High-drain power in a classic inline layout for your custom DIY battery packs.
This EVE 25P 4S 18650 Battery Pack is a pre-assembled bare cell configuration, featuring four genuine EVE 18650-25P high-drain cells arranged side-by-side in series (4S1P) with spot-welded nickel tabs. It delivers a nominal 14.8V voltage (16.8V full charge) and a 2500mAh capacity, with a powerful 30A continuous discharge (12C) capability.
The linear layout makes this pack suitable for long battery compartments. If the pre-welded nickel tabs do not perfectly match your BMS or wiring diagram, we offer custom tab welding—simply contact us with your specific requirements before ordering.
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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You must have the skills to solder your own connections and install an external 4S 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.
30A Continuous Discharge (12C): Delivers explosive power for demanding DIY projects, RC models, or custom power tools.
Inline 4-Cell Layout: Space-saving linear design, ideal for long, narrow battery compartments.
Pre-welded Nickel Tabs: Comes with pure nickel strips spot-welded to the terminals, ready for you to solder your wires or build a battery pack.
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:
DIY Battery Packs: For building custom 14.8V power packs for robotics, power tools, or portable devices.
RC Models & Airsoft: Suitable for high-current RC cars, boats, or Airsoft AEGs (requires proper wiring and BMS).
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 4S BMS to protect against overcharge, over-discharge, and short circuits.
Q2: Does it come with wires?
A: No. It only includes spot-welded nickel tabs. You will need to solder your own wires or spot-weld your connections.
Q3: 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.
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 you can draw will depend entirely on the BMS and wiring you install.
Q5: What are the dimensions?
A: The four cells are arranged inline, measuring approximately 73.6mm (Length) x 65mm (Height) x 18.4mm (Depth).
