This module is made for charging rechargeable lithium batteries using the constant-current/constant-voltage (CC/CV) charging method, and comes with necessary safety features.
This module uses the TP4056 Li-Ion charge controller IC and a separate protection IC. There are other types of modules on the market that use the TP4056 but lack any protection circuits to provide the necessary protection needed with lithium batteries.
Modules with the protective features can be recognized by the chips soldered to the board: There are 2 additional chips besides the TP4056 charging controller; the DW01A Li-Ion battery protection IC, and the dual power MOSFET battery disconnect switch 8205A. This setup provides the following features: – Manages C-C and C-V charging of lithium batteries – Over-discharge protection – Overcharge protection – Overcurrent and short-circuit protection – Soft-start limits inrush current – Trickle charge (battery reconditioning) with 130mA The charger can be powered from a micro USB cable or the IN+ and IN- connections. The power source needs to be able to provide at least 1A for the charger to correctly charge a connected battery. Most modern phone/USB chargers can provide 1A or more; refer to the label on your phone charger to verify. If you use the micro USB connection, be sure to use a USB cable that is made to carry at least 1A. Furthermore, the board includes two indicator LEDs to indicate charging and charge termination (complete). The charge current is preset to 1A, what is the optimum to safely charge batteries with capacities of 1.4 to 5 Ah. The module itself needs only some micro amps whenever it is connected to a battery. It is fine to leave the battery connected for long periods, but it can drain the battery after a couple of months. We recommend disconnecting the module from the battery when not in use for several months.
Available with Micro-USB port as well (see our other products).