KA Power 12V 86kj 12 CELL

KA Power 12V 86 kj 12 Cell Supercapacitor (19.44 x 7.75 x 8''', 34.5 lbs) for single start engines up to 15L. Recommended on constantly connected system. 

They are easy to install and designed to exceed 1000 cycles, typically outliving the boats life. It's like having an emergency battery permanently on standby without any of the maintenance an actual battery requires. The supercapacitor replace the large starting battery bank, reducing weight and footprint in the engine room.

KAPower Supercapacitors Starting Module

KAPower Supercapacitors more info