Surkibat 20V Battery, 7.5Ah Li-ion Compatible with Dewalt
Tier Fby Surkibat
This pack will start smoking under normal operation. Bad engineering. Do not buy.
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Actual capacity 3.1Ah. Massively overstated.
Decent built quality, except for the fact that it catches on fire when you use it.
3.1Ah measured, averaging 1550 mAh/cell. Extremely poor.
Performed middle/bottom of the tiers on the performance and failure tests.
Pack design has a structural flaw -- fire hazard even under normal use.
Testing Statistics
Cell notes
Unbranded cells, potentially reclaimed.
Cycling Test
We cycle the batteries at high-power (800W for 20s on, then 20W for 6s off) to reflect their actual usage in high-load scenarios like circular saw use.
Capacity Test
We measure the amount of usable energy the pack supplies from 100% to 0% charge.
Pack Internal Resistance Test
Failure Test
The battery is stepped through 30s at increasing current levels, ignoring safety features like temperature and voltage warnings, until the pack fails catastrophically.
