Pro’s Con's
Alkaline:
Will power IR Receiver module Not rechargeable
Batteries will need replacing
NiMh:
Rechargable Will not be able to power IR Receiver module
Will fit in stock battery compartment with minor modifications The Bug will move a bit slower
Good match to small solar cells Low capacity
Li-Ion:
Rechargeable Will not fit in the stock battery compartment; special mounting required
High capacity Charging must be carefully monitored
The Bug will move a bit faster Discharge must not go below 3.0 volts or cell will be permanently damaged
Will power IR Receiver module
Good choice for charging station