Monster 20,000mAh capacity with ultimate safety for your solar, storage, and DIY projects.
This 32700 LiFePO4 (Lithium Iron Phosphate) Battery Pack features four large-format cells connected in parallel (4P). It delivers a stable 3.2V nominal voltage (3.65V full charge) and a massive 20000mAh (20Ah) capacity.
Unlike standard 3.7V Li-ion cells, LiFePO4 chemistry offers superior thermal stability, an ultra-long cycle life, and a much lower risk of fire or explosion. The 32700 form factor (approx. 32mm diameter per cell) is ideal for high-capacity solar street lights, RV energy storage systems, portable power stations, and replacing large lead-acid batteries. It comes fully assembled with a built-in protection board (BMS) and pre-wired with red (positive) and black (negative) leads. Note: The wire ends are bare (no connector attached).
CRITICAL WARNING: Voltage Compatibility
This is a LiFePO4 battery (3.2V nominal). You MUST use a dedicated LiFePO4 charger with a 3.65V cutoff. Never use a standard 3.7V/4.2V Li-ion charger, as it will overcharge the battery and cause permanent damage or fire.
Key Features
LiFePO4 Chemistry: High thermal stability, excellent safety, and an ultra-long cycle life.
Monster Capacity (20000mAh): Four 5000mAh cells in parallel provide quadruple the capacity for extended runtime and heavy-duty energy storage.
Built-in Protection Board (BMS): Protects against overcharge, over-discharge, over-current, and short circuits.
Pre-wired Leads: Comes with red (+) and black (-) wires. No connector is attached (bare wire ends).
32700 Form Factor: Large, robust cells designed for high-capacity applications.
Parameters
*Dimensions are approximate and include the protection board and heat shrink wrap. Please allow ±1-2mm tolerance.
Applications
Recommended For:
High-Capacity Solar Street Lights: The massive capacity makes it perfect for large outdoor solar lighting systems.
RV & Off-Grid Storage: Ideal for building custom 3.2V power banks or battery packs for camping, RVs, and portable power stations.
Replacing Lead-Acid Cells: A lightweight, long-lasting alternative for small 3V/4V lead-acid batteries.
Custom Electronics: Suitable for large devices requiring a stable 3.2V power source.
Not Recommended For:
Devices Requiring 3.7V/4.2V: This battery will not work properly in standard Li-ion devices due to the lower voltage.
Plug-and-Play Applications: Since there is no connector on the wires, you must have soldering or wiring skills to connect it to your device.
Standard Li-ion Chargers: Never charge this with a 4.2V charger.
FAQ
Q1: Can I use my standard 3.7V Li-ion charger for this battery?
A: NO. You must use a dedicated LiFePO4 charger (3.65V cutoff). Using a 4.2V charger will overcharge and damage the battery, potentially causing a fire.
Q2: Why is the voltage 3.2V? My other batteries are 3.7V.
A: This is a LiFePO4 battery, not a standard Li-ion battery. LiFePO4 cells have a nominal voltage of 3.2V and a max charge of 3.65V. They are safer and last longer, but cannot be used interchangeably with 3.7V devices.
Q3: Does it come with a connector?
A: No. The battery comes with bare red and black wires. You will need to solder or attach your own connector based on your device's requirements.
Q4: What is the actual capacity?
A: The pack consists of four cells in parallel, providing a total capacity of 20000mAh (20Ah).
Q5: How should I connect the wires?
A: The red wire is positive (+) and the black wire is negative (-). Ensure correct polarity when connecting to your device.
