Inside most vape batteries are a small circuit board at the tip with a LED, a lithium-ion battery, a small microchip and a very tiny mechanical switch that powers on when you draw vapor through the mouthpiece. The LED indicates to you if it is activated or if the battery needs recharged. It will also flash if your drag is longer than 5 seconds.
Protected batteries have a small circuit board, typically on the bottom of the battery, that stops the charging or discharging of the battery in certain circumstances. These batteries require special chargers that are designed to charge lithium rechargeable batteries.
Unprotected lithium batteries produce 4.2 volts of power when fully charged, then quickly fall to 3.6 volts output. They output 3.6 volts until they are mostly discharged, at which point the voltage falls rapidly. If they are discharged below 3 volts, they will be ruined and no longer usable. These batteries should only be charged with a charger specifically designed for them, as they have a circuit that stops charging the battery when they reach 4.2 volts.
The mAh capacity rating refers to the storage capacity available for a particular battery. A battery with a capacity rating of 3000 mAh can deliver a current of 3000mA for one hour. Higher mAh ratings for the same battery type mean longer run times.
Here is a breakdown of battery names so you can better identify which type you need.
• Lithium Ion and Cobalt (IC)
• Rounded Battery ( R )
• Diameter of battery in mm (18)
• Height in tenths of millimeters (650)
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