I powered my fish finder in my Loon 126 with a Lithium 12v 7 ah battery. I managed to roll the yak and submerge the the non-waterproof case. Now the battery won't charge past 9.7 volts even after 14 hours on the battery charger. These batteries have circuit built into the battery anyone know how to reset them? The battery is a LIFEPO4 12V 7AH.