Safe 6.4V power in a compact 4+4 layout, with quadruple the capacity for your 6V devices and DIY projects.
This 32700 LiFePO4 (Lithium Iron Phosphate) Battery Pack features eight large-format cells arranged in a 2S4P configuration (2 in series, 4 in parallel) in a staggered 4+4 layout. It delivers a stable 6.4V nominal voltage (7.3V full charge) and a massive 20000mAh 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 replacing 4-cell AA/alkaline battery packs (6V) in solar lights, toys, portable devices, and custom 6V projects. The 4+4 layout creates a compact, square-like footprint (130x142mm), making it ideal for tighter enclosures where a long inline pack won't fit. 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 2S LiFePO4 battery (6.4V nominal). You MUST use a dedicated LiFePO4 charger with a 7.3V cutoff. Never use a standard 2S Li-ion charger (8.4V) or a single-cell 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.
2S4P Configuration (6.4V / 20000mAh): Offers both the 6V voltage you need and quadruple the capacity for exceptionally long runtime.
Compact 4+4 Layout: Space-saving rectangular design (approx. 130mm x 142mm) ideal for tighter enclosures.
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).
Parameters
*Dimensions are approximate and include the protection board and heat shrink wrap. Please allow ±1-2mm tolerance.
Applications
Recommended For:
6V Solar Lights: The ideal replacement battery for outdoor solar path lights and lawn lamps requiring longer runtime.
6V Devices: Perfect replacement for devices using 4x AA/alkaline batteries (4x 1.5V = 6V).
DIY 6.4V Projects: Custom electronics requiring a stable 6V-6.4V power source.
Emergency Lighting: Reliable, safe power for low-drain emergency lamps.
Not Recommended For:
Devices Requiring 7.4V/8.4V: This battery will not work properly in standard 2S Li-ion devices due to the lower voltage.
Standard Flat Battery Bays: Due to the 4+4 rectangular shape, please measure your enclosure carefully to ensure it fits.
Standard Li-ion Chargers: Never charge this with an 8.4V or 4.2V charger.
FAQ
Q1: Can I use my standard 2S Li-ion charger (8.4V) for this battery?
A: NO. You must use a dedicated LiFePO4 charger with a 7.3V cutoff. Using an 8.4V charger will overcharge and damage the battery, potentially causing a fire.
Q2: Why is the voltage 6.4V? I thought 2S was 7.4V.
A: This is a LiFePO4 battery, not a standard Li-ion battery. LiFePO4 cells have a nominal voltage of 3.2V (3.2V x 2 = 6.4V), with a max charge of 7.3V. Standard Li-ion is 3.7V/4.2V.
Q3: What does "2S4P" mean?
A: It means 2 cells in series (to double the voltage to 6.4V) and 4 cells in parallel (to quadruple the capacity to 20000mAh).
Q4: 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.
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.
