Capacity and self-discharge of batteries «UltraFire 3500» - detailed results

Battery photo


Brand / modelUltraFire 3500
Alternative packagings
Date of manufactureN/A
Condition (age)Tested item is used
Unit weight33 gr.
Discharge (1-hour rest)3.91 V
990 ±1% mAh (≅3.86 W·h)
Discharge (5-day rest)3.92 V
960 ±1% mAh (≅3.74 W·h)
~3% self-discharge
Discharge (1-month rest)3.91 V
920 ±1% mAh (≅3.61 W·h)
~6% self-discharge
Date of measurementApr 2013


Thanks to Nikola Goranov for supplying this cell for testing purposes!

This battery is a part of a chinese bike flashlight. Despite the „3500 mAh“ markings, the actual capacity is no more than 1000 mAh, even though this isn't the most ridiculous lie from UltraFire :) It seems that both models of this brand weigh some mere 33 grams, which kinda explains the quantity and quality of the chemistry they contain...

Test results

Test chart

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