MonoLith 12.8V 690Ah

1. Safety Precautions

General Operating Guidelines

• Ensure the battery is securely mounted in a dry, ventilated area.
• Operate and charge within the permitted temperature ranges: 0°C to 60°C for charging, and -20°C to 60°C for discharging.
• Avoid mounting the battery in high-temperature engine bays.

2. Description

The PowerPaul MonoLith 12.8V 690Ah

The MonoLith 12.8V 690Ah is PowerPaul® Australia's highest-capacity 12V lithium battery. It delivers massive, long-lasting energy storage (approx. 8,832Wh) from a single unit, designed for caravans, RVs, motorhomes, marine vessels, and off-grid power systems.

Key Technical Features

• REPT ESS-Grade Cells: Built using premium, high-density cells that offer superior energy density, consistent power output, and an extended lifespan.
• 300A BMS with Bluetooth: Features a high-draw 300A JK BMS providing complete protection against over/under voltage, over-current, and temperature faults. Monitor status via iOS and Android apps.
• 2A Active Balancing: Integrated active balancer works continuously to keep cells balanced during charge and discharge states, optimizing battery health.
• Power Button Shutdown: Integrated physical button to manually wake or shut down the BMS for servicing, maintenance, or long-term storage.
• Dual Output Terminals: Supplied with two sets of positive and negative connections utilizing waterproof Amphenol-type connectors to spread heavy current loads or facilitate parallel daisy-chain wiring.
• Standard Venting Option: Fittings for venting or sealing are supplied to assist with compliance to Australian Standards (AS/NZS 3001.2).

3. Specifications

4. Installation & Wiring

4.1 Mounting and Orientation

• Flexible Mounting: Can be mounted upright on its base, laid flat under a bed or bench seat, or mounted upright against a wall.
• Chassis Mounting: Suitable for mounting under a caravan attached to the chassis rails (custom fabricated mounts/cradles required).
• Venting Compliance: Use the supplied venting fittings to run a vent line to the exterior of the vehicle, complying with Australian installation standards.
• Ensure the battery is securely strapped and protected against road debris, direct spray, and excessive heat.

4.2 Connecting in Parallel

• Parallel connection of up to 4 identical MonoLith batteries is supported to expand energy storage.
• Series connection is strictly banned. Do not exceed 12V nominal configuration.
• Ensure all batteries are fully charged and matched in voltage (within 0.1V) before making parallel connections.
• Use cables of equal length and cross-section to link parallel units to ensure even charge and discharge distribution.

4.3 Dual Terminals & Wiring

• The battery features 2 sets of positive and negative terminal connections.
• Use both sets of terminals to spread high current loads (e.g. connecting a large 3000W inverter) or to easily daisy-chain multiple batteries in parallel.
• Only use the supplied waterproof Amphenol type crimp connectors and torque properly to prevent high-resistance joints.

5. Troubleshooting & Support

BMS Bluetooth Diagnostics

Download the JK BMS companion app on iOS or Android to read status:

• Verify cell voltages are balanced (should be within 0.05V of each other).
• Check for active BMS alarms such as over-temperature cutoff, low-voltage protection, or short-circuit errors.

BMS Power Button Reset

• Power Off: Press the power button to isolate the battery terminals for servicing or long term storage.
• Wake / Reset: Press and hold the power button to wake the BMS from sleep or to reset alarm codes after a fault has been resolved.

Common Troubleshooting Steps