1. Introduction
Thank you for choosing the Banshee LM12100LFP-SLIM 12V 100Ah Slim LiFePO4 Battery. This battery is designed for versatile applications, offering a compact and lightweight power solution with advanced features. This manual provides essential information for the safe and efficient installation, operation, and maintenance of your battery.
2. Safety Information
Please read and understand all safety instructions before installing or operating the battery. Failure to follow these instructions may result in serious injury, property damage, or voiding of the warranty.
- Do not short circuit: Avoid connecting the positive and negative terminals directly.
- Use appropriate charging equipment: Only use chargers designed for LiFePO4 batteries.
- Avoid extreme temperatures: Do not expose the battery to temperatures outside its specified operating range.
- Proper ventilation: Ensure adequate ventilation during charging and discharging.
- Handle with care: The battery is heavy; use proper lifting techniques.
- Keep away from children: Store the battery in a secure location inaccessible to children.
- Disposal: Dispose of the battery according to local regulations. Do not incinerate.
3. Product Features
The Banshee LM12100LFP-SLIM battery incorporates several advanced features for optimal performance and user convenience:
- Super Slim Design: With a thickness of only 2.26 inches, this battery is compact and lightweight, allowing for installation in space-limited applications.
- Versatile Connectivity: Equipped with twin 50A and 120A Anderson Style Connectors, plus M8 Insert Terminals, for flexible connection options.
- Integrated LCD Screen: A built-in LCD provides real-time readings of the battery's State Of Charge (SOC), voltage, current, and temperature.
- Bluetooth Monitoring: Download the "Banshee Battery" App to any Bluetooth-compatible device for in-depth battery health information and monitoring.
- Advanced Battery Management System (BMS): The internal BMS protects against overcharging, over-discharging, short circuits, over-temperature, over-power, and over-voltage, ensuring safe and reliable operation.
- Fast Charging: Capable of being fully charged in approximately 2 hours.
- Extended Cycle Life: Rated for 2,000-5,000 cycles, offering a significantly longer lifespan compared to standard lead-acid batteries.
- Durable Construction: Features a fully metal casing for enhanced protection and longevity.
- Flexible Mounting: Can be securely mounted using up to 6 bolts, including wall-mount options.
4. Setup and Installation
Proper installation is crucial for the performance and safety of your Banshee battery.
4.1 Unpacking and Inspection
Carefully remove the battery from its packaging. Inspect for any visible damage. If damage is found, contact your vendor immediately.
4.2 Mounting the Battery
The slim design allows for versatile mounting. The battery can be secured using up to 6 bolts. Common mounting locations include behind or under seats, or as a wall-mounted unit. Ensure the mounting surface is stable and can support the battery's weight (approximately 32.8 pounds / 14.88 kg).

Image: The Banshee Slim Battery securely mounted in a vehicle, demonstrating its versatile installation options behind or under seats, or as a wall-mount.
4.3 Connecting Terminals
The battery features twin Anderson Style Connectors (50A and 120A) and M8 Insert Terminals. Select the appropriate connectors for your application. Ensure all connections are tight and secure to prevent arcing and ensure optimal power transfer. Wires for connection are not included with the battery.

Image: A detailed view of the Banshee Slim Battery's front panel, highlighting the twin 50A and 120A Anderson Style Connectors and the M8 Insert Terminals. Dust covers protect the Anderson terminals.
4.4 Initial Charge
It is recommended to fully charge the battery before its first use. Use a compatible LiFePO4 charger. The battery can be fully charged in approximately 2 hours.
5. Operating Instructions
Your Banshee battery is designed for ease of use with integrated monitoring features.
5.1 Using the Built-in LCD Screen
The integrated LCD screen provides immediate feedback on the battery's status. It displays:
- Voltage (VOL): Current battery voltage.
- Current (CUR): Current flowing into or out of the battery.
- Temperature (TEMP): Internal battery temperature.
- State Of Charge (SOC): Percentage of remaining battery capacity.

