Originally Posted by
turbotoaster
this might be a good option
http://www.ebay.co.uk/itm/Liberty-Li...item2c6a412264
16ah and only weighs 2.2kg, not cheap but if its got the power to start a car it would be a nice weight saving, lithium iron is a type of lithium ion battery but looks like its the same as the £600 racing ones without the big price tag, but im not an expert on batteries.
alot of people forget about the large weight savings that can be done with batteries, trying to save grams with carbon body parts when stuff like this makes a nice cheap saving.
Only problem with small light batteries....if you have a problem and the car fails to start. How much scope do they give for cranking for long periods ?
Or how much capacity do they have for running fans whilst stationary ?
For a track car where support is nearby I can see the appeal. For a road car...I would never recommend a small battery.
I want peace of mind that my battery will work, and work for a very long time if things go wrong.
Ive been tempted many times by a race battery, but just cant bring myself to do it.