For off-grid and RV systems that need the most storage per inch. It holds 4 kWh in a compact case with Bluetooth monitoring.
Amazon $829.99
For solar and RV setups with modest inverters that want the cheapest 200Ah. Pick a 200A-BMS model if you run a big inverter.
- 200 Ah (2,560 Wh)Capacity
- 100 AContinuous output
- NoneCold charging
- NoBluetooth
- 5 yearsWarranty
- $0.15Price / Wh
Price checked October 22, 2026. As an Amazon Associate we earn from qualifying purchases.
- Lowest price per watt-hour in this group
- Independent test measured about 7% more capacity than rated
- 100A BMS limits it to about a 1,200W inverter, half the Redodo/LiTime 200Ah Plus rating
- No low-temperature protection or Bluetooth
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.
Independent capacity tests
Capacity measured by independent reviewers, discharging from full to the BMS cutoff. Discharge current and temperature differ between tests, so compare figures within one source.
| Tested by | Measured | Energy | Of rated | Discharge | Conditions |
|---|---|---|---|---|---|
| techtest.org | 213.9 Ah | 2,772 Wh | 107% | - | Average of 6 runs at 10 A and 20 A to a 10.8 V cutoff, ATORCH DLB-600W load (range 212.13–214.94 Ah). EU unit, 53.2 x 20.7 x 21.5 cm, about 22 kg. |
Specifications
| Model number | EF-528A14N-11 |
|---|---|
| Capacity | |
| Rated capacity | 200 Ah (2,560 Wh) |
| Tested capacity | 107% of rated |
| Nominal voltage | 12.8 V |
| Chemistry | LiFePO4 |
| Rated cycle life | 4,000 at 100% depth |
| Price per Wh | $0.15 |
| BMS | |
| Continuous discharge | 100 A |
| Max charge current | 40 A |
| Low-temperature charging | None |
| Bluetooth monitoring | No |
| Series / parallel | up to 4 in series, 4 in parallel |
| Build | |
| Dimensions | 20.94 x 8.15 x 8.5 in |
| Weight | 44 lb |
| Terminals | M8 bolt |
| Water resistance | IP65 |
| Warranty | 5 years |
Alternatives in this size
For RV and van builds that want a large, low-cost bank in one box from a known brand. Cold-climate users should look at a heated battery instead.
Amazon $593.99 Amazon $653.99For RV and van owners who camp in freezing weather and want one large, serviceable battery with a long warranty. The heater lets it charge below freezing without damage.
Amazon $749Compare
Compare the Power Queen 12V 200Ah with any other 12V lithium battery →
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