SilverFox
Flashaholic
Hello Led2011,
Eneloop cells are Ni-Mh chemistry and not Li-Ion chemistry.
Tom
Eneloop cells are Ni-Mh chemistry and not Li-Ion chemistry.
Tom
Eneloop Self Discharge study
- Thread starter SilverFox
- Start date
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eneloop (Duracell Pre-Charged) long term report (2+ years) (link)
Summary:
1 set of 4 Duracell Pre-Charged (white top made in Japan confirmed eneloop re-badges)
usage/stored idle in Pentax K100D dSLR camera for nearly 2.5 years.
(renown for being very battery fussy, please see
eneloop vs. Kodak Pre-Charged Voltage Maintenance)
After a total of 738 shots - 623 of which were in the first month after battery installation - with the camera mostly idle and only very occasional usage -
Maha C-9000 discharge at 400mA (=1/5 or 20% capacity current) -
Remaining capacity and discharge times:
472 mAh (78min)
485 mAh (81min)
461 mAh (76min)
455 mAh (76min)
This looks pretty impressive to me as it is nearly 2.5 years (2 years 4 months 24 days) since charge - and there seems to be still nearly 1/4 capacity, also after having taken 738 shots -
Extrapolating this - it means a theoretical shot count of 955 shots
(I used the lowest 455 mAh remaining capacity, and 2000mAh as the full capacity -
worst case figures).
Just to put this into context I was getting on average 1,000 shots/charge -
so having these DP-C idle for nearly 2.5 years since charge does not seem to have reduce the theoretical shot count.......
Summary:
1 set of 4 Duracell Pre-Charged (white top made in Japan confirmed eneloop re-badges)
usage/stored idle in Pentax K100D dSLR camera for nearly 2.5 years.
(renown for being very battery fussy, please see
eneloop vs. Kodak Pre-Charged Voltage Maintenance)
After a total of 738 shots - 623 of which were in the first month after battery installation - with the camera mostly idle and only very occasional usage -
Maha C-9000 discharge at 400mA (=1/5 or 20% capacity current) -
Remaining capacity and discharge times:
472 mAh (78min)
485 mAh (81min)
461 mAh (76min)
455 mAh (76min)
This looks pretty impressive to me as it is nearly 2.5 years (2 years 4 months 24 days) since charge - and there seems to be still nearly 1/4 capacity, also after having taken 738 shots -
Extrapolating this - it means a theoretical shot count of 955 shots
(I used the lowest 455 mAh remaining capacity, and 2000mAh as the full capacity -
worst case figures).
Just to put this into context I was getting on average 1,000 shots/charge -
so having these DP-C idle for nearly 2.5 years since charge does not seem to have reduce the theoretical shot count.......
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