Samsung 25R 18650 2500mAh 20A Battery

4.88 out of 5
(34 customer reviews)

$9.90 ea

  • Nominal Capacity: 2500mAh
  • Nominal Voltage: 3.6V
  • Discharge: 20A Max Continuous
  • Positive: Flat Top
  • Dimensions: 18.22mm x 64.80mm
  • Weight: 43.7g

In Stock at Cell Supply

Ships from our Tauranga warehouse

Bulk Discount Pricing

Quantity Price
1 -9 $9.90
10 -49 $8.91
50 -99 $8.42
100 -299 $7.92
300 + $6.93


Samsung 25R 18650 2500mAh 20A Rechargeable Battery

A popular and respected 18650 size cell, it is still widely sold and respected. This cell has excellent quality and a low price. In terms of performance and reliability, this is an outstanding cell. A high maximum continuous discharge/drain rating of 20 amps, and a moderate-high energy capacity of 2,500 mAh make this cell very well balanced (Without any temperature cut involved). Even when pushed to its limits, this cell remains very stable. As you can see from its attributes, The Samsung 25R has pretty much everything you could want in a Li-Ion cell! These include power packs, high-output power banks, BMS’s, and high-powered flashlights. In comparison to previous cells, this one is more stable and safer. This cell has stood the test of time and checks nearly every box. Nobody can deny its long history and popularity among consumers.
  • Brand: Samsung SDI
  • Model: 25R, INR18650-25R (25RM)
  • Size: 18650
  • Chemistry: INR
  • Nominal Capacity: 2500mAh
  • Nominal Voltage: 3.6V
  • Discharge: 20A Max Continuous
  • Positive: Flat Top
  • Protected: NO
  • Rechargeable: Yes
  • Dimensions: 18.22mm x 64.80mm
  • Weight: 43.71g

Samsung 25R datasheet

IMPORTANT : This cell is unprotected and intended for use in protected battery packs only and NOT individually or as a standalone product. In order to operate safely it must have additional protection in the form of a PCB (protection circuit board) or BMS (battery management system), which is not included.

Additional information

Weight 0.05 kg

Battery Size

Battery Style


Discharge Rating


Nominal Voltage

Battery Chemistry


Battery Capacity


34 reviews for Samsung 25R 18650 2500mAh 20A Battery

  1. 5 out of 5

    Landin S.

    It was exactly what I ordered. I will definitely be using this website again

  2. 5 out of 5

    Ryan O.

    Workin’ like a charm – very quick and professional.

  3. 5 out of 5

    oscar p.

    Well I got some batteries in a different place and they didn’t work. But with your product I saw the right functions right away! Thanks

  4. 5 out of 5

    Sean T.

    Five star ratings.

Only logged in customers who have purchased this product may leave a review.

Best Value

The current lithium-ion market is becoming increasingly scarce, as demand outpaces supply. Demand for lithium-ion batteries has soared due to the popularity of electric vehicles. No matter what, we will never compromise on the quality of our batteries.

Genuine Authentic Cells

With so many websites, wholesalers, and auction sites selling fake or outdated cells, knowing what you're purchasing could be tricky unless you're an expert. Only grade A, sorted, authentic cells with recent manufacture dates are supplied.

Fast Delivery

We understand how important it is for you to receive your products quickly, and we aim to meet your expectations! Our Tauranga warehouse ships orders each day. All in-stock orders submitted before 6 p.m. will be processed the same day.