The 12V 250Ah LiFePO4 Battery is a 3,200 watt-hour block with a 200-amp continuous rating, on M8 terminals, rated IP65. It is a small-home bank for a boat-house or an off-grid cabin.
A Cabin Day
3.2 kilowatt-hours of house power
3,200 watt-hours run a small cabin through a day. The fridge, lights, water pump and electronics take their share, and the 200-amp rating feeds a 2,000-watt inverter for cooking rings, a microwave and power tools. The daily cycle stays shallow on that load. The 4,000-cycle life runs past a decade at that depth.
Off-Grid And Boat-House
Anchor and cabin
On a boat-house the block carries the domestic side at anchor without the engine. On an off-grid cabin a solar array refills it through a day of sun. A 400 to 800-watt array covers a cabin’s daily use in decent weather. Blocks parallel for a larger bank as the load grows.
Against Lead
Store and weight
Reaching 250Ah in lead takes three heavy batteries giving about 125 usable amp-hours between them at close to 70 kilograms. This one block gives the full 250 amp-hours at 26 kilograms.
Data
Datasheet
| Model | DC12-250 |
|---|---|
| Nominal voltage | 12.8V |
| Capacity | 250Ah |
| Energy | 3200Wh |
| Charge voltage | 14.6V |
| Discharge cutoff | 10V |
| Continuous discharge | 200A |
| Peak discharge | 400A (5s) |
| Cycle life | ≥4,000 cycles @80% DOD |
| Weight | ≈26 kg |
| Dimensions | 522 × 269 × 220 mm |
| Terminals | M8 |
| Operating temperature | Discharge -20~60°C / Charge 0~45°C |
| Protection rating | IP65 |
| Certification | UN38.3 / CE / FCC / RoHS |
Fit
Charging
At 14.6 volts a lithium charger or a cabin-sized LFP solar controller fills the block. It parallels into a larger bank when the resting voltages line up.
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