This is a Trueman 14650 rechargeable li-ion battery replacement. To set up a whole tf1 battery, first insert the 14650 rechargeable battery into trueman tf1 battery housing. Then push the battery cap into the housing until it locks correctly.
Unit: 1 pc
How to charge the battery?
* you can use an external battery charger.The output of it is 3.7v 450mah. The charging will stop automatically at 4.2v when it's fully charged.
* you can also put it into the tf1 housing and charge it with an eGo USB charger directly.
The usual charging time is 2.5 hours.