Re: Location of the battery bank on an older Super Maramu
Hi Mark and Nicky,
The early SM’s had only 4 house batteries and these were located in a smallish battery box against the forward bulkhead of the engine bay. We have 1989 SM007 which was extensively refitted before we undertook our RTW. During the refit, we copied the early SM2k and installed 8 X 100 Ah batteries into a fabricated box under the passage way bunk. Additionally, we kept the start battery in the engine bay and raised its capacity to 1100CCA. The cables for the house batteries were routed via a watertight branch out just aft of the bulkhead forming the gangway. If you go for lithium, I expect you’ll only need a total of 600Amps given they recharge so quickly so the area under the bunk will have room to spare. You may also want the engine battery relocated there as well as MPPT controller etc… We have a 3Kw inverter as well and an induction cook top plus an Ocean Chef 3 gas hob/cook top. (The aim was to increase redundancy and reliability). (Be warned… this was expensive and lots of work….)
We modified the main engine alternator and installed a smart controller, added 2 new 2460 Victron house battery chargers with smart controllers, Victron 712 battery monitor. Add 3 X 150 A solar panels with a Victron MPPT controller and we were done. Works perfectly after 5 years of 24/7 live aboard. We are pleased.
Best of luck but if I may suggest, stick to a tried and proven Amel solution… like we did. Resale value will be adversely affected otherwise.
Jean-Pierre Germain, SY Eleuthera, SM 007, Opua NZ