High-capacity, high-drain power for your 18V/20V power tool battery rebuilds.
This EVE 25P 2P5S 18650 Battery Pack is a pre-assembled bare cell configuration, featuring ten genuine EVE 18650-25P high-drain cells arranged in a compact 2P5S layout (2 in parallel, 5 in series) with spot-welded nickel tabs. It delivers a nominal 18.5V voltage (21V full charge) and a substantial 5000mAh capacity, with a powerful 12C continuous discharge capability.
The 2P5S configuration doubles the capacity of a standard 5S tool battery, making it ideal for extended runtime in 18V/20V cordless tools.
IMPORTANT: This is a BARE CELL PACK.
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No BMS (Protection Board) is included.
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No wires or connectors are attached.
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The nickel tabs are pre-welded at specific positions: Total Positive and Total Negative. Please verify your wiring carefully.
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You must have the skills to solder your own connections and install an external 5S BMS before use. Never use or charge this pack without proper protection.
Key Features
Genuine EVE 25P Cells: Authentic high-drain 18650 cells, rated for high-current applications.
12C High Discharge: Delivers explosive power for demanding power tools and custom equipment.
2P5S Configuration (18.5V / 5000mAh): Doubles the capacity compared to a standard 5S pack, providing longer runtime for 18V/20V tools.
Pre-welded Nickel Tabs: Comes with pure nickel strips spot-welded to the terminals, ready for you to solder your wires.
Custom Tab Options: Nickel tab positions may vary; we can customize the welding layout based on your wiring diagram.
Parameters
*Dimensions are approximate. Please allow ±1-2mm tolerance.
Applications
Recommended For:
18V/20V Power Tool Rebuilds: Ideal for upgrading standard 5S tool batteries to a higher-capacity 2P5S configuration (requires BMS and proper wiring).
DIY Battery Packs: For building custom 18V/21V power packs for robotics, portable devices, and LED lighting.
Custom High-Drain Projects: Spot welders, portable jump starters, or any project demanding high burst currents.
Not Recommended For:
Beginners or Plug-and-Play Users: If you cannot spot-weld, solder, and install a BMS, do not buy this product.
Devices Requiring a Finished Pack: This will not fit directly into standard battery compartments without custom wiring.
Vaping (Unprotected): Using bare, unprotected cells in mechanical mods is extremely dangerous and not recommended.
FAQ
Q1: Does this battery have a protection board (BMS)?
A: No. This is a bare cell pack. You must install an external 5S BMS to protect against overcharge, over-discharge, and short circuits.
Q2: Will this fit my power tool battery?
A: It depends on your tool's internal dimensions. The 2P5S layout is wider (approx. 73.6mm) than a standard 1P5S pack. Please measure your battery housing to ensure it fits.
Q3: Does it come with wires?
A: No. It only includes spot-welded nickel tabs. You will need to solder your own wires.
Q4: Can I customize the nickel tab positions?
A: Yes. The image notes that tab positions may vary. We can weld the tabs according to your specific wiring diagram. Please contact us with your layout requirements before ordering.
Q5: What is the actual discharge current?
A: The EVE 25P cells are rated for high-drain applications. However, the actual current depends on the BMS and wiring you install.
