[ATTN: UK Members] High Capacity AAA/AA NiMH Cell Comparison Tests

[TakeTheActive]

I came across these tests today while doing a GOOGLE SEARCH for the Keywords: NiMH "Internal Resistance" charge discharge

MANY of the brand names are unfamiliar to me, but knowing the GLOBAL community that visits the CPF 'Batteries Included' Forum (at least for those members that take the time to add their LOCATION to their PROFILE ), I thought that the folks from Europe might get a kick out of them :buddies: :wave:.

BTW, seeing the names Energizer and La Crosse near the top of *ANY* list was a SHOCKER for me.

Brands (in alphabetical order):

AAA: DVD-Recordable.Org: High Capacity (GE 1000mAh) AAA NiMH Cell Comparison

1. Battech
2. BB
3. BTY
4. Duracell
5. ENCORE
6. Energizer
7. FUJICELL
8. GP
9. La Crosse
10. MAXUSS
11. palocell
12. POWERCELL
13. PROFITEXX
14. Unbranded POWER
15. Vapextech

AA: DVD-Recordable.Org: High Capacity (GE 2500mAh) AA NiMH Cell Comparison (results so far)

1. DURACELL
2. Energizer
3. EXTREME
4. FAMEART
5. FUJICELL
6. Intec
7. La Crosse
8. MAPLIN
9. Unbranded BLUE/GREY
10. UNIROSS
11. Vapextech

Looking forward to the UK discussion...

 

[PeAK]

...MANY of the brand names are unfamiliar to me...Looking forward to the UK discussion...

Nice link...I guess Canada might loosely be termed the UK. I've bought my share of no-name NiMH batteries and for the most part they suffer from poor performance in digital cameras. This is a combination of lower capacity and/or high voltage drops due to internal resistance. This seems to be especially true of high capacity NiMh cells and the UK link backs this up by showing actual capacities often being lower than 50% of the state value...an explanation:

The high leakages lead to the cells discharging below 0.9V and permanently damaging the battery. For the general population with less sophisticated chargers (i.e. no forming/discharge functions), this can only lead to a bad experience.
​

The newer LSD cells solve the issue by having much longer shelf life and statistically subjecting the battery to much less of the damaging "discharged to less than 0.9V" state than conventional batteries. Witness a test by Stefan on nine LSD batteries which all gave more than 89% (1781 mAh) of their claimed 2000 mAh rating.