If you're looking for service after the sale, these are the people. These guys stand behind their product like noone else.
One of the only things that can separate a battery company from the competition is their warranty. I had issues with my battery and found out that I was the first person to make a warranty claim, which speaks to the durability of the batteries. They sent me out a new one that I received the next day. Great customer service. I would highly recommend.
I RECENTLEY GOT IN TOUCH WITH ABYSS BATTERY TO INQUIRE ABOUT A PURCHASE OF  12VOLT120A TO MAKE A 24V SYSTEM TO OPERATE MY ULTREX TROLLING MOTOR WHICH RECENTLY WHILE RUNNING NEW LEAD ACIDS FOR 5 HOURS IN THE WIND DIED ON ME COSTING ME 3 HOURS OF FISHING TIME!! AS A TOURNAMENT ANGLER THAT JUST IS UNACCEPTABLE! SO, AFTER ALL MY QUESTIONS WERE ANSWERED I DECICIDED TO PULL THE TRIGGER AND MAKE THE PURCHASE ! AFTER ONLY A FEW DAYS I RECIEVED MY 2 NEW ABYSS BATTERIES AND INSTALLED THEM INTO MY RANGER BASS BOAT ! IVE ONLY HAD THE BOAT OUT 4 DAYS SINCE PURCHASE AND I WILL SAY IM REALLY IMPRESSED I FISHED IN 12 MPH WINDS FOR 10 HOURS CAME INTO CHARGE AND THEY WERE STILL AT 60% UNBELIEVEABLE THUS FAR !!! VERY PLEASED CUSTOMER! JIMMY SCHAFFER [BASS TOURNAMENT ANGLER]
So far the batteries have been amazing
Man I can not say enough about Abyss Battery, the single cranking/house 120AH battery was at 54%. The battery was never put on charge all weekend!!! That's three days of hard fishing running 3 units, live scope, all pumps, all lights and starting engine.
The trolling motor battery was never charged either and ran strong all three days as well.