Hi all. I’m in the final part of my project where i will be monitoring the water level of a tank and send data over rf back home. This tank is to far away from mains power zo i’ll be powering the arduino with a little solar panel.
Now my question is wich of these two charging modules would be the best for charging a single Lithium 18650 battery?
The second o have is this one:
5 pcs Micro USB 5V 1A 18650 TP4056 Lithium Battery Charger Module Charging Board With Protection Dual Functions 1A Li-ion
For powering the arduino i’ll use a separate module. I tried the first module to charge the batterij en power the arduino at the same time but it has a cut of function to avoid draining your battery if the power consumption is below a certain level and the arduino usage is below that.
Second question is, should i put a diode between the solar panel and the charge controller to avoid “frying” the solar panel? Not even sure f that is possible.