![]() It supports input voltages up to 8V so it can be used directly connected to a USB port or a mobile charger up to 1.2A. Then, it gradually reduces the charging intensity until the battery is fully charged and ends the charging cycle when the charging current drops to one tenth of the programmed value. First it ensures a constant current until the LiPo battery reaches 4.2V. The module performs the charging process. Note that there is also a USB C version available. TP4056 module main components description. Although there are versions of the module that do not have these chips, in this case we will use a version that does have these elements like the one described in the image. ![]() The module also integrates two LED indicators of the state of charge and two additional chips in charge of the protection of the battery. This chip is a programmable linear current and constant voltage charger for single cell LiPo batteries. The main element of the module is the TP4056 chip itself. ![]() ![]() Luckily to make things easier for us and allow us to use a LiPo battery in our Arduino projects we have several modules that can do some of the work for us. Lithium-polymer batteries (or LiPo) are dangerous if they are incorrectly charged, overcharged, overheated or stored incorrectly they can explode. In principle, this might seem trivial, but it’s not. In the next Bike Pixels version I want to integrate a rechargeable battery so you don’t have to rely on an external power source. How to add a LiPo battery in our Arduino projects
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