Batteries are Cheap, Backup power is expensive


Dear Audiophiles,

To make a long story short I need to make sure my Internet devices stay on even when power is down for 24 hours, which on the South Carolina coast is realistic. 

I have an APC UPS 600VA which I though would do the job but it actually lasts less than 2 hours.  So I have been crunching the numbers and have really been surprised at how expensive an APC UPS is per minute of run time vs. modern battery based generators and DIY solutions. 

An APC UPS can be anywhere from $1.50 to $2.50 / minute of run time while an EcoFlow Delta for instance is around $0.50 to $0.75 / minute.  Not only is the EcoFlow cheaper but just has ten times better run times.  A single 1 kWh unit will keep my data closet running close to a full 24 hours.  I have too many devices in there which consume ~ 50 watts.  50 x 24 = 1,200 

I did in fact purchase a Delta 2 with back up battery for other reasons than the data closet, but when doing the research I also investigated DIY backup solutions and came across the idea of using a Renogy inverter/battery charger + 2x 12V LiFePO4 batteries.  It’s even cheaper than the Ecoflow but requires much more effort to set up.    I’ll do a full write-up on that soon. 

What have you done to back up your home devices?  

erik_squires

Showing 3 responses by billpete

What about a generator that comes on automatically if your power goes off? Or is the lag time too slow? 

@erik_squires I like the idea of the generac, being all electric at our place as well. I don't have one either and we live in tornado alley of MO, not the worst part of MO but NE MO. I'd like to have the generac but it is expensive. I think they do offer some kind of payment plans though, just haven't looked into it. We've lived here for the last 12 years and have only lost power for a few hours, once. Another time or two, off for less than an hour. Not bad considering all the above ground power lines and trees. Seems like a recipe for disaster. We also get a lot of ice storms but have yet to lose power in one. 

Anyway, I hope you find the solution to your problem. It's not a simple or inexpensive one. Seems like you can solve the short term one easily enough but the long term one gets trickier. There are a lot of smallish gas and diesel powered generators that might serve you there. Might be cheaper than modding your SUV, not sure. Good luck. Post what you find. 

I do like the solar solutions but they are not cheap and the same lag time would apply.

@erik_squires 

You're right, there are a lot of ways to utilize solar and I don't understand half of them. There are a few places around who bought into it to run their whole house. I'm not sure it's the way to go here in MO just yet. It costs a lot to set up. I'd never live long enough to get it back. My wife has a cousin in TX who says he got his money back in 5 years or so. I don't think that would happen here. I was talking with a friend who got his going and it didn't sound good to me at all. It did not provide enough to run his A/C in summer and when he produced more than he needed, the electric COOP paid him about 10 cents on the dollar for what they bought back. I don't think he saved any money at all by doing it. I think he lost money. The numbers were not good.

My wife is always saying we should go solar or even wind. Either proposition is outrageously expensive. We have a pretty good sized house, all electric. I can burn wood but I found it to be a lot more work than it was worth. I might have saved $200 a year on the electric bill. In the big picture, that is not enough to warrant all the work or the mess created by the wood. When we first moved here, I added a wood furnace, cost over 4k by the time I had it installed. It accomplished nothing, was poorly installed and could not keep up with our duct work. I would have had to have a whole separate system of duct work installed. I sold it after a couple winters and lost over 2k. Only benefit was getting in better shape at 60 years old cutting a lot of firewood and hand splitting it all with an axe. A lot of work and I did manage to tear my rotator cuff in the process. So much for getting in shape. :)

I'm afraid we'll be stuck with terrible electric bills for the duration. We considered downsizing to a smaller home but I decided that I'm too dang old to do that again. Decided to make the best of what we have here. Things could be worse I suppose. Hope you find what you need.