My project needs to go portable. All of the components selected are rated to work 3.3-5 volts (but not more than 5.0V). I was thinking of using a cell phone power pack as the battery. But I have not been able to find an enclosure that makes it easy to remove/replace the battery. In searching, I came across the 18650 Li-Ion cell and the TP4056 charging module (the version with the battery and load connections).
Has anyone incorporated the TP4056 and 18650 cell in to their project? Thoughts? How did it work out?
Has anyone tried to use a cell phone power pack to recharge an 18650 cell via the TP4056 module? I don't see why it wouldn't work, but then again that's why I'm asking.
Not entirely sure yet, the specs are vague. The project has a 3.3V Arduino Pro Mini with a 3.3V 16x2 LCD (both current requirements unknown) and a sensor that uses 300mW 4-7V (so about 60mA).
The project needs to run 8-9 hours minimum 18-20 hours would be a better target.
But the question is if has anyone incorporated the TP4056 and 18650 cell in to their project? How did it work out?
Has anyone tried to use a cell phone power pack to recharge an 18650 cell via the TP4056 module?
RADENITE:
The ones with the seperate load terminals has the DW01 chip to prevent over and under discharge of the li-ion cell. Cut offs 2.4 and 4.25.
If you want the Lithium battery to last and stay safe (not explode ?) you dont want to let it go as low as 2.4V, unless you plan to throw it away afterwards.
A circuit using lithium batteries needs its own cut-off and 3.3V is a far safer lower limit. There is virtually no capacity left below this voltage so it makes no sense to disharge it further.