Lithium Steppe
VANON Replacement for Dewalt 20V Max Battery, 20V 5Ah Replacement Battery

VANON Replacement for Dewalt 20V Max Battery, 20V 5Ah Replacement Battery

Tier C

by VANON

Test published July 2026

$28.00

Almost certainly the same manufacturer as CEENR, meaning the same design and poor electrical construction. Though the cells used are genuine and power-tool grade, skip these packs due to their poor electrical construction.

View on Amazon →

Ratings

Honesty
4.7 / 5

Actual capacity is 4.86 Ah, vs 5 Ah advertised.

Durability
2.2 / 5

Cheap wire harness heats up and melts the pack, and the thermistor did not kick in to shut it down.

Capacity
4 / 5

4.86 Ah capacity.

Power
5 / 5

Pack came with high-quality, cleanly-branded cells that performed well, but the pack overheats and melts with heavy use.

Safety
2 / 5

Crappy wiring harness plus very performant cells is not a good combination, since the cell-thermistor will not shut the tool down even when the top of the pack is overheating and melting.

Testing Statistics

Stated capacity5 Ah (90 Wh @ 18 V)
Measured capacity5.0 Ah (89.4 Wh @ 18 V)
Pack internal resistance51.4 mOhm
High-power cycles survived15
Peak sustained power1107 W
Energy delivered (failure test)57.7 Wh

Cell notes

LG Energy Solution INR18650H26A, rated 20 A max continuous discharge, 2600 mAh capacity. Date code identified them as 4 year-old stock, but still a high-performing cell.

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.

Cycles survived: 15 | Failure mode: Battery hit low voltage

Capacity Test

We measure the amount of usable energy the pack supplies from 100% to 0% charge.

Capacity: 89.4 Wh (99% of stated 5 Ah @ 18V Nominal)

Pack Internal Resistance Test

Pack Resistance: 51.4 mOhm (average value of pack resistance between 17.5 and 18.5 V)

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.

Energy discharged: 57.7 Wh, Peak power: 1107 W

Teardown Photos

Suggest a battery to test: