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Author Topic: Battery Chargers  (Read 1372 times)
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« on: January 05, 2013, 07:00:49 PM »

I currently have 3 x 250AH batteries and require a new charger to be ran off a 5 KVA Generator for when we have no sun. Is there a maximum charge output I should not exceed or is the 20 Amp charger off the Navitron website sufficient for the job? Many thanks.
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« Reply #1 on: January 05, 2013, 07:31:44 PM »

In your situation I would want a charger far bigger than 20 amps.

I have a 5kw genny & my charger is 120 amps & I often run a 50 amp as well. I am looking at upping it to more like 200amps.

With your size of battery bank I would be looking in the 50-150 amp range.

Get a good 3 stage charger not a car charger.

Obviously it does all depend on how much you are actually using your system too. If your loads are very small then a smaller genny might be a better solution to go with a smaller charger.

Navitron solar thermal system
30 x 58mm panel 259L TS
1200watts solar 120vdc
FX80 Solar controller
2 x Victron Multiplus II 48/5000/70
Cerbo GX & GX 50 touch
BMV 700
6kva genny
48v 1000ah
Grid Possibly coming soon
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« Reply #2 on: January 06, 2013, 07:25:44 AM »

Some batteries specify a maximum charging current during bulk.  You'll have to check the manual for your batts to find out.
2.8kW PV, SMA Sunny Island 5048, 5 PzS 700 battery bank, stinky diesel.
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