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Old 15-11-2014, 03:40   #1
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disconnecting battery charging

Hi,
A quick question, I want to check the battery fluid level so I need to disconnect the solar and shore power charge for a few hours. Whats the best practice?
Just remove the main negative battery terminal?
Thanks,
Monte

Edit : on second thought id like to discharge the batteries a bit first I guess? So whats the best way to disconnect solar charging, remove the fuse? its a victron 150/85 MPPT controller...
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Old 15-11-2014, 05:05   #2
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Re: disconnecting battery charging

I trip the breaker I have between the controller and the battery, but to be honest, I don t know if this best practice.

Or check the battery at night.
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Old 15-11-2014, 06:04   #3
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Re: disconnecting battery charging

Best bet is to cut the circuit before the controller....ie disconnect the solar from the regulator. The regulators really don't like not having anyplace to put the current supplied by the solar.


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Old 15-11-2014, 06:16   #4
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Re: disconnecting battery charging

Quote:
Originally Posted by monte View Post
A quick question, I want to check the battery fluid level so I need to disconnect the solar and shore power charge for a few hours.
why? I check the water level with the batteries connected
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Old 15-11-2014, 06:55   #5
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Re: disconnecting battery charging

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Originally Posted by sailorboy1 View Post
why? I check the water level with the batteries connected

I was going to ask the same thing but probably don't want to know.


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Old 15-11-2014, 07:10   #6
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Re: disconnecting battery charging

There’s no real need to turn off all charging sources to check electrolyte levels.
Preferably, water your batteries after giving them a full charge, as watering before charging may result in electrolyte overflow.
Before you check the water levels, clean any dirt or debris from the top of the battery and around the battery terminals.
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Old 15-11-2014, 13:58   #7
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Re: disconnecting battery charging

Usually a good idea to check the SG at the same time, that's why I disconnect the charge sources and leave it a couple of hours.
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Old 15-11-2014, 15:34   #8
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Re: disconnecting battery charging

Yes Nigel, thats what I normally do as well, and thanks guys, I disconnected the solar by removing the fuse.
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