12 volt lithium batteries

[Aquaholic]

Has anyone used these? I would like to try 2 lithium marine deep cycle batteries to save weight in a smaller boat. Maybe even a 3rd for engine battery. Can lithium batteries last as long and handle the beating like lead batteries?

 

[lunkerslayer]

I bought 2 batteries last fall in a group buy from dakota batteries, i can run all week and it still never leaves 13 volts also it's 2 pounds lighter then the lead sla.
15 volts is the max which can only be done with a lithium battery charger.
Of course these are only sla battery 12 10amp
But yes lithium battery is a great investment