Comments about Promariner Battery Bank Cable Extender - 5':
Easy to install, with my new battery charger. My only criticism of this Promariner product is that the cable-to-cable connection is not waterproof. With 2 Promariner cable extenders, both batteries have easily been brought up to "full charge" and are now just on a "trickle".
Bottom Line Yes, I would recommend this to a friend