"A quiet revolution in energy storage has arrived. Genasun's Lithium-Ion batteries bring the cutting-edge performance of laptops and portable phones to your boat in a package fit for the ocean. Compared to lead-acid batteries, Genasun's lithium batteries offer many advantages:"
Genasun GL-105 Lithium Benefits
* 70% Weight Reduction (save 90 pounds, 40 kilos for two batteries).
* 50% Size Reduction (two GL-105's fit in the space of one Group 31 lead-acid).
* Compatible with existing equipment and lead-acid chargers.
* More available capacity for equal amp-hour rating (less affected by deep discharges).
* Intelligent controller monitors batteries to prevent abuse and eliminate early failure.
* Non-spillable electrolyte.
* More efficient during charging.
* In pounds per dollar, or kilos per euro, one of the cheapest ways to reduce weight.
But, here's the catch - $3,000 each.