Post
by ICMF » Tue Apr 11, 2017 1:14 pm
Since I've been researching power banks for my build, a couple of thoughts:
If you want to keep the board, you need to make sure it can do passthrough (draw an input charge while outputting charge to the device). A lot of power banks don't; they cut output as soon as the input gets plugged in.
If it does passthrough, make sure it can input more charge than it outputs. Doesn't do a lot of good if it recharges at 1A but your device is consuming 2A.
Looks like the battery itself has a charge protection circuit on it. Which is good; a lot of power bank batteries don't. In that case, I'd be inclined to ditch the power bank's recharge circuit and attach it to a powerboost instead. I probably wouldn't trust the bank's integrated charge circuit to be very good; the powerboost is a known quantity and works well, so it would probably be simpler and less frustrating to plug the battery into that, rather than trying to make the included board work for you.
DIYing parallel lipo circuits is generally frowned upon. Pretty much everything I've ever seen has said, unless you absolutely know what you're doing, buy a bigger battery if you need higher capacity; don't wire multiple lipos. So if you do use these, don't try to squeeze two of them in the case.