3.58kWh 12.8V 280Ah LiFePO4 Battery for High Capacity Solar Backup

This high-capacity 12.8V LiFePO4 battery provides 3584Wh of nominal energy from a 280Ah configuration. It is intended for compatible solar backup and low-voltage storage systems that require more energy than standard 100Ah or 200Ah batteries.

Three Questions to Answer Before Choosing 280Ah

How many watt-hours do the loads use each day?

Calculate the average power and operating time of each load. The battery’s 3.584kWh rating represents nominal DC energy before conversion losses.

How quickly must the battery be recharged?

Charging time depends on available solar power or charger output. The battery supports up to 100A of continuous charging.

Can the inverter stay within the battery current limit?

The continuous discharge limit is 200A. The inverter’s maximum battery-side demand must remain compatible.

Capacity Difference Compared with Smaller 12V Batteries

A 280Ah battery stores 40% more nominal energy than a 200Ah battery operating at the same nominal voltage. This additional energy can extend backup duration when load and system conditions remain comparable.

The larger battery does not increase the inverter’s AC output rating. It changes the available energy reserve, while the inverter continues to determine maximum load power.

Projects should separate essential loads from optional high-consumption equipment. Heating, electric cooking and large motor loads can reduce backup time quickly even with a higher-capacity battery.

Space and Handling Review

The enclosure measures 523 × 269 × 218mm and weighs 27kg net. The supporting shelf or battery compartment should accommodate the full weight and provide access to the M8 terminals.

The shipping package measures 543 × 289 × 268mm and weighs 28.5kg gross. These figures can be used for carton planning, pallet calculations and site handling preparation.

280Ah Solar Battery Specifications

3.58kWh Battery FAQ

Is the exact capacity 3.6kWh?

The formal rating is 3584Wh, which is commonly rounded to approximately 3.58kWh or 3.6kWh.

Can it provide longer runtime than a 200Ah battery?

Yes, under comparable load, inverter and discharge conditions.

Does it include a solar charge controller?

No. Compatible charging equipment must be selected separately.

Can it be used in a sealed compartment?

The installation should provide suitable access, temperature control and protection for terminals and cables.

What load data should be supplied?

Provide average power, startup demand, daily operating hours and required backup duration.

Solar Backup Capacity Assessment