ultrarunner2015
Newly Enlightened
- Joined
- Nov 23, 2014
- Messages
- 57
I have about 30 Eneloop AA batteries; some are the older HR-3UTG and some are the newer (Panasonic) BK-3MCCA.
I believe the newer ones are rated for over 1,000 recharge cycles, while the older ones maybe just 1,000 cycles.
The oldest ones are approaching 8yrs, while the newest are 2-1/2 years old.
I can say for certain that I have not cycled any of these batteries anywhere near 1,000 times, yet the capacities are dropping to 1500 mAh on many of the oldest ones.
I have been using a Maha MHC9000 smart charger, which I use in the 'Refresh/Analyze' mode periodically to refresh and test the capacities of all of the batteries.
so, my question is: How does the manufacturer come up with the 1,000 or 2,000 recharge cycle spec? How far does capacity need to drop before a battery is considered end-of-life?
I suppose that one could continue to use these batteries until their capacity drops to half (1000 mAh) the spec, but I don't see the point. I am considering the battery at end-of-life when it reaches 1500 mAh (for the AA Eneloop).
Your thoughts?
Ultrarunner
I believe the newer ones are rated for over 1,000 recharge cycles, while the older ones maybe just 1,000 cycles.
The oldest ones are approaching 8yrs, while the newest are 2-1/2 years old.
I can say for certain that I have not cycled any of these batteries anywhere near 1,000 times, yet the capacities are dropping to 1500 mAh on many of the oldest ones.
I have been using a Maha MHC9000 smart charger, which I use in the 'Refresh/Analyze' mode periodically to refresh and test the capacities of all of the batteries.
so, my question is: How does the manufacturer come up with the 1,000 or 2,000 recharge cycle spec? How far does capacity need to drop before a battery is considered end-of-life?
I suppose that one could continue to use these batteries until their capacity drops to half (1000 mAh) the spec, but I don't see the point. I am considering the battery at end-of-life when it reaches 1500 mAh (for the AA Eneloop).
Your thoughts?
Ultrarunner