You Reply: I was thinking of making a 18650 based pack for my panda using 2 or 4 cells
Since the cell voltage is a little under 5v (4.8 I think) I am not sure if I can run the panda with that or not.
I assume I would need to put the 4 cells in series/parallel to get a total of 9.6 then regulate it down to 5.
That way, the voltage would say at 5v longer when the cells start to discharge.
I already have a battery charge module with voltage, current and cutoff pots I can use but I am not sure how I should hook it up.
If I was using 1 or more cells in parallel, I assume I could simply run the adapter into the input (8 - 30v) then put the panda and battery in parallel on the output and set it to 4.8v?
Assuming the bat will charge up to 4.8, then stop charging and if I unplug the charger, the panda will work for a while until the voltage drops too much.
If I use the 9.6 volt method, I assume I would need a buck converter on the output going into the panda?
Or is there already a capable voltage regulator on the panda that would allow me to drive it with 9.6 directly?