Polarity Lithium 12V 100Ah Bluetooth Lithium LiFePO4 Leisure Battery - 1280Wh

Compact, lightweight and built for reliable off-grid power, the Polarity Lithium 12V 100Ah Bluetooth Leisure Battery is the perfect power solution for camper vans, motorhomes, caravans, boats and off-grid electrical systems.

Combining high-quality Grade A EVE lithium iron phosphate (LiFePO4) cells, an advanced JBD Battery Management System (BMS) and integrated Bluetooth monitoring, this powerful 100Ah lithium leisure battery delivers outstanding performance, excellent efficiency and a long service life.

With a usable energy capacity of up to 1280Wh, a continuous charge and discharge capability of 100A and a lightweight design weighing just 9.2kg, the Polarity Lithium 100Ah battery is an excellent upgrade from traditional lead-acid or AGM leisure batteries.

Many lithium battery companies like to highlight that their products undergo rigorous shipment tests, vibration tests, and quality checks. While this sounds impressive, it’s actually nothing extraordinary — these are simply mandatory requirements for any lithium battery entering the market.

Polarity Lithium believe that meeting the bare minimum is not enough. That’s why, in addition to all the standard certifications and reports — CE, UKCA, RoHS, MSDS, and UN38.3 — they take the extra step of submitting the fully assembled battery for testing under the International standard IEC 62619.

This internationally recognised standard sets out stringent safety requirements for lithium cells and batteries. It goes beyond basic compliance, ensuring our products meet higher thresholds of safety and reliability.

But they don’t stop there. Once the IEC 62619 testing is complete, their batteries are then issued with a CB certification by Bureau Veritas — one of the world’s leading independent testing and certification bodies. This added layer of third-party verification means their customers can have confidence that their batteries aren’t just compliant — they’re proven to perform even under demanding real-world conditions.

FEATURES

100Ah / 1280Wh Capacity – Reliable 12.8V lithium power for camper van electrics, lighting, fridges, water pumps, inverters and other 12V equipment.

Premium EVE LiFePO4 Cells – Manufactured using high-quality EVE LF100LA lithium iron phosphate cells, offering excellent energy efficiency, stability and long-term performance.

Integrated Bluetooth Monitoring – Connect directly to your battery using the Polarity Lithium app to monitor its performance and condition from your smartphone.

Advanced JBD Battery Management System – Intelligent built-in BMS continuously monitors and protects the battery against potentially damaging operating conditions.

100A Continuous Charge & Discharge – Capable of handling demanding electrical systems with up to 100A charging and 100A discharging (Recommended charge 20-50% capacity)

Long Service Life – Designed to provide 10+ years of reliable service with correct charging, use and maintenance.

Lightweight & Compact Design – Weighing only 9.2kg, this lithium battery offers impressive energy storage without the weight and bulk of traditional lead-acid alternatives.

Flexible Battery Expansion – Supports connecting up to four compatible batteries in parallel or up to four in series, allowing you to expand your system's capacity or voltage.

POLARITY LITHIUM APP

Take control of your battery with the dedicated Polarity Lithium Bluetooth app, available for compatible iOS and Android devices.

Thanks to its integrated Bluetooth connectivity, you can conveniently monitor your battery from your smartphone without requiring a separate battery monitor or additional wiring.

The app provides useful real-time battery information, including:

• Battery state of charge (SOC)
• Remaining battery capacity
• Battery voltage
• Charging and discharging current
• Individual cell voltages
• Battery temperature
• Charge and discharge cycle information
• BMS protection and status information

JBD BATTERY MANAGEMENT

At the heart of the Polarity Lithium 100Ah battery is a sophisticated JBD Battery Management System, designed to optimise battery performance and deliver comprehensive protection.

The BMS constantly monitors key operating parameters and helps protect the battery against:

• Overcharging
• Over-discharging
• Excessive charging current
• Excessive discharging current
• Short circuits
• High-temperature conditions
• Low-temperature charging
• Cell voltage irregularities

This intelligent protection helps safeguard the internal lithium cells and connected electrical equipment, contributing to a safer and longer-lasting battery system.

TECHNICAL SPECIFICATIONS

Battery Cell Specifications

• Battery Chemistry: Lithium Iron Phosphate (LiFePO4)
• Cell Manufacturer: EVE
• Cell Model: EVE LF100LA
• Cell Configuration: 4S1P
• Nominal Voltage: 12.8V
• Rated Capacity: 100Ah
• Energy Capacity: 1280Wh
• Charging Voltage: 14.6V
• Discharge Cut-Off Voltage: 10V
• Internal Resistance: ≤10mΩ

Battery Management System (BMS)

• BMS Manufacturer: JBD
• Maximum Charging Current: 100A
• Maximum Discharging Current: 100A
• Recommended Charging Current: 20–50A
• Recommended Discharging Current: 20–50A
• Communication: Bluetooth
• Monitoring App: Polarity Lithium
• Charging Temperature Range: 0°C to +55°C
• Discharging Temperature Range: -20°C to +55°C
• Maximum Parallel Connections: 4 batteries
• Maximum Series Connections: 4 batteries

Physical Specifications

• Dimensions: 229mm (L) × 144mm (W) × 212mm (H)
• Weight: 9.2kg
• Terminal Type: M6 Bolt-Down
• Case Material: ABS Plastic
• Ingress Protection Rating: IP67

Compliance & Certifications

• CE
• UKCA
• RoHS
• UN38.3
• IEC 62619
• CB Certification – Bureau Veritas

Important: Always use a suitable LiFePO4-compatible charger and ensure system wiring, fuses and connected equipment are correctly rated. Series and parallel battery configurations should follow the manufacturer's installation guidance.