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Samsung INR18650 25R V2 "Mini Hulk" High-Drain 20A/35A Discharge 3.7V 2500mAh Rechargeable Lithium Battery (Flat Top)


We finally got our hands on a reliable supply of Samsung 25R v2s. This improvement over the original 'Smurf' 25Rs features improved temperature load & reliability

New 2019: Prices have been lowered to S$10/pc to pass on savings to our customers

New Jun 2020: Prices have been lowered to S$9/pc to pass on savings to our customers



Nominal Capacity: 2500 mAh

Nominal Voltage: 3.6V
Discharge End Voltage: 2.5V
Standard Charging Current: 1.25A
Charging Voltage: 4.20+-0.05V
Max. Continuous Discharging Current: 20A / Pulse Current: 35A
Dimensions: 64.85mm (L) x 18.33 mm (D)
Weight: 45.0g



Regarding Exchanges/Warranty

Due to the nature of this consumable product, no returns/exchanges with this product or other replacements are allowed unless the product is DOA

Warranty coverage will be 3 Months Full Warranty (against explosions/leakage/venting) unless battery has been found to be pushed beyond its stated specs, misused or overdischarged 



  • CAUTION: when working with Li-ion cells, they are very sensitive to charging characteristics and may explode if mis-handled
  • User should have enough knowledge on Li-Ion rechargeable batteries in charging, discharging,and assembly before use
  • Put the batteries in fire-proof container when bringing them out or when they are not in use
  • Do not put batteries on wood surface, carpets or flammable materials when charging
  • Never leave battery un-attended when charging (especially overnight)
  • We are not responsible for any damage(s) to property or injuries if there is any modification of the batteries in form, shape, or when made into packs
  • We are not reponsible for any damage(s) to property or injuries arising from possible explosions, leaks or fires resulting from the use or misuse/mishandling of these Li-Ion batteries


3 Months Full 1-1 Exchange Warranty