Mixed batteries on solar charge during layup

[nmccubbin]

We are about to lay Milvina up for 6 months on the hard in Rio Dulce
We have a 150 watt panel, with Morningstar controller
We have 6 T105s making 3 parallel 12 volt houses batteries
Separately, two identical high CCA sealed lead acid batteries in parallel for the bow thruster and engine start

In the past, we left the 6 house batteries on the solar panel, and set up a tiny panel to maintain the 2 CCA batteries
Worked OK on the house, but not on the CCA

What do you experts think about simply hooking the CCA batteries in parallel with the house batteries, all being charged by the Morningstar controller?

[Hartleyg]

In terms of the charging voltages, you'll be fine. My worry would be ONE bad cell pulling the entire setup to oblivion over 6 months.
If your "CCA" batteries can't make it even with a small panel, they must have a significant self-discharge already, making them even more dubious, IMHO.

Hartley
S/V Atsa