How are you powering your thrusters?

Hello ladies and gentlemen,

I was curious. What are some of the ways are you providing power to your thrusters? Automotive batteries, UPS batteries or something different. I’m in the designing stages of an ROV and just wondering what some more experienced builders suggest.

Thanks for any replies.

For the amount of size, weight and power density, LiPo batteries really rock.

+1 with what Harold said.

Well LiPo it is. Thanks for the replies.