Image: A close-up of the Banshee Slim Battery's built-in LCD screen, displaying voltage, current, temperature, and State Of Charge (SOC).
5.2 Using the Banshee Battery App (Bluetooth)
For more detailed battery health information, download the "Banshee Battery" App from your device's app store. Your mobile phone or tablet must support Bluetooth 4.0 BLE (Bluetooth Low Energy). The app can display:
- Voltage, Current, State Of Charge (SOC)
- Number of Cycles
- Temperature
- Charge or Discharge Status
- Single cell voltage
- Communication frequency
- Serial Number

Image: A smartphone displaying the "Banshee Battery" App interface, showing detailed battery health information including SOC, cell voltage, temperature, and capacity. The mobile device is not included.
6. Maintenance
The Banshee LiFePO4 battery requires minimal maintenance due to its robust design and integrated BMS. However, following these guidelines will ensure optimal performance and longevity:
- Regular Inspection: Periodically check the battery terminals for corrosion or loose connections. Clean terminals if necessary.
- Keep Clean: Wipe the battery casing with a dry cloth to remove dust and debris. Do not use harsh chemicals or abrasive cleaners.
- Storage: If storing the battery for an extended period, ensure it is charged to approximately 50-70% SOC. Store in a cool, dry place, away from direct sunlight and extreme temperatures.
- Avoid Deep Discharge: While the BMS protects against over-discharge, it is best practice to recharge the battery before it reaches a very low SOC to maximize cycle life.
7. Troubleshooting
This section addresses common issues you might encounter with your Banshee battery.
| Problem | Possible Cause | Solution |
|---|---|---|
| Battery not charging | Charger not connected, faulty charger, BMS protection activated, incorrect charger type. | Check charger connections. Ensure charger is compatible with LiFePO4 batteries. If BMS is active (check app/LCD), disconnect load and allow battery to reset. Try a different charger. |
| No power output | Loose connections, BMS protection activated (over-discharge, short circuit), battery fully discharged. | Check all cable connections. Recharge the battery. If BMS is active, remove the load and allow it to reset. |
| Bluetooth app not connecting | Bluetooth off, app not paired, device not compatible, battery too far. | Ensure Bluetooth is enabled on your device. Restart the app and battery. Move closer to the battery. Verify device supports Bluetooth 4.0 BLE. |
| LCD screen not displaying | Battery fully discharged, internal fault. | Attempt to charge the battery. If the issue persists, contact support. |
If you encounter issues not listed here or if solutions do not resolve the problem, please contact Banshee customer support.
8. Specifications
Detailed technical specifications for the Banshee LM12100LFP-SLIM battery:
- Model: LM12100LFP-SLIM
- Battery Type: LiFePO4 (Lithium-Phosphate)
- Nominal Voltage: 12V
- Capacity: 100 Ah (Amp-hours)
- Energy: 1280 Wh
- Cycle Life: 2,000-5,000 cycles
- Charging Time: Approximately 2 hours (with compatible charger)
- Connectors: Twin 50A & 120A Anderson Style, M8 Insert Terminals
- Dimensions (L x W x H): 20.67 x 13.27 x 2.26 inches
- Weight: 14.88 kg (32.8 pounds)
- Internal Protection: Integrated BMS (Overcharge, Over-discharge, Short Circuit, Over-temperature, Over-power, Over-voltage protection)
- Manufacturer: BatteryJack Inc.
- UPC: 840417443270

Image: The Banshee Slim Battery with its precise dimensions labeled: Length 20.67 inches, Width 13.27 inches, Height 2.26 inches.
9. Warranty Information
The Banshee LM12100LFP-SLIM 12V 100Ah Slim LiFePO4 Battery comes with a 5-year warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use and service. It does not cover damage resulting from misuse, abuse, accident, unauthorized modifications, or improper installation.
For warranty claims, please retain your proof of purchase and contact Banshee customer support.
10. Support
For technical assistance, troubleshooting guidance, or any questions regarding your Banshee battery, please visit the official Banshee website or contact their customer support team. You can also refer to the Banshee store on Amazon for additional resources and contact information.
Banshee Store Link: Visit the Banshee Store on Amazon