Navitron Renewable Energy and Sustainability Forum

Energy/Electricity Storage and Use/Grid Connection => Off-Grid, Batteries & Inverters => Topic started by: DARREN.TRACI on January 05, 2013, 07:00:49 PM

Title: Battery Chargers
Post by: DARREN.TRACI 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.

Title: Re: Battery Chargers
Post by: Justme 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.

Title: Re: Battery Chargers
Post by: stephendv 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.