EVE 25P 2S 18650 Battery Pack 7.4V 2500mAh 30A High Drain – Unprotected Bare Cells with Spot-Welded Tabs for DIY Battery Packs
Description
High-drain power for your custom DIY battery packs.
This EVE 25P 2S 18650 Battery Pack is a pre-assembled bare cell configuration, featuring two genuine EVE 18650-25P high-drain cells connected in series (2S1P) with spot-welded nickel tabs. It delivers a nominal 7.4V voltage (8.4V full charge) and a 2500mAh capacity, with a powerful 30A continuous discharge (12C) capability.
This product is designed specifically for experienced DIY builders who require a compact, high-current power source for custom projects.
IMPORTANT: This is a BARE CELL PACK.
-
No BMS (Protection Board) is included.
-
No wires or connectors are attached.
-
You must have the skills to spot-weld/solder your own connections and install an external 2S 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.
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.
2S Series Configuration (7.4V): Provides the higher voltage required for 7.4V/8.4V applications.
Compact Layout: Two cells side-by-side, measuring approx. 36.8mm x 65mm x 18.4mm.
Parameters
| Parameter | Specification |
|---|---|
| Cell Model | EVE 18650-25P |
| Configuration | 2S1P (2 cells in series) |
| Nominal Voltage | 7.4V |
| Full Charge Voltage | 8.4V |
| Nominal Capacity | 2500mAh |
| Continuous Discharge Current | 30A (12C) |
| Chemistry | Li-ion (NMC) |
| Protection Board | No (Bare Cell Pack) |
| Wires/Connectors | Not Included (Nickel Tabs Only) |
| Dimensions | Approx. 36.8mm (W) x 65mm (H) x 18.4mm (D)* |
| Weight | Approx. 95g |
*Dimensions are approximate. Please allow ±1-2mm tolerance.
Applications
Recommended For:
DIY Battery Packs: For building custom 7.4V 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 2S 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: 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.
Q4: How do I charge this pack?
A: Once you install a BMS, you must use a dedicated 2S Li-ion charger (8.4V output). Never charge bare cells directly without a BMS.
Q5: What are the dimensions?
A: The two cells are arranged side-by-side, measuring approximately 36.8mm (Width) x 65mm (Height) x 18.4mm (Depth).
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
One less heat source in my enclosure.
Measured the thickness and it is appropriate for the rating.
High drain means no speed drop as the battery drains.
Small thing, but keeps the terminals safe in transit.
Left them in the car by mistake and they still tested fine.
Refund Policy
Last updated: November 3, 2026
Returns
Return eligibility depends on the items in your order.
Where returns are accepted, items must be returned in the same condition they were received, unworn or unused, with tags, and in their original packaging or as otherwise indicated in the return instructions. We may reduce your refund if the item has been used, damaged, or handled more than necessary.
Contact us to ask about return options and how to start a return.
How to start a return
Whether return or cancellation requests are accepted depends on the terms above and your rights under applicable law.
Contact us before returning an item.
Unless we state otherwise or applicable law requires otherwise, you are responsible for return shipping costs for change-of-mind returns.
Damages and issues
Please inspect your order when you receive it and contact us immediately if an item is defective or damaged, or if you received the wrong item.
Exceptions and non-returnable items
Some items may not be eligible for return, as stated in the return terms above or on the product listing, website, or in-store at the time of purchase.
Contact us if you have questions about whether a specific item can be returned.
Exchanges
Contact us to ask about exchange options before returning your item.
Refunds
We will notify you after we receive and inspect your return and let you know whether the refund was approved. If approved, you will be refunded to your original payment method, unless otherwise stated. Your bank or payment provider may need additional time to process and post the refund.
If you do not see your refund within a reasonable period of time since your refund was approved, contact us.
This policy does not limit any rights you may have under applicable consumer protection laws, including rights that may apply if goods are defective, not as described, not delivered within the required or agreed timeframe, or otherwise do not comply with applicable law.
Contact
To request a cancellation, start a return, inquire about a return, ask about an exchange or report damaged items, please contact us at support@powerpackhub.com or use the contact details in our contact information policy.