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

- Manufacturer: VANON
- Tier: C
- Price: $28.00
- Stated capacity: 5 Ah
- Amazon listing: https://www.amazon.com/dp/B0G2C6SHF4?tag=lithiumsteppe-20
- Battery page: https://www.lithiumsteppe.com/battery/vanon_5ah

## Summary

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.

## Ratings

- **Honesty**: 4.7/5 — Actual capacity is 4.86 Ah, vs 5 Ah advertised.
- **Durability**: 2.2/5 (teardown 0.5/5, cycling 3.8/5) — Cheap wire harness heats up and melts the pack, and the thermistor did not kick in to shut it down.
  - Teardown notes: Same cheap wiring harness as CEENR packs, appear to be sourced from the same factory.
- **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.

Scoring rules: https://www.lithiumsteppe.com/methodology

## Testing statistics

- Stated capacity: 5 Ah (90 Wh @ 18 V)
- Measured capacity: 5.0 Ah (89.4 Wh @ 18 V)
- Pack internal resistance: 51.4 mOhm
- High-power cycles survived: 15
- Peak sustained power: 1107 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.

## Test data

Test procedures: https://www.lithiumsteppe.com/test-procedures

- **Pack Internal Resistance Test** (rinternal): Pack Resistance: 51.4 mOhm (average value of pack resistance between 17.5 and 18.5 V)
  - CSV: [rinternal.csv](tests/rinternal.csv)
  - Bench source file: vanon_5ah/rinternal_vanon_5ah_260707-08-17-00_t0.csv
- **Capacity Test** (capacity): Capacity: 89.4 Wh (99% of stated 5 Ah @ 18V Nominal)
  - CSV: [capacity.csv](tests/capacity.csv)
  - Bench source file: vanon_5ah/capacity_vanon_5ah_260708-07-15-00_t0.csv
- **Cycling Test** (performance): High-power cycles survived: 15. Failure mode: Battery hit low voltage
  - CSV: [performance.csv](tests/performance.csv)
  - Bench source file: vanon_5ah/performance_vanon_5ah_260709-15-28-58_t0.csv
- **Failure Test** (failure): Energy discharged: 57.7 Wh, Peak power: 1107 W
  - CSV: [failure.csv](tests/failure.csv)
  - Bench source file: vanon_5ah/failure_vanon_5ah_260713-11-47-05_t0.csv

### CSV format

1 Hz samples. Lines starting with `#` are run metadata (test profile, battery profile, instrument identity, Arduino DAQ channel labels); the first non-`#` line is the column header. Columns vary by run date — Arduino DAQ columns (tc/v/r_ntc/fault) appear on runs logged since 2026-05-11.

- `ts_unix / ts_iso` — sample timestamp (Unix seconds / ISO-8601 local time)
- `elapsed_s` — seconds since test start
- `voltage_v` — pack voltage, V (4-wire remote sense)
- `current_a` — discharge current, A
- `active_power_w` — discharge power, W
- `discharged_ah / discharged_wh` — integrated charge / energy removed
- `phase / target / cycle` — load-profile phase name, setpoint, loop count
- `tc1_C..tc4_C` — Type-K thermocouple temperatures, Celsius (nan = channel absent, disabled, or faulted)
- `v0_V` — DeWalt C3 cell-tap voltage, V
- `v1_V` — DeWalt TH thermistor-pin voltage, V
- `r_ntc_ohms` — pack NTC thermistor resistance, ohms, derived per-tick from v1_V and pack voltage (DeWalt tool thermal cutoff reference: 2140 ohms)
- `fault1..fault4` — MAX31856 status byte per thermocouple, hex (00 = healthy)

## Photos

- Headline photo: photos/headline.jpg
- Teardown 1: photos/teardown_1.jpg — Pack is melted after failure test (as expected)
- Teardown 2: photos/teardown_2.jpg — You can see where the undersized current routing wires melted diagonally across the pack
- Teardown 3: photos/teardown_3.jpg — One problem with these cheap harnesses is heat builds up at the + and - tabs of the 18650s, leading to dangerous conditions
- Teardown 4: photos/teardown_4.jpg — Would you like a side of plastic with those electrons?
- Teardown 5: photos/teardown_5.jpg — Cell label: INR18650H26A

## Files in this dataset

- `README.md` — this file
- `site.json` — the published data record for this battery (machine-readable)
- `tests/{rinternal,capacity,performance,failure}.csv` — raw bench CSVs (see CSV format above)
- `photos/` — headline + teardown photos (captions above)
- `test_procedures.md` — the four bench tests
- `ranking_methodology.md` — how ratings are scored

---

Source: Lithium Steppe (https://www.lithiumsteppe.com) — We test DeWalt-compatible power tool batteries on Amazon to guide your purchasing decisions.
Generated: 2026-07-16T19:29:38.325Z (site commit a353b4a)
Contact: https://www.lithiumsteppe.com/contact
