Battery upgrade

Published date: December 1, 2019
  • Boat Type: Boat Type

I moved the original battery into the v-berth storage area and added a starter and an additional house battery. On the '99 Mac 26X models the area around the vent hole and splashguard is not level. I first installed a 2x4 on its edge along the aft part of this area. Next I cemented and screwed a 3/8" plywood floor to the fiberglass and 2x4. I placed the batteries on top of this platform in the configuration shown in the larger picture using notched blocks of wood to hold the batteries in place. E1 is the starter battery and H1 and H2 are the deep cycle house batteries. H2 is the original battery at about 85 amp-hours (my estimate based on size). The one I added, H1, is 115 amp-hours for a total of 200 amp-hrs. (I plan to add covers for the positive battery posts.) I mounted a plywood panel to the bulkhead behind the splash guard for mounting 3 on-off battery switches, fuses (60 amp main distribution and 200 amp for inverter) and a West Marine battery combiner. The lower part of the picture shows the batteries at an angle thru the storage area under the forward dinette seat. In this picture you can see portions of all three batteries and the common grounding post. I used 4 gauge welding cable to carry the current to the engine and 10 gauge to the DC distribution panel.

Published by: MS Classifieds


Model Year: 1999

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