Lightweight starter batteries

[Greybrick]

I've been looking at some lightweight starter batteries to remove weight from the front end of the vehicle and these are a few of the options;

http://www.brailleauto.com/

http://www.odysseybatteries.com/battery/pc680series.htm

12V 3lb car/motorcycle battery

Keeping a battery at a warmer temperature helps maintain it's efficiency;

http://www.padheaters.com/battery_heater.html

This Lotus forum did a group buy of the 4.5 pound Voltphreaks nano-phosphate lithium batteries with good results;

http://elisetalk.com/forums/showthread.php?t=42483