Capacity and self-discharge of batteries «EagleTac 2500» - detailed results

Battery photo


Brand / modelEagleTac 2500
Price9.20 €
Alternative packagings
Date of manufactureN/A
Condition (age)Tested item is brand new
Unit weight50 gr.
Discharge (1-hour rest)3.84 V
2520 ±1% mAh (≅9.67 W·h)
Discharge (5-day rest)3.84 V
2460 ±1% mAh (≅9.43 W·h)
~3% self-discharge
Discharge (1-month rest)3.83 V
2380 ±1% mAh (≅9.13 W·h)
~5% self-discharge
Date of measurementAug 2013


I bought this 18650-sized cell for a bike flashlight. This is the lowest capacity that EagleTac offers in this form factor. The performance matches the advertised capacity perfectly: it's got a bit more than 2500 mAh an hour after a full charge, diminishing to 2380 mAh a month later. The cell weighs 50 grams, which makes it a member of the "good" camp (EagleTac 3400 weighs 54g, which apparently exlplains the higher capacity).

Test results

Test chart

Capacity test immediately after unpackaging (i.e., the factory charge):
Unpacking test

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