I am planning on a 1 cubic inch robot as my next project in robotics and the biggest challenge I am facing is on the battery. Lithium polymer seems to be the best option in terms of weight and the required current output and rechargeable!
The requirement in circuit is around 400mA with 3.5V, After searching a lot in Internet I could best get to this battery which fits my dimension and voltage requirements.
But its still low on current so I plan on using them in parallel. I read that Li-ion and Lipo batteries are very sensitive and might damage the battery or cause fire if used incorrectly So I need some help on this!
Can I use them in parallel ? Is that the right and safe thing to do ?
If I use them in parallel then can I charge them to in parallel ? or do I need some special balancer circuit ?
Can somebody help me with a decent charger circuit for this cell ?
Anybody knows a better battery than this one that I can use in my application?
Any other points/suggestions that will help me on this project that I missed out ?