Solar charge 2s 18650

Thread Starter

panban

Joined Sep 10, 2021
2
Good day to all members.
While there's a similar thread here not a definite answer on it.
I want to power an Rpi4 of the grid that will run with a 2 series 18650 through a power management board.

Now in my inventory i have a 10w polycrystaline solar panel with 18-20v output. While i tried and fried a TP5100 charger IC (inpu5-15v) before a hx-2s-jh20 BMS and the batteries.

I was thinking to use a CN3722 MPPT if fits for the purpose or a pull down between the solar panel and a TP5100 to lower the input voltage

Has anyone a practical experience on the matter to share?
 

Thread Starter

panban

Joined Sep 10, 2021
2
Thanks for the reply. Sticker on the back says about 0.55amps.
Also i fried one tp5100 board yesterday as it inputs 5-15v. My panel outputs up to 24 in direct sunlight fast.
 
Top