12V 540Ah Polar bottom seat

540Ah LiFePO4 12.8V Polar battery with Smart double BMS, Bluetooth app, 5A active balancer and heater

540Ah BullTron Underseat Polar | Maximum power under the seat (double DIN size).
They replace up to 1080Ah lead/AGM/GEL batteries (identical dimensions as 2x 95Ah lead/AGM/GEL battery with 6-fold usable capacity) for use at temperatures from -30°C to 60°C.

Installation is very simple: old battery out, new battery in, done. BMS, Bluetooth, active balancer and heating - this lithium battery contains everything you need. As a rule, existing chargers can be retained. If desired, a second battery can be added and connected in parallel.
8 reasons to choose a lithium battery from BullTron

• Developed and assembled in Germany. BullTron is a German manufacturer, so service and repairs are also carried out in Germany.
• With over 6,000 cycles (at 80% DOD), you will enjoy this lithium battery for a very long time.
• Super compact. Like all BullTron LiFePO4 batteries, the 200Ah variant is also extremely small and therefore fits into the seat console of Ducato, Bulli and Co. as well as in intermediate floors.
• Integrated powerful heater with the highest possible effectiveness and efficiency (extremely fast and completely uniform heating of all cells) The integrated heater starts at temperatures below 0°C when a charging current is applied. No battery discharge due to the integrated heater.
• Extremely light. At only 19.5kg, this battery is up to 84% lighter than a 400Ah lead-acid battery (same usable capacity). Weight saving = 99kg
• 1-day service (battery problems are rectified in-house within 1 day)
• 5 year German manufacturer's warranty.
• New, lighter, maintenance-friendly technology. The bolted housing can be opened, all cables and control units are bolted - this promises quick, easy and cost-effective repairs, even well beyond the warranty period.

Optimal lead-acid battery replacement with up to 10 times the service life
BullTron LifePO4 batteries are an optimal lead-acid battery replacement with all the advantages of lithium iron phosphate batteries.
They offer a weight reduction of up to 85%, high energy reserves and stable voltage even under extreme loads.
The batteries have been specially developed to achieve an optimum ratio of size, weight, performance and service life.
An extremely long service life is guaranteed even with regular deep discharges (3500 cycles at 100% DOD/discharge depth or 6000 cycles at 80% DOD/discharge depth) thanks to the latest lithium technology, making BullTron® batteries the optimum supply battery.

The battery is suitable for 12V-48V systems.

- Parallel connection 12V is possible (increase in capacity)
- Series connection 24V, 36V, 48V is also possible

Advantages of BullTron batteries
- assembly & installation in Germany
- 5-year German manufacturer's warranty
- service, maintenance and repair in Germany (within 1 day)
- screwed housing (can be opened)
- all cables and electronic components replaceable (screwed)
- use of high-quality & long-lasting components durable components
- 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 480Ah suitable for under-seat mounting
- automatic battery shutdown in the event of a short circuit

Safest lithium technology (LiFePO4)
BullTron batteries use lithium iron phosphate technology (LiFePO4), currently the safest lithium technology on the market. All batteries consist of powerful and very durable (LiFePo4) cells and an integrated battery management system (BMS). The BMS permanently protects the individual cells and the entire battery against over/under voltage, over/under temperature, overload and short circuit (automatic shutdown without damage).
The BMS effectively prevents premature battery failure due to external influences or incorrect use.