Capacity and self-discharge of batteries «UltroFite 4200» - detailed results

Data: Brand / model UltroFite 4200 Price N/A Alternative packagings — Origin China Store Dealextreme Date of manufacture N/A Condition (age) Tested item is brand new Unit weight 36 gr. Discharge (1-hour rest) 3.88 V 830 ±1% mAh (≅3.23 W·h)     Discharge (5-day rest) 3.88 V 820 ±1% mAh (≅3.17 W·h) ~2% self-discharge     Discharge (1-month rest) 3.88 V 810 ±1% mAh (≅3.14 W·h) ~3% self-discharge Date of measurement Dec 2013

Notes:

Yes, there's no mistake! This brand differs just two characters from UltraFire, another massively disappointing product. Chinese copying other chinese? Chinaception?

smelkomar was kind enough to give me 10 of these in order to test their manufacturing differences. Due to time constraints, I o ny managed to test a random sample of 4:

	Weight (g)	1h test (mAh)	5d test (mAh)	1mo test (mAh)
UltroFite #1	36	830	820	810
UltroFite #2	36	840	820	810
UltroFite #3	36	770	750	720
UltroFite #4	36	790	770	760

Test results

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

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