Hey guys first time post, but I've been bowfishing for about 6 years now. I run a 1648 G3. The majority of lakes near me are electric only so I've been running 3 class 29 batteries in parallel connected to an inverter. I run an extension cord to 3 Viugreum 150's. Lately I've been getting a Max of three hours out of the lights. Shouldn't I be getting more time? Am I doing something wrong. The three batteries in parallel are 5 years old but have always been charged with a marine charger. When they died last my multimeter read 12.2 on them. Any advice would be appreciated!