Interesting NimH behaviour...

[PlayboyJoeShmoe]

I have a stash of Energizer 2500 with red marker all over them as FAST self discharge.

I charged 4 in the Eneloop charger from Walmart and 4 in the Duracell charger also from Walmart. The ended at 1.35 from one charger and 1.41 from the other.

I ran 4 of them in my Princeton Tec 40 witha 3 cell Krypton until I THOUGHT they were dead at about 2 hours. It turns out to have been the bulb

Anyhow this was a couple days ago. The other 4 were not touched in that time.

I just tested all 8. 6 of them read 1.18 or 1.19, 1 other 1.25 and the 8th 1.07

Having used 4 of them for 2 hours I would have thought 4 would be QUITE different.

Anyhow it either shows the load was nothing for them or that the other 4 discharged like crazy.

Just REALLY seems odd that all were so close.

 

[TPA]

Probably the latter. Running a friend's set of Energizer 2500's & 2050's in my C9000 right now and it doesn't look good.

2050mAh rated:
Battery # - Measured available capacity via C9000's Break-in mode:
1- 1757mAh (85%)
2- 1784mAh (87%)

2500 rated:
3- 1579 (63%)
4- 1816 (72%)

Huge variation on the 2500's and it's safe to say they're newer batteries than the 2050mAh cells. I think the overall gist of what's been said about these batteries on this form is true -- they're crap. Energizer slapped too many thin plates together in the name of capacity and totally ignored that this will severely reduce longevity. I have a set of 4 Energizer 2500mAh AAs which I bought about 2 months ago that already are showing signs of failure, will be throwing those on the C9000 next to see.

 

[PlayboyJoeShmoe]

Well they ARE marked up with red for a reason...

It just how equal the batteries were, even though 4 had been used fairly hard.

None of them will end up doing good work.

 

[SilverFox]

Hello Palyboy,

It is not unusual for a NiMh cell that is fully discharged under load to read around 1.2 volts open circuit. I would worry about the one that read 1.07 volts.

Tom