Batteries

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Jarubell
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Joined: Dec 25th, 2015, 7:09 pm
Location: Dartmouth/ Big Tancook Island, NS, Canada

Batteries

Post by Jarubell »

I did not expect this question to be my first post (I have many questions, pressure transmitters, thrusters, cameras, communication, other sensor, etc!) but I find myself currently looking for Battery options.

I see Lipos, what does the C mean in eg'5000mAh 4S 30C'?

What other battery options are there?

How about rechargeable sealed lead acid batteries?

Jarubell
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olegodo
Posts: 222
Joined: Aug 30th, 2013, 9:47 am
Location: Bergen, Norway

Re: Batteries

Post by olegodo »

The C rating defines how much current that battery can deliver safely.

In your example:
5000mah is the same as 5AH. Don't know why they use mAH for these, but they do. So mAH devided by 1000 gives you ampere hours.
5Ah x 30C = 150 amps
If the battery had 20C it would "only" deliver 100amps.

I would not trust this 100% though. some cheap batteries might not be able to deliver what it claims.

Li-ion batteries would be a good alternative. they should be safer and still be light. Price will be higher.

Led acid I don't really know about. Easy to find and cheap, but heavy and bulky?
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