Our Battery Bank Modification (Photo Below)
We changed from standard 315 amp hours to 650 amp hours.(AGM Batteries)
Shut off charging power and 12 V power
Unhooked connection on top of batteries only
Took off the front lip to the battery box
Slid the batteries out from the left side
Undid bolts from bottom that attached the battery case to the shelf
Cut the port side of the battery case off
Pushed the the case over to the right
Used the cut portion of the case as a bottom for new area on the left.
Secured the modified battery case to the shelf from underneath.
Slid in 5 AGM
batteries (130 AH each).
Put in a piece of treated timber (2x4) about12 inches long behind the two batteries on the port side as they do not have the case behind them.
Reconnected the batteries.
Install Lip on Front (yet to do)
Install some Shelf Strengthing (yet to do)
We paid $290 AU per battery here in Cairns at Casey's Battery Centre
The switches are still easily accessable.
The batteries were 30 KG each so by adding two more batteries (was 3 now 5) we have increased the weight on the port side, but in looking at the water
line, there is no change. Boat is still even on the waterline.
Now we should be able to collect all the power from out two solar panels
Photos 1 Before, 2 After from different angles.