12V 160AH EXPEDITION GEL LEAD CARBON ULTRA DEEP CYCLE  BATTERY  (EXP12-160C) DC-C series lead-carbon batteries use functional activated carbon and graphene as carbon materials, which are added to the negative plate of the battery to make lead carbon batteries have the advantages of both lead-acid batteries and super capacitors. It not only improves the ability of rapid charge and discharge, but also greatly prolongs the battery life, more than 1500 cycles at 50%DOD. Scientists and researchers in electrochemical energy storage learned that by adding a small amount of carbon to the traditional GEL lead-acid battery, that they can significantly increase the lifespan of the lead carbon battery allowing more recharge cycles . This eliminates or greatly reduces the crystallization from taking place within the Lead Carbon Batteries Lead Carbon Gel batteries are true  deep cycle and can completely re-charge from 4 to 10 times faster than regular lead acid batteries Features 99% high pur