Society of Robots - Robot Forum

Electronics => Electronics => Topic started by: pomprocker on December 10, 2008, 11:29:57 AM

Title: how to choose the right battery?
Post by: pomprocker on December 10, 2008, 11:29:57 AM
Sorry, I'm still half asleep and feeling ultra lazy so i didn't feel like combing the forum for this...

How do you figure out what size battery you need?

I see some things with 6v, 7.2v, 9.6v etc.....
Title: Re: how to choose the right battery?
Post by: want2learn on December 10, 2008, 12:25:54 PM
If it's for a robot i'd say go with the voltage nearest to your motor specs. Regulate it down for your circuitry.
If it's for circuitry alone I'd still regulate it down but pick a battery closer to the total voltage required by your regulator i.e. 7.2or6.0 for NimH, 7.4 for lipo.
As for capacity, work out the total draw for your robot/cicuit and multiply it by the desired run time, Then look at capaities you can actually afford.
Title: Re: how to choose the right battery?
Post by: cooldog on December 10, 2008, 05:21:17 PM
battery caculator
http://www.societyofrobots.com/battery_calculator.shtml

energy caculator (might come in handy)
http://www.societyofrobots.com/energy_calculator.shtml

always check the main site
Title: Re: how to choose the right battery?
Post by: pomprocker on December 10, 2008, 08:50:29 PM
thanks guys!