A premium 36V 50Ah for anglers who run high-thrust motors hard and fish in cold weather. Budget buyers get the same capacity for much less elsewhere.
Epoch $749The Epoch 36V 50Ah Heated rates 3.5 among 36V 24V or 36V lithium batterys; the Epoch 24V 60Ah Heated rates 3.3 among 24V ones. The Epoch 24V 60Ah Heated costs $50 less ($699 vs $749).

A premium heated 24V trolling motor battery for serious anglers who fish cold water. The price is hard to justify for fair-weather use.
Epoch $699Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
These two sit in different voltage classes (36V and 24V), and each is scored against the reference points for its own class, so a rating says how well each does among its own voltage peers. How we rank explains each factor.
| Factor weight | Epoch 36V 50Ah Heated | Epoch 24V 60Ah Heated |
|---|---|---|
| Overall rating | 3.5/5 | 3.3/5 |
| Value 35% | 27 $0.39 per rated Wh | 11 $0.46 per rated Wh |
| Tested capacity 15% | 50 not yet independently tested (neutral score used) | 50 not yet independently tested (neutral score used) |
| Output 15% | 75 100 A continuous (about 3,840 W at 38.4 V) | 37 80 A continuous (about 2,050 W at 25.6 V) |
| Warranty 15% | 100 11-year warranty | 100 11-year warranty |
| Cycle life 10% | 50 4,000 cycles, maker rating | 83 6,000 cycles, maker rating |
| Cold weather 10% | 100 self-heating, so it charges below freezing | 100 self-heating, so it charges below freezing |
Specifications
| Epoch 36V 50Ah Heated | Epoch 24V 60Ah Heated | |
|---|---|---|
| Capacity | ||
| Rated capacity | 50 Ah (1,920 Wh) | 60 Ah (1,536 Wh) |
| Nominal voltage | 38.4 V | 25.6 V |
| Chemistry | LiFePO4 | LiFePO4 |
| Rated cycle life | 4,000 | 6,000 |
| Price per Wh | $0.39 | $0.46 |
| BMS | ||
| Continuous discharge | 100 A | 80 A |
| Peak discharge | 130 A | 200 A |
| Max charge current | 50 A | 60 A |
| Low-temperature charging | Self-heating | Self-heating |
| Bluetooth monitoring | Yes | Yes |
| Series / parallel | up to 1 in series, 4 in parallel | up to 1 in series, 16 in parallel |
| Build | ||
| Case size | Group 31 | Group 27 |
| Dimensions | 13 x 6.8 x 9.44 in | 12.25 x 6.75 x 9 in |
| Weight | 35 lb | 30 lb |
| Terminals | M8 female | M8 bolts |
| Water resistance | IP65 | IP67 |
| Warranty | 11 years | 11 years |