but it looks like this module puts too much current for such a small battery
It can be modified but SMD Soldering is beyond my comfort zone
What are my other options ? Can i go ahead with the above combo?
The battery shield that you linked, is of a rare type because it uses a rare sized cell which is 16340, now I think this is due to the size constraints of your bot.
The similar shield for widely popular 18650 cell is available [here](’
That 2S battery holder does not have any charging and discharging support circuitry.
You have to charge them manually by other means, by removing the cells from the holder.
You don’t want to discharge the cells completely, because when lithium cells goes into deep discharge, below 2.5v, it requires different charging strategy. This is where discharge support circuity helps, it never lets cell go below a certain voltage by disconnecting the load automatically.
If you charge a deep discharged cell manually by applying 4.2 volts, it can cause it go into thermal runaway, and cause fire and explosion. A good charger will detect that the cell is deeply discharged, it will charge it the right way.
Caution - a lithium cell and a kid is involved in a project, be careful. Make sure never plug the cells in reverse polarity, it happens very often because 18650 cells are not meant to be used barebones.
Reputable kids toy never come with 18650 cells in market for a reason. They prefer much safer Ni-CD Rechargeable Batteries.
Got the bot up and running but the servo motors started to crap out the first day. The gears are slipping and I’m locking for something a bit more robust
I’m using towerpro sg90. Have ordered towerpro mg90 instead. Robu themselves say that these are 99% generics and not the genuine stuff.
