Battery size for electric motor

[Nikanit]

Hi guys,
We are about to buy a couple more deep cycle batteries for our electric motors for the one man pontoon boats. I am very tired of the big ***** battery and the weight of it on my boat. Are there batteries much lighter that will perform as well?

[huntsfurfish]

Not without going to lithium. Which are expensive, looking at $1000+USD per battery.

edit: Other option is to downsize your batteries but wont run as long.

edit x2: Oops forgot about AGM's. as mentioned below.

[Mr Flyguy]

Walmart used to carry an Energizer AGM deep cycle battery for ~$100

Much smaller and lighter than the others, e.g. Nautilus AGM which I am now using, but I used one in my canoe for 4 years. Had to recharge after every outing 'cause capacity is relatively low.

[Bigwoodsman]

I've been wondering about this myself. Does anyone use a solar panel to charge a battery while out on the water? Or is is worth while to attempt this method of re-charging or maintaining a battery?

BW

[dodgeboy1979]

solar wont keep up to your demands on the water. They are a good trickle at best for what you could mount on a boat.

[bobalong]

Not familiar with the big lithium batteries but the heavier the battery the bigger the plates and more weight.

Series 27 about 160 min reserve
Series 29 about 180 min reserve
Series 31 about 200 min reserve