High-drain power in a compact layout for your custom DIY battery packs and device rebuilds.
This EVE 25P 5S 18650 Battery Pack is a pre-assembled bare cell configuration, featuring five genuine EVE 18650-25P high-drain cells arranged in a compact staggered layout in series (5S1P) with spot-welded nickel tabs. It delivers a nominal 18V voltage (21V full charge) and a 2500mAh capacity, with a powerful 30A continuous discharge (12C) capability.
This specific compact configuration is commonly used for rebuilding the battery packs of "Taifeng Pills" and similar portable devices where space is extremely limited.
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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CRITICAL WARNING: The image clearly marks the Total Positive and Total Negative. Reversing the polarity will burn out your device's motherboard. Please verify the wiring carefully.
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You must have the skills to solder your own connections and install an external 5S BMS before use.
Key Features
Genuine EVE 25P Cells: Authentic high-drain 18650 cells, rated for high-current applications.
30A Continuous Discharge (12C): Delivers explosive power for demanding DIY projects and device rebuilds.
Compact Staggered Layout: Specifically designed for tight battery compartments (like Taifeng Pills).
Pre-welded Nickel Tabs: Comes with pure nickel strips spot-welded to the terminals, ready for you to solder your wires.
5S Series Configuration (18V): Provides the higher voltage required for 18V/21V applications.
Parameters
*Dimensions are approximate. Please allow ±1-2mm tolerance.
Applications
Recommended For:
Taifeng Pills Rebuilds: Designed for replacing the battery core in specific portable devices (refer to your device's dimensions).
DIY Battery Packs: For building custom 18V power packs for power tools or portable devices.
Custom High-Drain Projects: Spot welders, portable jump starters, or any project demanding 30A bursts.
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: How do I wire this pack without burning my device?
A: CRITICAL: Please refer to the product image. The Total Positive and Total Negative are clearly marked. You must connect your BMS and device according to this polarity. Reversing it will burn out the motherboard.
Q3: Does it come with wires?
A: No. It only includes spot-welded nickel tabs. You will need to solder your own wires.
Q4: What is the actual discharge current?
A: The EVE 25P cells are rated for a continuous discharge of 30A (12C). However, the actual current depends on the BMS and wiring you install.
Q5: What are the dimensions?
A: Due to the staggered layout, the footprint is approximately 55.2mm x 55.2mm, with a height of 65mm. Please measure your device's battery compartment to ensure it fits.
