Battery Charger

9 Posts
Sep 25, 2008 03:17 am
Battery Charger

I have a load of 900watts on a 1500 inverter/charger i have 5 12V 150Ah battery connected in parallel giving 12V 750Ah. The charger in the inverter is not powerful enough to charge the batteries can any one tell me how to size for a battery charger to charge a deep cycle battery for about 6-8 hours and hour do i connect the inverter/charger to the external charger. This is a grid-tie back up system.
 
184 Posts
Sep 25, 2008 10:38 am
Re: Battery Charger

Check out the IOTA battery charger line.  They have chargers with different current ratings, from 15 amps up to 90 amps.  Which one would be the best for you?  I think that would depend upon the type of batteries you have. 
 
578 Posts
Sep 25, 2008 10:46 am
Re: Battery Charger

what inverter do you have?  I am not aware of any grid tie battery backup inverters at 12v nominal.  just curious?

regarding the batteries and the charger, you batteries probably do not want to be charged faster than a C/10 rate, but if you insisted, you would be looking at something like this

http://store.altenergystore.com/Charge-Controllers/AC-Charge-Controllers/IOTA-Dls-90-90A12V-2Stg-Ac-Charge-Controller/p700/

james
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351 Posts
Sep 25, 2008 01:13 pm
Re: Battery Charger

James:
I believe that Smith is located in Nigeria, and would need a 230V/50H 12vdc charger.
I would guess his inverter to be a Xantrex CR1512E or equivalent. Grid backup, not tie.
Those batteries are being pushed real hard already.

Ken
 
578 Posts
Sep 26, 2008 12:00 pm
Re: Battery Charger

ahhh, that makes more sense. 

these units can do 50 or 60hz which is cool, but i dont know that it can charge any faster than a CR or DR.  dont remember of the top of my head what size ac charger is in them.

http://store.altenergystore.com/Charge-Controllers/AC-Charge-Controllers/Samlex-12V30A-3STG-AC-BATTERY-CHARGER/p1053/

james
altE staff

AltE
"Making Renewable Do-able"
http://www.altEstore.com/

Tel: 877.878.4060 x107  or +1.978.562.5858 x107
Fax: 877.242.6718  or +1.978.562.5854
 

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