Capacity | 320 Ah |
---|---|
Nominal voltage | 12.8 V |
Width | 355 mm |
Height | 190 mm |
Depth | 220 mm |
Net weight | 29 kg |
Pack size | 47,5 x 34,5 x 31 cm |


- Developed, designed & assembled in Germany
- Screwed housing (can be opened)
- Use of high-quality & durable components
- All electronic components can be replaced (screwed)
- Up to 75% longer cycle life than other LiFePO4 batteries
- Up to 45% smaller and up to 35% lighter than other LiFePO4 batteries
- Battery sizes up to 540 Ah suitable for under-seat installation
- 5-year German manufacturer's warranty (10 years optional)
- Service and repair in Germany (within 1 day)
Maximum power, minimal space requirement
The BullTron 320 Ah Underseat Polar is the ideal solution for demanding applications with high energy needs – perfect for 3000 W inverters and reliable use in temperature ranges from -30 °C to +60 °C. It effortlessly replaces up to 640 Ah lead, AGM or gel batteries and offers nearly seven times the usable capacity while maintaining the same length and height as a conventional 95 Ah battery.
Powerful, compact and uncompromisingly efficient
Weighing only 29 kg, this battery is up to 85% lighter than comparable lead models. The particularly compact housing allows for space-saving installation under the seat or at other existing locations. The replacement is straightforward: old battery out, BullTron in – no additional accessories required. Existing chargers can usually be reused.
Integrated high-end technology
A modern BMS (Battery Management System), Bluetooth monitoring, an active cell balancer and a powerful heater are already integrated. The heater activates automatically at temperatures below 0 °C – only when charging current is present and without additional discharge of the battery.
Durable and maintenance-friendly
More than 6000 charge cycles at 80% depth of discharge (DOD) ensure an exceptionally long service life. The screwed housing allows for quick, easy and cost-effective repairs if needed – even outside the warranty period. The battery is designed for 12 V systems and can be connected in parallel if necessary to further increase capacity.
Technical data:
- Capacity: 320 Ah (comparable to up to 640 Ah lead/AGM/GEL)
- System voltage: 12 V
- Weight: only 29 kg
- Dimensions: identical to 95 Ah lead/AGM/GEL
- Temperature range: -30 °C to +60 °C
- Cycle durability: up to 6000 cycles at 80% DOD
- Bluetooth monitoring & BMS integrated
- Safe lithium technology (LiFePO4)
- Heater with automatic activation in cold
- 5 years manufacturer's warranty in Germany