12v + 12V 2A Transformer 24V 2A Transformer

The TP4056 1A Li-Ion Lithium Battery Charging Module – Type C USB is a 3.7V lithium battery charger module has onboard Micro USB interface. With Type C USB onboard connector, you can directly connect to computer USB port for battery charging. If USB is not available you can use an external source voltage at IN+/IN- pads, great for DIY projects. It is small size and lightweight.
TP4056 Other features include the current monitor, under-voltage lockout, automatic recharge, and two status pin to indicate charge termination and the presence of an input voltage.