How many times can Eneloop rechargeable batteries be recharged?
I believe they can, but under certain conditions. This includes a predefined amount of current for charging and discharging, an ambient temperature of X degrees, and a certain amount of rest within their amount of charge and discharge cycles.
I also believe that they can be charged more than 2100 times. It really depends on how you charge them, and how much you discharge them and at what current.
So that means that my Eneloop batteries can`t be charged 2100 times?
Hmm, most likely you won`t be able to do this. No need to feel upset. Imagine you would charge them twice every week for “just” 1000 times. We are then looking at 104 cycles in a year. In order to get 1000 cycles, you would be using those batteries for over 9 years. I believe that is quite a long time. Imagine how much environmental damage you would have saved by not using Alkaline batteries.
2100 cycles is just a marketing lie?
No, definitely not. It is according IEC and JIS testing specifications. A friend of mine, Viking (a member of the CPF forum) has helped me to understand these testings. The Japanese JIS 8708 Panasonic now uses is the same as the IEC 61951-2.
Sanyo and Panasonic didn’t make up some lousy numbers. They tested them according to these standards. The cycles are counted until there is 60% capacity left from the original capacity when the test stops. See the graph for the 2nd generation Eneloops that explains this a little.
More questions about charging (Eneloop) batteries
+ Is slow charging better than fast charging for Eneloops?
+ What do mA and mAh stand for? And what’s the difference?
+ How many times can Eneloop rechargeable batteries be recharged?
+ Do Eneloop batteries need a special charger?
+ How long do Eneloop batteries hold a charge?
+ What is the recommended charge current for Eneloops?
+ What’s the best Eneloop charger?
+ Eneloop Voltage – what’s the deal
+ Can you overcharge Eneloop batteries?
+ What is the maximum charge voltage for Eneloops?
+ Do I need to charge my new Eneloop batteries before I start using them?
+ Should I discharge my Eneloops completely before charging them?
+ How long does it take for Eneloop to charge?
+ How do I need to Refresh my Eneloops?
+ Can I refresh Eneloops if I don’t have a charger with a refresh option?
+ How many years do Eneloops last?
Advanced Eneloop charging info
+ What is -dV/dt charging? (termination)
+ What is 0 dV/dt termination?
+ How are Eneloops tested to claim a 2100 cycle life? (IEC 61951/ JIS 8708)
+ Non-charge related questions can be found in the Eneloop FAQ