High capacity battery for lighting systems

[shemozzle999]

LiFeYPO4 (LiFePO4) 60Ah 3.2v battery cells with incredible life and current | eBay

 

[tillson]

I'd rather use the bike's battery. The latest Cree T6 LEDs use very power and have no significant affect on range. These cells weigh in at 2.3 Kg each, which is too much for lighting. They might be useful for other applications though.