Description
This ECO Battery 12-volt, 120 Ah lithium iron phosphate (LiFePO4) battery is built for trolling-motor runtime and house loads such as electronics, lighting and pumps. At roughly 29 lb, it takes meaningful weight out of the boat compared with a lead-acid battery of similar usable capacity. The case follows a BCI 31 footprint; confirm your tray size and terminal orientation before you buy. Bluetooth monitoring lets you check state of charge from a phone app; internal heating protects the cells while charging in freezing weather; IP67 sealing (dust-tight and rated for temporary immersion) helps it shrug off spray. Pair it with a charger that offers a LiFePO4/lithium charge profile.
Highlights
- 12 V, 120 Ah LiFePO4
- BCI 31 footprint
- 29 lb
- Bluetooth app monitoring
- Internal heating for cold charging
- IP67 rated
- Limited lifetime warranty
- Best for: Trolling Motor, House Bank
Specifications
| Brand | ECO Battery |
|---|---|
| Model / SKU | A-012120-31 (A-012120-31-HUS) |
| Nominal voltage | 12 V |
| Capacity | 120 Ah |
| Chemistry | Lithium iron phosphate (LiFePO4) |
| BCI group size | 31 |
| Dimensions (L × W × H) | 12.96 × 6.9 × 8.52 in |
| Weight | 29 lb |
| Bluetooth monitoring | Yes |
| Internal heating (cold-weather charging) | Yes |
| Ingress protection | IP67 |
| Warranty | Limited lifetime |
| Peak current | 800 A |
| Communications | Bluetooth app; CAN / NMEA 2000 |
| Low-temperature charging | Internal heating |
Specs are from the manufacturer. Check your boat’s battery compartment, terminal layout and charging system before you order.
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