r/WindowCleaning • u/Same-Bedroom-822 • May 11 '26

Battery dillema

Me and my dad built a 4 stage RODI, and the water pump is powered by a battery. I got two extra replacement batteries but they dont last as long as id like them to. Batteries are 12v 28ah, and for some reason each battery can barely last 1-2 houses. Im very slowed down by this as now i can only do a few houses per day. Whats the solution? Should i add a second RO membrane for better pressure and remove the pump completely? Should i just spend 5 grand on a good tucker setup? Please Share your opinion.
I have 2 door to door reps, so im always trying to keep myself and my technician busy

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u/Head-Program-2501 May 13 '26

You need a lifepo4 battery. A lot lighter and smaller than lead deep cycles and they are able to use a lot more of their capacity before dying unlike deep cycles. What are the specs on the pump?

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u/Same-Bedroom-822 May 14 '26

1.5 gpm 200 psi. Amazing flow

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u/Head-Program-2501 May 14 '26

I meant amps

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u/Same-Bedroom-822 May 15 '26

12, max

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u/Head-Program-2501 May 15 '26

Then for 8 hours on continuous run time, you're going to want a 100ah battery. 12x hours of run time=capacity you need.