Battery charging

T

TK Blue MAX

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Hi all, new poster after some advice please, I have six x 110hr batterys fed from a MASTERVOLT charger ,in the past winters i have left shorepower on to run dehumidifiers and heaters but have allways left battery charger turned off ,most likely a hang up to not fry batterys on old chargers,but have been told to leave charger on continually , can any one advise which is best and why,thanks

Tony
 
I leave my 'Newmar' charger on - without any issues. I assume your Mastervolt charger is similar and cuts out as necessary to maintain the batteries.
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I have a mastervolt charger and leave it on most of the time , I believe they are designed to be left on all the time .
 
I disconnect my charger when I am away from my boat. I had a "thermal incident" with a battery in the summer, when one battery failed, and the temperature started to run away. This would have exploded if I had not disconnected my charger.
 
Yes it does . If you turn it off then back on it will start with a bulk charge then gradually reduce down to a trickle charge as the batteries reach their fully charged voltage . The chargers for our forklift trucks at work do exactly the same .
 
rafiki_ said:
I disconnect my charger when I am away from my boat. I had a "thermal incident" with a battery in the summer, when one battery failed, and the temperature started to run away. This would have exploded if I had not disconnected my charger.
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+1 I used to keep mine on all the time but having had the same issue as Rafiki 2 yrs ago I disconnect the charger if away from the boat in longer periods. Thing is you do not know when one of the batteries decide its time to go.
 
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Thanks for your reply's. I must admit I'm still unsure what to do for the best. I am also worried about a battery failing and over heating as only 1 battery has a temperature sensor to the mastervolt. does anyone know whether the charger will sense a failed battery and shut its self down or will it continue pumping full charge into them all?
 
I used to leave oem 'christec' battery charger on all times (boat is always on shore power), but the start and house batteries both required regular topping up every 4-6 weeks. This seemed excessive, as the two additional Trojan house batteries connected to Victron charger don't much water at all (not oem installed).

I now leave the Cristec switched off but leave Victron on. When I arrive for weekend on boat I switch on Christec to fully charge start and house batteries over the weekend. I made the change to charging three months ago and haven't had to top up since.
 
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