Quote:
Originally Posted by mark christopher
ignore the bit above about puffing and bursting into flames
the lipo will give its max, so if the speedo is needing 100amps, the pack will only deliver is 87.5 amps, very little chance of puffing or smoke as thats its rating
look for around 3600 30c or 4900 25c or above
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Your wrong there i'm afraid(Don't give advice about lipo's if you don't know what your chatting about). The pack can deliver more than it is rated at.
The rating is the safe ammount of current that the battery can deliver without damaging itself and or going below a useful voltage(voltage sag). If you pull more current from the battery then the other poster is correct there is a possibility of puffing, over heating the battery and/or damage to the cell internally.
The possibility of fire is there but you have probably got more chance winning the lottery.
What you need to know is the constant current and the peak current that your speed controller and motor combo will pull and then get a lipo that has a higher constant current rating and burst current rating than your setup.
If you treat lipo's correctly they will be one of the best purchases you make. If you abuse them there is a chance they will bite you back.
I advise you to spend a few hours reading up before you buy and watch a few of the youtube videos.
Once you get them though there is no going back.