Capacity and self-discharge of batteries «Eneloop (1st gen)» - detailed results

Battery photo


Brand / modelEneloop (1st gen)
Price15.33 €
Unit price3.83 €
Alternative packagings
Date of manufacture01-2009
Condition (age)Tested items are used
Low self-discharge (LSD)Yes
Discharge (1-hour rest)5.08 V
1800 ±1% mAh (≅2.28 W·h)
Discharge (5-day rest)5.05 V
1720 ±1% mAh (≅2.16 W·h)
~4% self-discharge
Discharge (1-month rest)5.01 V
1680 ±1% mAh (≅2.11 W·h)
~6% self-discharge
Date of measurementAug 2012


These are the first generation of eneloop-branded cells from Sanyo (model id: HR-3UTG). I use them to this day, in an external flash unit of a digital camera. Bought somewhere in 2009, clocked some 20-30 cycles. In my experience they are very dependable batteries with extemely low self-discharge, which is somewhat expected due to their quite modest capacity.

Test results

Test chart

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