Best way to power a Shurflo when power is close by

[BlueberryHill]

I have set up a 3/4" mainline that is 500 feet long and I hope to be able to get 100 taps running into it. The Shurflo 2088 12V pump will be only about 90 feet from a 115 outlet on my house. I have seen people mentioning that they have used computer power supplies to go from 115v to 12v and I have also seen others that have used battery chargers. I have both on hand. Is one better than the other? If I use a battery charger, is there an advantage to tying in a 12V car battery into the setup?

[maplestudent]

I can't speak for the battery/charger method, but I did use the computer power supply method last year, and it is not difficult to do. I ran an extension cord about a similar distance as you have. One power supply will give you several 12v leads, in case you also need to power a transfer pump or something else.

I recently swapped out a couple of Comcast cable boxes at the service center. I noticed the ones I was returning had 12v/ 2.8 amp power supplies. I left those in the truck when I went in; they didn't ask for them so I kept them and may try using one this year.

[Swampmapleman]

I run my 4048 shurflo with a truck battery and a trickle charger. At night when temperatures are low the pump turns off and the battery charges. Works great with 300 ft of 16 gauge extension cords. I have 300ft of 3/4 main and a 100 taps. Pulls 25 lbs of vac no problem.

[deitzd]

This is what I'm using.

http://www.ebay.com/itm/221845455078?_trksid=p2060353.m2749.l2649&var=520729519998&ssPageName=STRK%3AMEBIDX%3AIT

I bought the 10amp version and it's working well.

[CampHamp]

If I use a battery charger, is there an advantage to tying in a 12V car battery into the setup?
Battery chargers put out pulsed DC current (0V between each pulse), so the battery fills those gaps.

[maplestudent]

I've said this a few times in other threads, but I don't mind being redundant. This year I've been powering mine with a 12v adapter that outputs 2.67 amps, which seems to be enough, repurposed from a cable TV box. Last year I powered the same pump using a repurposed PC power supply. The cable TV adapter was a lot easier to implement and takes up way less space.