Power Queen PQ-25.6V100Ah
Power Queen 25.6V 100Ah LiFePO4 Battery Instruction Manual
Model: PQ-25.6V100Ah
Introduction
This manual provides essential information for the safe and efficient operation of your Power Queen 25.6V 100Ah LiFePO4 Battery. Please read all instructions carefully before installation and use to ensure optimal performance and longevity of your battery.
Safety Information
- This battery is designed for energy storage, not as a start-up battery for engines or golf carts.
- Ensure proper polarity when connecting the battery to avoid short circuits.
- If using OT terminals with screws, add gaskets if the terminal thickness is less than 2mm to ensure secure attachment and prevent loosening or overheating.
- Do not disassemble the battery.
- Avoid storing the battery above 140°F (60°C).
- Do not mix-wire with lead-acid/GEL/AGM batteries.
- Always wear insulating gloves during installation and wiring.
What's in the Box
Upon unboxing, verify that all items are present:
- Power Queen 25.6V 100Ah LiFePo4 Battery
- M8 - Terminal Bolts
- Insulating Caps for Bolts
- Product Instruction Manual

Product Features
- Integrated 100A BMS: Built-in Battery Management System protects against overcharge, over-discharge, over-current, and short circuit.
- High Capacity: 25.6V 100Ah LiFePO4 battery provides 2.56kWh of energy, suitable for various applications.
- Long Cycle Life: Offers 4,000 to 15,000 deep cycles, ensuring extended battery lifespan.
- Expandable System: Supports up to 2 batteries in series and 4 in parallel (Max 2S4P) for a maximum 51.2V 400Ah system (20.48kWh).
- Space-Saving Design: Directly replaces two 12V 100Ah lithium batteries in series, reducing footprint and simplifying connections.
- Lightweight: Weighs approximately 46 pounds, making it easier to handle compared to traditional lead-acid batteries.


Setup and Installation
Connecting Terminals
Use the provided M8 terminal bolts and insulating caps. Ensure connections are tight and secure. If using thin OT terminals (less than 2mm), add gaskets to prevent loosening or overheating.
Series and Parallel Connections
The battery supports up to 2 units in series and 4 units in parallel (Max 2S4P). This allows for increased capacity (up to 400Ah) and higher voltage (up to 51.2V) for larger systems.
- For a 48V system, connect two 25.6V 100Ah batteries in series.
- For increased capacity at 25.6V, connect batteries in parallel.

Operating Instructions
Initial Charge
The battery is shipped at approximately 30-50% capacity to comply with shipping regulations. Fully charge the battery before its first use.
Monitoring with Bluetooth App
The Power Queen battery can be monitored via a smartphone app. Scan the QR code on the battery to download the official Power Queen app. The app provides real-time data on State of Charge (SOC), discharge time, temperature, power (watts), current (amps), and voltage. It also displays cycle times and firmware version.
Maintenance
Charging
Use a compatible LiFePO4 charger. The charging voltage for a 25.6V battery is typically 28.8V-29.2V. Ensure your charger is set to the correct lithium profile.
Long-Term Storage
For long-term storage, it is best to store your battery at a 50% charge level and recharge every three months if it is not going to be used for a long time. Store in a fireproof container and away from children.
Troubleshooting
If you encounter issues, refer to the detailed product manual for specific troubleshooting steps. Common issues may include:
- Battery not charging: Check charger connections, settings, and battery temperature.
- Battery not discharging: Verify load connections and ensure the BMS has not activated a protection mode.
- App connectivity issues: Ensure Bluetooth is enabled on your device and the battery is within range.
For further assistance, contact Power Queen customer support.
Specifications
| Attribute | Value |
|---|---|
| Brand | Power Queen |
| Model | PQ-25.6V100Ah |
| Size | 24V100Ah (25.6V Nominal) |
| Product Dimensions | 9.37"D x 20.5"W x 8.54"H |
| Item Weight | 46 pounds |
| Number Of Cells | 8 |
| Resistance | 40 Milliohms |
| Terminal Type | M8 |
| Amperage | 100 Amps |
| Max Load Power | 2.56kW |
| Energy Capacity | 2.56kWh |
Applications
The Power Queen 25.6V 100Ah LiFePO4 battery is versatile and suitable for a wide range of applications:
- Home & Off-Grid Solar Power Systems: Provides reliable energy storage for residential and remote solar installations.
- RV & Marine: Ideal for powering appliances and electronics in recreational vehicles and boats.
- 24V Trolling Motors: Suitable for trolling motors within 100lb thrust.
- Emergency Backup Power: Can be integrated into systems for emergency power supply.

Warranty and Support
Power Queen offers a 5-Year Warranty on this product. For any questions, technical support, or warranty claims, please contact Power Queen customer service. Contact information can be found in the included Quick Start Guide or on the official Power Queen website.

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