Dakota Lithium 100Ah 12V LiFePO4 vs Epoch Marine 12V 172Ah Group 31
Dakota Lithium 100Ah 12V LiFePO4 (100Ah) vs Epoch Marine 12V 172Ah Group 31 (172Ah) compared spec-by-spec. Cycle life, BMS, pricing, pros, cons, and our verdict on which off-grid battery to buy.
| Specification | A — dakota-lithium Dakota Lithium 100Ah 12V LiFePO4 8.6/10 $750 Check Price on Dakota Lithium $849
Save $99 | B — epoch Epoch Marine 12V 172Ah Group 31 8.3/10 $899
Price unavailable
|
|---|---|---|
| Capacity Ah | 100 | 172 |
| Voltage | 12 | 12 |
| Energy Wh | 1,280 | — |
| Battery Type | LiFePO4 | LiFePO4 |
| Cycle Life | 2,000 cycles | — |
| Weight | 30 lbs | — |
| Dimensions | 12.8 x 6.9 x 8.4 in | — |
| Bms Included | Yes | — |
| Max Continuous Discharge A | 100 | — |
| Max Charge Rate A | 50 | — |
| Cold Temp Cutoff | 20F (-7C) | — |
| Operating Temp | -20-135F | — |
| Series Parallel | Yes | — |
| Bluetooth Monitoring | No | — |
| Ip Rating | N/A | — |
| Warranty | 11 years | — |
| Group Size | — | Group 31 |
Buy the Dakota Lithium 100Ah 12V LiFePO4
Best prices · Updated hourly
Buy the Epoch Marine 12V 172Ah Group 31
Best prices · Updated hourly
Who Should Buy the Dakota Lithium 100Ah 12V LiFePO4?
The Dakota Lithium 100Ah 12V LiFePO4 is built for cold weather use, marine trolling, hunting fishing. Its 100Ah at 12V gives you 1.2kWh of usable energy — suitable for a standalone house battery or small bank.
Key advantages include: industry-best 11-year warranty; excellent cold-weather performance down to -20f discharge; lightest 100ah option at 30 lbs. At 30 lbs, it's manageable for a one-person install.
Priced at $750, the Dakota Lithium 100Ah 12V LiFePO4 scores 8.6/10 overall — a strong showing across the board.
Who Should Buy the Epoch Marine 12V 172Ah Group 31?
The Epoch Marine 12V 172Ah Group 31 is built for marine, trolling motor. Its 172Ah at 12V gives you 2.1kWh of usable energy — suitable for a standalone house battery or small bank.
Key advantages include: group 31 case drops into standard marine battery trays; 172ah at 12v for trolling motors and marine house loads; purpose-built marine sku from epoch's 2026 lineup.
Priced at $899, the Epoch Marine 12V 172Ah Group 31 scores 8.3/10 overall — a strong showing across the board.
How Do the Specs Compare?
Capacity: The Epoch Marine 12V 172Ah Group 31 offers more amp-hours at 172Ah vs 100Ah for the Dakota Lithium 100Ah 12V LiFePO4. More Ah means more runtime before hitting the safe depth-of-discharge floor — critical for overnight draws and cloudy multi-day stretches.
Chemistry: Both batteries use LiFePO4 chemistry, so cycle life and thermal stability are in the same ballpark — the specs and price become the main differentiators.
Price: The Dakota Lithium 100Ah 12V LiFePO4 costs $750 versus $899 for the Epoch Marine 12V 172Ah Group 31 — a $149 difference. For long-term value, divide the price by the rated cycle life to get a true cost-per-cycle comparison.
🏆 Our Verdict
Choose the Dakota Lithium 100Ah 12V LiFePO4 if you need a more portable solution at 30 lbs and strong performance for its class.
Choose the Epoch Marine 12V 172Ah Group 31 if you prioritize premium features and build quality .
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