Battery Experts?

[Knock-on]

I'm looking for a 12v Battery / Batteries to power a small electric outboard.

 

Current 88Ah Lead Calcium batteries weigh about 18kg which in a small inflatable is quite a lot so I'm looking for a lightweight option such as Lithium ion or Polymer units without paying mega bucks.

 

Any ideas chaps?

[fry61]

!8kg will only need 18 litre displacement (4 gallons ) so requires only 2/3 of a cubic foot of boat buoyancy -- your lunch bag is probably bigger.