The Samsung 25r 18650 Battery is a high performance lithium-ion cell with a 2500mAh capacity and a 20A to 22A continuous discharge rate (30A maximum).
The Samsung 25r is the most popular 18650 lithium ion battery on the market, and the very first 18650 cell used in vaping mods.
The complete designation of this battery is: samsung-inr-18650-25r-2500mah-20a

Sold by Unit.

Fully charge the battery before first use. Never keep this battery together with metal objects or carry it loose in your pocket with keys, coins or any other metal objects (it may cause a short circuit).

Specifications:
Capacity: 2500mAh
Rechargeable battery
Maximum discharge rate: 30 amps
Discharge: 20A-22A continuous
Rated voltage: 3.6V
Positive Pole: Flat Top
Height: 65mm
Diameter: 18.2mm

WARNING!
Do not use if damaged or above 21.2 ° F / 100 ° C.
Do not disassemble or modify the battery.
Do not carry batteries in your pockets or purse.
The battery can explode or catch fire if used improperly.
Do not use the maximum rating or pulse rating for mechanical vaporization devices.