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Hello Everyone, I just bought a 2013 Monterey and I have a problem and I am looked everywhere in the manual and changed both batteries to be on the safe side. The problem is that while in the sea and when I switch off the engine and after 30 seconds all electricity shuts down (lights, fridge, stereo..etc) while it should switch to the house battery automatically. Can anyone advise what this might be??!!

​I just received my boat back from storage and the cables where off the terminals. I am trying to make sure I put them back correctly on the positive and negative terminals. The one that has me stumped is a red cable coming from the 40 amp circuit breaker. I am assuming it goes to the positive terminal but there is a tag on the wire that says batt neg. Does it go to the positive or negative terminal? Any pictures of other peoples batteries would be of great help here. Thanks

I am having an electrical issue w/ low batteries and have recently replaced the battery charger as this tested defective. I suspect the batteries have been damaged due to the lack of charging, however, want ensure there's nothing more serious. I am currently experiencing the following: 1. Low voltage on both Port (12.4V) and Stb (12.5V) batteries when disconnected from shore power, 13.2V on generator battery - even after charging for a week. 2. Port & stb batteries are sufficient to start engines. 3. Electric Fault notifications on EVC on both engines immediately after starting engines. Not sufficient power to run any electronics consistently. GPS/Nav will flicker on, then re-start, etc. Some gauges not working at all (fuel guage, etc). I was going to simply replace all 3 batteries - believing all these errors are due to insufficient battery conditions. However, shouldn't the alternators be powering all the electronics sufficiently when running motors (at least at full power)? Or do they still require sound batteries? Is there a way to test the alternators (I have Volvo Penta D3-160 Diesels). I have run my Generator while underway - which keeps the electronics going for about 45 minutes, but then the Electric Fault notifications return and all electronics fail again. Appreciate any input.

I am having an electrical issue w/ low batteries and have recently replaced the battery charger as this tested defective. I suspect the batteries have been damaged due to the lack of charging, however, want ensure there's nothing more serious. I am currently experiencing the following: 1. Low voltage on both Port (12.4V) and Stb (12.5V) batteries when disconnected from shore power, 13.2V on generator battery - even after charging for a week. 2. Port & stb batteries are sufficient to start engines. 3. Electric Fault notifications on both engines immediately after starting engines. Not sufficient power to run any electronics. GPS/Nav will flicker on, then re-start, etc. Some gauges not working at all (fuel guage, etc). I was going to simply replace all 3 batteries - believing all these errors are due to insufficient battery conditions. However, shouldn't the alternators be powering all the electronics sufficiently when running motors (at least at full power)? Or do they still require sound batteries? Is there a way to test the alternators (I have Volvo Penta D3-160 Diesels). I have run my Generator while underway - which keeps the electronics going for about 45 minutes, but then the Electric Fault notifications return and all electronics fail again. Appreciate any input.