Our boat was in charter until a few days ago, and as an owner and user, I recognise many of the problems identified. We wanted to fit solar
from the start of ownership
but were dissuaded by the company on the grounds of complexity (for them) and possibilty of physical damage to the panels
. They were also not keen on additional complexity in the charging
system, first diagnosing problems and then the supply chain to repair or replace defective bits. You have to realise that there is a very extensive supply chain required to service
huge numbers of charter boats. Virtually any defect or damage can be and has to be fixed in less than 12 hours.
Having said that, our house bank is 3 off 110 Ah sealed leisure batterries, and that lasted 4 years despite the use and abuse of intensive chartering 6 months of the year, which I think is pretty good going. That set up allowed us to stay at anchor
for up to 2 days with fridge, lights etc without goung below 50%. I would suggest that the OP has either a fridge, battery or useage problen if his much larger battery bank could not cope.
Over the last few days, we have fitted 480W of solar
, the new Outback FM 40 controller and replaced the batteries again with sealed leisure batteries. I know these are certainly not the best battery technology or capacity, but we needed sealed and was not prepared to fit AGM
based on MainSails excellent website. It will be interesting to see how long they last.
As I write this in Croatia
at 0730, the sun is about 10 degrees altitude and over 6A is going into the batteries, making a lot of hard work worthwhile!