markpj23
Senior Member
- Joined
- Mar 25, 2021
- Messages
- 201
- Vessel Name
- Black Horse
- Vessel Make
- Med Yachts 62
I have two 12v Lithium batteries (not LiFePO) in series to power the 24v windlass & bow thruster. The charger and batteries are no more than 5 years old, installed by PO.
The battery charger is a Mastervolt 24/40-3. I have verified AC power to the charger but have dead (reading 8v on the bus) batteries. Since this model charger was designed without Lithium / LiFePO charge profiles, I assume that it was setup to use just the AGM charging profile (I need to verify DIP switch settings but AGM / FLA are the only 2 available per the manual).
The Mastervolt display will flash like the dashboard of a car when you first start it up, then go blank. It will do this about once per second for 10 seconds, then quit altogether. The green power switch light never comes on.
For their cost and reputation, there is not a lot of troubleshooting or repair info available online. And of course you have to call one of their local service dealers for any help.
Wondering if anyone has dealt with this problem before? Tricks to get this thing to reset? Or wondering if I just junk it and get a different unit? The 24/40-3 series is of course no longer sold.
Thanks in advance.
The battery charger is a Mastervolt 24/40-3. I have verified AC power to the charger but have dead (reading 8v on the bus) batteries. Since this model charger was designed without Lithium / LiFePO charge profiles, I assume that it was setup to use just the AGM charging profile (I need to verify DIP switch settings but AGM / FLA are the only 2 available per the manual).
The Mastervolt display will flash like the dashboard of a car when you first start it up, then go blank. It will do this about once per second for 10 seconds, then quit altogether. The green power switch light never comes on.
For their cost and reputation, there is not a lot of troubleshooting or repair info available online. And of course you have to call one of their local service dealers for any help.
Wondering if anyone has dealt with this problem before? Tricks to get this thing to reset? Or wondering if I just junk it and get a different unit? The 24/40-3 series is of course no longer sold.
Thanks in advance.
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