# 14watt 6v solar panel feeding to a TP4056 based charger for charging a Li-ion battery

How to design a solar power based power supply for charging a Li-ion Battery of 3.7v 3500mAh, using TP4056 ?

Specs about Tp4056 based charger using are it is programed for 1.2A current max, and 4.2v constant voltage charging,

A 6v 14watt solar panel to 4056 based charger to charge the Li-ion battey could be feeded?

Will it damage the 4056 based charger?

As the max current produced can reach above 2A.

Our Intention is to provide maximum current available to charge the battery enough and rapidly.

How does the Open circuit voltage of the solar panel affects the 4056 charger? whose operating voltage is 5v to 6v.

The current will be limited by the charger. The maximum current you could achieve is 1 A (for $R_\mathrm{prog} = 1.2k$).