#Universal battery charger how to

Following is an explaination on how to power the charger, load a battery into the charger, and charge it. With the help of an adjustable contact set, this charger is able to charge nearly all common Li-ion rechargeable battery packs. The charger framed here is a $1 Chinese product available under different brand names.

Since Lithium is a highly reactive material (incorrect charging of a modern Li-ion cell can cause permanent damage, or worse, instability and potential danger), Li-ion batteries need to be charged following a carefully controlled constant current/constant voltage regime that is unique to this cell chemistry.

Lithium-ion (Li-ion) batteries have become popular for portable electronics such as smart phones because they boast the highest energy density of any commercial battery technology. Lithium-ion Battery & Lithium-ion Battery Charger This article, packed with teardown details of a Li-ion Universal Battery Charger, is a humble effort in this direction, and is a result of a number of experiments conducted from time to time. Such knowledge can aid understanding of how the system works, including innovative design features, and can facilitate reverse engineering process of the circuitry. Outcome of a product teardown can be used by hobbyists/makers to find out what components are being utilized in the electronic product.