UPS, PWM Sine wave or True Sine wave

[theokie]

So I really don't consider this DIY, as it's just hooking batteries up, but didn't know where else it would fit. Also in order to save time before heading to work this is basically cut and paste from what I posted on a larger forum and have yet to get a response from. I'm hoping that any information gained from this will be valuable for others in rural areas where winter power losses are common and big all in one UPS are astronomically priced so here goes.



So I'm looking to setup a UPS for my return pumps and skimmer and came across this

http://www.tripplite.com/en/products...xtModelID=2938

And was wondering if the PWM sinewave would damage my Blowhole 1450 pump, as I know the transformers in my DC pump power supplies will filter out the wave form anyway.

Or should I just swallow the 200 dollar greater price and buy the

http://www.amazon.com/gp/product/B00...pf_rd_i=507846

I plan to use marine deep cycle batteries wired in parallel to give me about 200 to 300 Ah as I live in a rural area that routinely looses power for several hours during the winter snows. I know a generator is ideal, already have one, but it doesn't start itself, so needing a way to keep the tank going for up to 9 hrs during the work day.


Also would this unit be trust worthy
http://www.ebay.com/itm/3000W-1000W-...item4d04f84684
As it's CE AND FCC labeled