Battery Backup Guide

Freedom asked:


Hello,

I am working making a battery backup setup usually called a UPS (uninterruptible power supply) using a power inverter, a car battery and a battery charger.

I am likely going to use http://cgi.ebay.com/OSP-1500W-PURE-SINE-WAVE-POWER-INVERTER-DC-AC_W0QQitemZ350267893228QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item518d97e5ec this inverter. It delivers pure sine wave power which is what I need as I am going to be using this to power electronics such as a computer and a projector. I am a little lost on which battery charger would be best though. I’ve seen something called a ‘battery tender jr’. But I don’t know if that would be best.

It sounds ideal. What I’ve learned is that I probably want a float charger with an option of either manually or automatically once in a while charging the battery to it’s maximum for a few hours to enable longevity in the batteries life.

Any input would be appreciated.

Thanks!
I don’t think I understand your answer. It sounds likely that we aren’t on the same page as to how this is set up. Plugged into an outlet (120v)is a battery maintainer, it is then connected (12v) to a battery. The battery (12v) is connected to a power inverter, and then the inverter powers devices(120v).

Thomas asked:


The Kidde combo Smoke/CO detector that is interconnectable I want only comes as a hardwired detector with battery backup. Is it possible to just use it as a battery operated unit without connecting it to my house wiring? I assume the answer is yes since the battery is backup power.

Thomas asked:


The Kidde combo Smoke/CO detector that is interconnectable I want only comes as a hardwired detector with battery backup. Is it possible to just use it as a battery operated unit without connecting it to my house wiring? I assume the answer is yes since the battery is backup power.

korngirl313 asked:


We have a sump pump failure and our basement has water. We also have a battery power backup sump pump, but we can figure out how to turn it on. There is a light on the backup saying power is on. Can someone please help, and soon!

tomma0264 asked:


Even though I removed the battery from my PSP, a little while later I put it back in, turned it on and the time was correct - there was no source of power. Does it have like backup power from the battery or something?
Another thing I noticed is when I unplug the computer, even for weeks, it keeps track of the time, internet or no internet (i think)

Mike asked:


How likely is data corruption and data loss to occur if you enable write caching (optimize for performance) on an external hard drive? Do the benefits outweigh the risks? I know power loss is a major concern. I do not have my external or my PC hooked up to a battery backup. Power outages do happen once in a blue moon. Is this something to worry over when it comes to enabling write caching? Or is it just a small chance that data corruption could happen?

It seems like the external causes my PC to lag when logging on, so I am hoping that if I optimize it for performance this will help as well as making data transfer a little quicker. Any insights would be great.

anon_guy_anon asked:


This is the product I bought

http://www.shopbot.com.au/pp-powerware-3105-700va-price-40619.html

It needs to be turned on by pushing a button. My question is whether I should leave the power backup/power surge protector still on when my pc is turned off. It doesn’t say in the instructions what I should do in this regard but I believe if there is no power going through my pc at all that the battery inside it won’t recharge and then it will stop working.

JC asked:


Hi

I have a question about using the Sealed Acid Battery 12V 20AH (S)
“http://www.batteryspace.com/index.aspPageAction=VIEWPROD&ProdID=2177″
and Smart Charger (3.0 A) for 12V Lead Acid Battery
“http://www.batteryspace.com/index.asp?PageAction=VIEWPROD&ProdID=2799″ at the same time. My question is, I have a device that needs backup power and normal wall power. Can i just connect the battery and the smart charger together to power up my device? I mean when the wall power is provided, the battery will keep charging and discharging to give out 12V for my device. When the wall power is not provided, the battery will discharge for 20Ah. When the battery already discharges 50% and wall power is suddenly provided, does the battery still gives out 12V during charging time?
The loads are 3 different devices.
1) Microcontroller 12V 500mA
2) Sensor_1 9V 100mA
3) Sensor _2 9V 100mA

Fuji_mans asked:


Ok, we all know that UPS are expensive as it is. And every 2-3 years you have to change the battery.

I have an APC BE325 which is a 325VA. The battery is a 12V 3Ah. There is no link to a computer so no software to test the battery or limit the use of different battery.

So I wanted to know is that could I put a car or marine battery in it to increase the backup power since they are both 12V. And is there anything to be concern about before doing that?
Should I worry about overheating if I use a deep cycle battery? Also would there be a problem with a much larger ah battery?

Jason asked:


I’ve been looking at APC brand UPS (uniterruptable power supply) and need to figure out what the minimum size ups needed (700,1400, etc) to power the sump pump is…