Tests on the storage capacities of
NiMH rechargeable batteries

Tested Jan/Feb 2009

AAA Cells

Capacities of NiMH cells
Capacity Claimed Percentage Brand Diameter* Notes  
939mAh 1000mAh 94% Duracell Supreme 10.20mm New
899mAh 1100mAh 82% Vapex 1100   New
840mAh 1000mAh 84% Sinica 10.07mm Well-used
800mAh 1000mAh 80% BTY 9.98mm Well-used
737mAh 1000mAh 74% Vapex 1000   New
606mAh 800mAh 76% Vapextech 10.01mm Well-used

 

AA Cells

Capacities of NiMH cells
Capacity Claimed Percentage Brand Diameter* Notes  
2460mAh 2650mAh 93% Duracell 14.06mm New
2130mAh 2800mAh 76% Fujicell 14.08mm New
1700mAh 2400mAh 71% Vapextech 14.04mm Well-used
1688mAh 2300mAh 73% Powerman 14.08mm Well-used
1580mAh 3000mAh 53% Maxuss 13.85mm New
450mAh 2500mAh 18% BTY 13.94mm New
450mAh 2600mAh 17% "Green" * 13.85mm New

* Unbranded
*I guessed these targeted 10mm and 14mm, but I was wrong



Low self-discharge batteries

AAA Cells with low self-discharge

These have lower capacities, but lose less of this stored energy during storage or standby

Capacities of low-self-discharge NiMH cells
Capacity Claimed Percentage Brand Diameter* Notes  
785mAh 850mAh 92% Vapex Instant 10.09mm New


AA Cells with low self-discharge

These have lower capacities, but lose less of this stored energy during storage or standby

Capacities of low-self-discharge NiMH cells
Capacity Claimed Percentage Brand Diameter* Notes  
1977mAh 2100mAh 94% Vapex Instant 14.10mm New
1911mAh 2000mAh 96% Sanyo Eneloop 13.98mm New
  2000mAh   Duracell Active Charge      

  for more information on low self-discharge batteries


 

to see how tests were done plus some extra information.

to see all individual test results

to see my conclusions