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LG HE4 18650 2500mAh 20/35A 3.7v Rechargeable Flat Top Batteries [2 Cells/Pack]
The LG IMR 18650 HE4 high drain rechargeable Li-ion batteries clocks in at 3.7 volts 2500mAH and a 20A discharge rate. These are the flat top style and do not have any protection. While somewhat similiar to the HE2 from LG, the HE4 is tauted to have less issues with heat – lower temperature, and lower internal resistance overall making it great for use in high power tools, or any other device that needs a lot of power like e-cigs/mods, bicycles etc.
These batteries have a lower internal resistance than your regular 18650 battery cells, and will deliver a higher voltage under load.