The cheapest way to get self-heating in a Group 31 battery, for cold-weather RV and marine use. Independent testing confirms its rated capacity.
Amazon $284.99The Power Queen 12V 100Ah Self-Heating is the better 12V lithium battery overall, rated 4.0 to 3.7. The Power Queen 12V 100Ah Self-Heating leads on value. The Epoch 12V 105Ah Essential wins on warranty. The Power Queen 12V 100Ah Self-Heating costs $264.01 less ($284.99 vs $549).
For boat and RV owners who charge below freezing and want a Group 24 battery with heating and Bluetooth built in. You pay a premium over budget brands for the heater, the app and the longer warranty.
Epoch $549Prices were last checked October 22, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Power Queen 12V 100Ah Self-Heating for value ($0.22 per rated Wh vs $0.41 per rated Wh).
- Choose the Epoch 12V 105Ah Essential for warranty (11-year warranty vs 5-year warranty).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 100 Ah class 12V lithium battery; a clear win is highlighted. How we rank explains each one.
| Factor weight | Power Queen 12V 100Ah Self-Heating | Epoch 12V 105Ah Essential |
|---|---|---|
| Overall rating | 4.0/5 | 3.7/5 |
| Value 35% | 80 $0.22 per rated Wh | 49 $0.41 per rated Wh |
| Tested capacity 15% | 100 105% of rated capacity measured (1 test) | 50 not yet independently tested (neutral score used) |
| Output 15% | 50 100 A continuous (about 1,280 W at 12.8 V) | 55 105 A continuous (about 1,340 W at 12.8 V) |
| Warranty 15% | 50 5-year warranty | 100 11-year warranty |
| Cycle life 10% | 50 cycle life not published (neutral score used) | 50 4,000 cycles, maker rating |
| Cold weather 10% | 100 self-heating, so it charges below freezing | 100 self-heating, so it charges below freezing |
Independent capacity tests
Power Queen 12V 100Ah Self-Heating
| Tested by | Measured | Energy | Of rated | Discharge | Conditions |
|---|---|---|---|---|---|
| techtest.org | 105.5 Ah | 1,368 Wh | 105% | 5 A | Self-heating version, EU unit (329 x 172 x 214 mm, 10.7 kg), discharged with an electronic load. Same test measured 105.23 Ah / 1351 Wh at 10 A and 105.57 Ah / 1321 Wh at 20 A. |
Epoch 12V 105Ah Essential
No independent test published yet.
Specifications
| Power Queen 12V 100Ah Self-Heating | Epoch 12V 105Ah Essential | |
|---|---|---|
| Capacity | ||
| Rated capacity | 100 Ah (1,280 Wh) | 105 Ah (1,344 Wh) |
| Tested capacity | 105% of rated | - |
| Nominal voltage | 12.8 V | 12.8 V |
| Chemistry | LiFePO4 | LiFePO4 |
| Rated cycle life | - | 4,000 |
| Price per Wh | $0.22 | $0.41 |
| BMS | ||
| Continuous discharge | 100 A | 105 A |
| Peak discharge | - | 200 A for 10 s |
| Max charge current | - | 100 A |
| Low-temperature charging | Self-heating | Self-heating |
| Bluetooth monitoring | - | Yes |
| Series / parallel | - | up to 4 in series, 4 in parallel |
| Build | ||
| Case size | Group 31 | Group 24 |
| Dimensions | 12.99 x 6.77 x 8.5 in | 10.25 x 6.75 x 9.00 in |
| Weight | 23.3 lb | 22.1 lb |
| Terminals | - | M8 female |
| Water resistance | - | IP54 |
| Warranty | 5 years | 11 years |
