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Samsung 25R – 18650 LIMN 20 CDR HIGH DRAIN BATTERY


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Samsung 25R (INR18650-25R) is one of the most commonly used 18650 cells available on the market due to its high production volume and low commodity price. The 25R is a mid-power range cell at 2500mAh and 20A maximum continuous excellently balanced for use in mid to high power 18650 battery pack applications, power tools and more.

Please note Samsung SDI manufactures the 25R in both Korea and Malaysia. Our stock is comingled and you may receive either type. The cells perform to the same specification, the only difference is the country of origin. Malaysian cells are marked SDIEM (Samsung SDI Energy Malaysia).


Safe chemistry LiMN means reduced risk of venting with flame or explosion. Due to the safety inherent in IMR safe chemistry batteries there is no protection circuitry added or built in. This provides a slightly shorter battery length to enable a good fit in most mods.

To ensure longevity, it is not recommended to allow the battery to discharge below 2.5V.

Please note that due to their inherent safety, IMR cells don’t have a protection circuit built in. They should never be discharged below 2.5 volts or cycle life/performance will be reduced. Maximum charge voltage is 4.25 volts.


Manufacturer:   Samsung SDI
Model:   INR18650-25R (25R)
Size:   18650
Style:   Flat Top
Protected:   NO, UNPROTECTED. 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.
Nominal Capacity:   2500mAh
Discharge Current:   20A Maximum Continuous
Nominal Voltage:   3.6V
Maximum Voltage:   4.2V
Cutoff Voltage:   2.5V
Approximate Dimensions:   18.33m x 64.85mm
Approximate Weight:   45g
Origin:   Republic of Korea; or Malaysia
Specification Datasheet:   Samsung 25R Datasheet
This product is a lethiom ion battery which must be always kept safe and away from loss metals to avoid shorting. It must be used only by experienced users (NOT for beginners).  This battery can be dangerous if used incorrectly.  Before purchasing this product be sure you understand battery safety.
For more information about using Batteries and Mechanical Mods refer to Dukhan Blog where we reveal the expert guide for using mechanical mods

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