Head light is good for polymer batteries Or 18650 batteries, okay?
but compared with the liquid lithium battery with high energy density, more compact, thin, lightweight, and high safety and other advantages, is a new type of battery
At the same time, lithium polymer batteries with ultra-thin characteristics, nominal voltage is 3.7V, there is no memory effect.
The polymer battery also called lithium polymer battery, it is also a kind of lithium ion battery
