA which are crappy, and still cheaper than buying a seperate charger elsewhere. You will be able to find the charger manual on the US Sanyo website. If you are not in a hurry, it is better to use slow charger. Quick charger makes battery hotter while charging, hence shorter life. Thanks for the answers.
I was actually asking for the time that the charger that comes bundled with the eneloops took to charge them.
Sorry if I wasn't clear. In my opinion is a good speed, without forcing the batteries. I have found myself in a situation before where I just had a small window of time to charge my batteries camping trip. If the KD used proprietary batteries I wouldn't care that much on getting extras I have 3 batteries for my Panasonic , but carrying 12 or 16 AA's everywhere is a bit annoying.
So I'd prefer to go for 2 sets of four and a faster charger. I'm a little wary of the 15min chargers, but 2h sounds more reasonable. Actually, the eneloops are sold in bundles with a few slightly different chargers. So you can only be sure if you read the manual of the specific charger. The one I have is a slow charger. OTOH, it is a smart charger with 4 independent charging circuit, and it also plugs directly into the wall without the need for adapters, so it is convenient to carry.
The quick charger which I recommend and own, can handle any of AA from 1 to 4. My mha eneloops takes many more shots and flashes over a much longer period than any of my other nimh rechargeables - some of which are rated mha. When I charge eneloops they take ages on a uniross photo batter charger with two channels around 12 hours compared to around 4 hours with the other batts.
They also get very hot. I guess the eneloops take longer to charge than the others because they are more flat after delivering up energy for so much longer. I doubt that's the case as I didn't notice they took longer to charge than regular Sanyo If your charger takes 12 hours and very hot, better look for another charger. I'm with Alan on this. That temperature rise is no good. You probably have a charger that misses the point where the batteries are full, continue to charge them and builds up heat while overcharging.
As I said above: there is no time or method difference for charging Eneloops compared to charge other NiMH batteries. Agree, and one additional point: it could be very well that your Eneloops are the only ones that are completely empty before recharging. Other rechargeables seem to be empty e.
So that could explain part of the difference too. If you buy another charger, buy one with 4 independant circuits, one that charges individually. Very very important. Look for "charges 1,2,3 or 4 batteries at a time" instead of "charges 2 or Thats interesting the charger has looked after me for a few years now, the diodes turn from red to green when charging is complete and I guess that at that point charging will cease. Joking aside, you can do a refresh with the built-in Refresh function on some Panasonic and Sanyo Eneloop chargers.
And you could do a refresh on a more advanced charger by setting the mA. Want to know what a refresh means? Check out the explanation in the advanced section. It is recommended to set a refresh at between mA for charging and discharge rate for regular white AA Eneloops. So better set the charge rate at max, in this case, mA. But don't go over mAh for AA Eneloops. Can I refresh Eneloops if I don't have a charger with a refresh option?
Just charge them up with the charger you have, and put them in an old-fashioned flashlight with an incandescent bulb, run it until they're completely dead, then charge them up again. List of all Eneloops produced between and today. This means the charge will take 1 hour to charge the battery. If you see a.
Another way to remember it is to say, 0. This is a charge termination method that detects a full battery when the Voltage of the battery drops within a certain time during the charge. Delta can be translated as a Change. So if the charger senses a change in voltage so that the Voltage drops which means negative within X amount of time it will notice the battery is fully charged.
See this graph that HKJ made and look at the Red line. Just before it stops charging you can see it going down. The problem with low C charge rates is that the Voltage drop is difficult to measure. Therefore it is better to use a. Also notice that the black line, temperature rises at the same time, they go hand in hand.
When a battery is depleted the Voltage is lower than when fully charged. When you charge a battery, the Voltage will rise over time.
But at a certain Voltage, the battery stops increasing its Voltage, and therefore the charger could determine to stop charging. The 0 dV refers to 0 Voltage difference at x amount of time. A charger like the Lacrosse BC probably uses this termination, especially at a lower current. This is still not a recommended termination for NiMH. This algorithm will charge a battery with a constant current that stays until the Constant Voltage is reached.
This is used with charging Lithium-Ion batteries for example, so Panasonic NiMH chargers do not have this charge algorithm. Take a look at the following graph by HKJ. Although constant current is used often for a longer period, they usually slow down when the battery is almost full. Trickle charge is usually referred to as keeping a battery on the charger at a very low charge current.
This is meant to keep the battery as full as possible over an extended period of time. It might even be the wrong terminology as it is a fairly high Trickle charge and sometimes people call it a top-off charge. The BQ-CC17 on the other hand does not use this topping off. Likely because it uses a lower current, to begin with.
No, this has nothing to do with burglars nor with your breakfast. But a Break-In for batteries is referred to as maximizing the performance or capacity of a battery. This should only be used with an empty battery The charger will charge for 16 hours 0. Only with an empty battery! My advice would be to not use the Break-In mode too often with Eneloops, especially not with Eneloop Pro. New Eneloop batteries need a few cycles to get to max capacity This is also written in each battery product specifications.
This function can be found on many more advanced battery chargers like the ones on the Advanced Charger page. With a Refresh mode the charger will charge, discharge and then do a final charge to complete the cycle. This will normally boost the capacity back to its max capacity. You can use this method with all NiMH batteries, not just Eneloops.
BTW you can repeat this Refresh mode if you're not satisfied with the results of the 1st Refresh cycle. Some advanced chargers will continue this cycle until the max capacity is reached. So the continuation of the process may depend on the charger. An Analyze mode does basically the same thing as it will Analyze the capacity of a battery by charging, discharging, and charging it up again. At the end of this process, it will show the discharge capacity. When you want to know the capacity, or when you want to give them a little boost.
It can be very useful to match batteries for multi-cell applications. This is a common problem when using batteries in a multi-battery application. Say for example a flashlight that uses 4 AA batteries in series. It is therefore always advised to use sets of batteries always together, and the eneloop limited editions will greatly help to keep track of your sets.
This is rather technical. Battery cycle testing is done in sets of 50 cycles , with the following requirements:. Cycle 1: charge at 0. Start discharge directly after the charge has finished, without a break at 0. Cycle charge at 0. Start discharge directly after the charge has finished, without a break to 1.
Rest for hours. And discharge at 0. After the Discharge of every 50th cycle, it is allowed to stop the cycle test until a later time before continuing with the 51st cycle.
This is also allowed at the th, th, th, th, etc. When the duration of the 50th discharge cycle becomes less than 3 hours, the discharge test has to be redone according to the specification of the 50th cycle.
When both of these cycles have a smaller discharge duration of 3 hours the test is considered complete. See the picture above. In the Advanced section at the bottom of this page, I explain what the C-rate means. Well, you can compare 0. Eneloop batteries are one of the best rechargeable batteries in the world. You can buy them in the following countries:. Basic charge information for Eneloop batteries. The time it takes to recharge your Eneloop batteries can depend on the charger you are using.
It also depends on the capacity and size of the batteries and how many batteries you are charging at once. You can check the charging times of each of our chargers on the individual product pages. It will also be included in the instruction manual. You will often see the abbreviations mA and mAh when shopping for batteries.
This can help you decide on the right batteries for your needs. The higher the mA, the faster the batteries may charge. Eneloop batteries have been designed with sustainability in mind. Standard Eneloop batteries can be recharged up to times, but this number may vary depending on how the batteries are used. Battery life can decrease slightly over time. Take a look at the full Eneloop range on our website, or get in touch if you have any other questions!
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