ATEM POWER 12.8V 100Ah slimline LiFePO4 battery designed for installations where space is limited, including behind-seat and compact caravan or 4WD battery systems. It provides approximately 1,280Wh of nominal energy with a 100A continuous-discharge BMS rating.

The slim steel enclosure is about 50mm thick and includes a voltage display and twin 120A Anderson-style connectors. This is a deep-cycle house battery, not an engine-starting battery.

Key specifications

• Nominal voltage: 12.8V
• Rated capacity: 100Ah
• Nominal energy: approximately 1,280Wh
• Maximum charge current: 50A
• Maximum continuous discharge current at 25°C: 100A
• Pulse discharge current: 200A for up to 7 seconds
• Maximum configuration: 2 in series or 2 in parallel
• Internal impedance: ≤10mΩ
• Self-discharge: 2% per month
• Case: SPCC steel
• Approximate battery weight: 16.5kg
• Package dimensions: 680 × 375 × 135mm
• Gross packaged weight: 18.35kg
• Supplier-listed cycle life: up to 2,000 cycles

Slimline installation advantages

The narrow profile can suit spaces that cannot accommodate a conventional battery case. Measure the available space and allow room for terminals, cables, fusing, ventilation and service access before ordering. Secure the battery against vehicle movement and vibration using an installation method suitable for its weight.

Compare other slimline lithium batteries or browse the complete LiFePO4 battery range.

Inverter and charger matching

Size continuous DC loads from the 100A continuous-discharge rating. The 200A figure applies for up to seven seconds and must not be treated as a continuous rating. Select a LiFePO4-compatible charger or MPPT solar controller within the battery's 50A maximum charge current.

Low-temperature charging: the supplied specification lists a -20°C to 70°C charge range. Charging LiFePO4 cells below 0°C can damage batteries unless appropriate low-temperature protection is confirmed. Check the current ATEM POWER manual before charging below freezing.

Installation notes

• Use correctly rated cabling, terminals, isolation and a fuse close to the battery.
• Only combine identical batteries within the stated 2S/2P limit and follow the current manufacturer procedure.
• Confirm cable and connector ratings for the intended continuous current.
• Use a charger with a suitable LiFePO4 profile.

Frequently asked questions

Will it fit behind a vehicle seat?

Its approximately 50mm slim profile is designed for compact locations, but available width, height, terminal clearance and mounting access must be measured in the actual vehicle.

Can this battery run an inverter?

Yes, if the total DC demand and start-up surge stay within the BMS limits. Browse suitable pure sine wave inverters and confirm the full system design before purchase.

Can it replace a 100Ah AGM?

It may suit many upgrades, but confirm charger settings, physical dimensions, cable and fuse ratings, and the required BMS current for your loads.