Ultimate 10,000mAh capacity with medium-power output, ready to plug in.
This EVE 21700-50E 2P2S Battery Pack is assembled from four genuine EVE 21700-50E high-capacity cells in a 2P2S configuration (2 in parallel, 2 in series). It delivers a nominal 7.4V voltage (8.4V full charge) and a massive 10,000mAh capacity, with a continuous discharge current of up to 10A (Max 84W).
Designed for custom electronic builds and portable devices, it features a built-in Protection Board (BMS) for safety against overcharge, over-discharge, and short circuits. It comes pre-wired with DC male and female connectors and includes a free DC adapter for easy connection to your devices.
Important: This battery must be charged with an 8.4V (2S) Li-ion charger. Do not use a 12.6V charger. Due to the 84W power limit, it is not intended for heavy-duty power tools.
Key Features
Huge Capacity (10,000mAh): Four 21700 cells in a 2P2S layout provide double the runtime of a 2S pack while maintaining a compact size.
10A Continuous Output (84W): Delivers enough power for medium-drain devices, LED lighting, and custom electronics.
Built-in Protection Board (BMS): Comprehensive safety against overcharge, over-discharge, over-current, and short circuits.
Dual DC Connectors + Adapter: Comes with DC male and female plugs, plus a free DC adapter, making it highly compatible with various devices.
Compact 2x2 Layout: Shrink-wrapped with the protection board, measuring approx. 72mm (H) x 47mm (W) x 43mm (D).
Parameters
*Dimensions are approximate and include the protection board and heat shrink wrap.
Applications
Recommended For:
High-Capacity 7.4V Devices: Perfect for custom audio amplifiers, portable speakers, and 7.4V electronics.
High-Power LED Lighting: Suitable for 7.4V LED work lights or camping lights drawing under 10A.
DIY Power Banks & Stations: Build a massive 10,000mAh backup power supply for portable devices.
Robotics & Custom Projects: Reliable 7.4V power for motors and controllers drawing within 10A.
Not Recommended For:
High-Drain Power Tools (>10A/84W): Do not use in drills, saws, or heavy RC cars. The 10A BMS limit will cut off power under heavy loads.
Devices Requiring Different Voltages: Use only in devices designed for 7.4V/8.4V. Do not use in 12V systems.
Charging with Unmatched Chargers: Never charge with a 12.6V (3S) charger. Use only an 8.4V (2S) Li-ion charger.
FAQ
Q1: What does "2P2S" mean?
A: "2P2S" means 2 cells in parallel and 2 in series. This doubles the capacity (2 x 5000mAh = 10,000mAh) and doubles the voltage (2 x 3.7V = 7.4V) compared to a single cell.
Q2: What is the maximum discharge current and power?
A: The protection board limits continuous discharge to 10A, with a maximum output power of 84W. It is not designed for high-drain power tools.
Q3: How do I charge this battery?
A: You must use a dedicated 2S Li-ion charger with an 8.4V output. Do not use a 4.2V single-cell charger or a 12.6V 3S charger, as this will damage the battery.
Q4: What connectors are included?
A: It comes pre-wired with DC male and female connectors and includes a free DC adapter to help connect to various devices.
Q5: Can I use this for a power tool?
A: No. Power tools typically require much higher power (hundreds of watts). The 84W limit on this BMS will cause it to shut off immediately under heavy load.
