replacing rolls 450 ah battery set

petertearai

Hi . 
My 450 ah rolls batterys are near end of life . 24 volt system .
Suggestions ?  . 
Ive discounted lithium . so another wet cell set  Trojan or Hella endurant , 
Gell  , silicon , Carbon  
Rolls are nearing 8 years, but cant get rolls again in Newzealand

mcgivor

Check with Trojan if the SIND line is available in New Zealand , they are designed for solar use, only thing I can see is a lower SG than their traction type batteries, but good to see charging rate and absorbtion hours stated, unlike many with charging rates based on grid charging. Flooded are always the  better choice, In my opinion.

Estragon

+1 on plain FLA. As well as trojans, I think US battery and other big outfits have NZ distibution.

BB.

If you have a good supply of "cheap" distilled water and can possibly add some solar panels (10-30% more--Depends on your current power usage, battery bank, array size, etc.), you might look at forklift/traction batteries.

Some issues with forklift batteries tend to include

• higher charging voltages (16/32/64 volts) which can be an issue for some inverters and battery chargers.
  
• Higher distilled water usage (and smaller reservoir in cells means checking levels more often).
  
• And that one battery can way 1/2 to 1+ ton very easily (need crane/concrete floor/lift gate/loading dock to move).
  
• Need a larger solar array because charging forklift batteries tends to be less efficient/higher self discharge rates.

The individual cells in many FL batteries are replaceable--A few folks have gotten used batteries, replaced a couple bad cells, and then used for many more years.

-Bill

petertearai

Thanks for replys . will check out if the trojan snd06610 is available here . thanks for the link . the specs certainly look good . good to see the cycle / depth of charge curve . looks impressive.
Bill thanks for the info about fork lift battery's ... but to get more pv id need another charge controller and not keen on the weights.
And also thanks to you for your input on this site I certainly appreciate it ..
of course thanks to other contributers .

WaterWheel

I can't find the warranty listed on Trojan's warranty page.      Does anybody know what the warranty is?

Estragon

According to NAWS (L16RE), it's 2yrs replacement & 5yrs prorated for 7yrs total.

WaterWheel

thanks

Estragon

Note the Trojan industrial line has a slightly longer warranty - 3 years replacement for 8 total.

petertearai

hi . checked out the Trojan solar snd they dont bring them into NZ .pity as they look like a good battery by the specs .

mcgivor

Here is a supplier who sells Hoppecke batteries in New Zealand, they are supposed to be an excellent product 
http://s4solar.co.nz/products/hoppecke_batteries/

petertearai

yep the hoppecke battery's look good . had a quote on set of 2 volt batterys. more than I would like to pay.. still often you get what you pay for.
Thanks for suggestions .