Will these solarpanels charge a 48 volt batterybank Help Needed

[Windmill1]

Hello to all
I have no experience with solar panels. I am looking at 2 240 watt, Suniva Poly MVP series, voltage max 29.61. current max 8.14            .open circuit voltage 37.03, short circuit current 8.83. I have 4 big 12 volt caterpillar industrial batteries in my 48 volt system. There is no capacity information on the batteries.
Will these 2 panels wired in series charge a 48 volt batterybank
Any input is appreciated.
Thanks,
Ray

[birdhouse]

in short i'd say yes! 

they may not equalize the bank very well in hot conditions, but they will be matched very well for bulk charging with a non mppt type charge controller.

equalize of a 48v bank may require upwards of 60v.  theses panels start to taper off amps as the voltage gets that high.  but even then, it doesn't take many amps to hit equalize once the batteries hit float anyways. 

if the price is right, i'd say jump on it.  what is the price?

adam 

[Windmill1]

Thanks
Price is $569.oo for 2 panels on ebay, with free shipping.

[dnix71]

http://www.ebay.com/sch/?_nkw=240%20watt,%20Suniva%20Poly%20MVP&clk_rvr_id=457124720002

That's insanely cheap. $1.185/watt delivered. I wonder what the catch is?

[tecker]

Did a quick search on the batteries . I'm assuming you Picked up some of these used . Which ones do you have .
http://www.cat.com/cda/files/3049510/7/PEHJ0073-02.pdf

 the newer batteries are made in Peoria .Ill by Firefly a Cat partner.

Looks like  the panels and cell are made at the plant in  Norcross Ga .About 16 miles across town . I'll check them out . but you should be good on the warranty . But i'll see where they stand . Free Shipping is Good
 Helios is also Us in . Both talk about mono crystalline Cells   
http://www.heliossolarworks.com/

 

[Windmill1]

Part # is 9x9730,picked these up used,do not know if they are deep cycle,most likely not. But they hold up real well. Probably will not stand a lot of abuse. Thanks for taking time to help.

[tecker]

I'm glad you posted the Norcross Co is a good break for me I'll check them out for what install Certs they need Thanks

[Windmill1]

Thanks for input to all, very helpful.
Ray

[oztules]

Dnix71, "That's insanely cheap. $1.185/watt delivered. I wonder what the catch is?"

I find that a bit odd that in the USA, panel prices are so dear??

I can land  on a remote island tuv cec ul ( with ISO certs) approved panels for $1.00 a watt.... and thats without a haggle.

This involves a courier from warehouse to Melbourne (Victoria)  wharves then  shipped to  Tasmania (Devonport) via a big ship, then courier to Bridport Tasmania, then a small ship to Flinders Island......takes a few weeks though...

I had expected you folks would do a whole lot better then me in these circumstances..... is this really as good as it gets over there?

Thinking about this now, a single panel would probably be more, but for 1kw and up this is usual.


................oztules

[gww]

I paid $0.92 per watt for 235 watt panels delivered off of ebay and they have even cheeper ones.  There is a post on this forum with several links to pv retailer that isn't too old.

http://www.fieldlines.com/index.php/topic,147440.0.html

gww

[tecker]

I'm digging into the Suniva  Process . They boost 19 % .  They developed the Process at Georgia Tech Not much in the literature I may have to buy a panel to check out . They are moving products through distributors but I haven't call everyone in the Company , and frankly I bought some cells from another distributor .