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LG18650 MJ1 High-Drain 10A/20A High Discharge 3.7V 3500mAh Rechargeable Lithium Battery (Protected Button Top)


Out of stock

This is a custom-made LG MJ1 18650 3500mAh 10A Continuous High-Discharge Battery with button top. Having a button top allows the cell to run on lights or devices which do not accept flat top cells. This cell is also protected so its safe to charge inside lights with USB charging 

Used on: High-powered flashlights like the Klarus XT11GT etc...

Note Jun 2020: Latest version of LG MJ1 looks different from picture above, new ones have a LG Chem warning near the bottom of the battery

New Jun 2020: Prices have been lowered to S$15/pc to pass on savings to our customers


Nominal Capacity: 3500 mAh
Nominal Voltage: 3.6V
Discharge End Voltage: 2.5V
Standard Charging Current: 1A
Max Charging Current: 4A
Charging Voltage: 4.20+-0.05V
Max. Continuous Discharging Current: 10A
Internal Resistance: <20 milliohms
Dimensions: 65.20mm (L) x 18.50 mm (D)
Weight: 48.0g


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 Limited Warranty