Durable Laptop Batteries
Repurposing an Old UPS With an External Battery
PLEASE read the whole description! This video helps prove that there is something (some) CFL bulbs are good for. 
In light of the blizzard and the fact that my electricity has been going up and down around the time I made this video, here is a presentation on how to repurpose an old uninterruptible or standby power supply with an external battery. Toward the end of this video, you also get to see a demonstration of how it works. First: consider your safety. Don’t do this if you don’t understand what, why and how to do this. Be honest with yourself and your skills. It’s not worth being hurt or burned. Disassembling a UPS presents a risk of electrical shock and some of the parts inside can remain energized! A big UPS has its own hazards. Always use fuses and appropriately sized wiring. Never charge a lead acid battery in an enclosed space or in a heavily populated part of your home. Explosive gases can build up and be ignited. Second: consider that not all UPS units will properly charge or operate from any other battery than the one they were sold with. You will have to experiment to see what works with what you have. Third: yes, there are other ways of doing this–a large enough charger and inverter can perform the same function if you supply the batteries. It’s a “good idea” to use a battery intended for the purpose, such as a deep cycle type, but cheap car or lawn tractor batteries will usually work better than you’d expect and live long enough to be a more economical …
Video Rating: 5 / 5
120%+ SUPER BATTERY LIFE! Buy Durable Laptop Batteries at LaptopBatteryLife.com
I? know that. You know that. A lot of people don’t–and they see the “name brand” battery they’re “supposed to use” (ha!) costs the same as a new UPS.
It’s unfortunate that perfectly good stuff ends up in the trash like this. Fortunately, some of it does get rescued.
You can by good quality? compatible batteries for very low prices (under $30). No need to ever throw out a UPS.
Nice vid bill i want to buy a ups to protect my home entertainment center from surges and keep it running for at least an hour since thats how long the light company takes to fix a prob. It sucks cause where i live we are very prone to outages. No internet sucks!! These units have just enough power to keep my router running. Im in the middle of figuring out how many watts my center pulls to buy this? ups and fter i might connect an external battery like yours. If you anything to add for my proj
I believe the word is “score”.? Good find!
Well I guess your surprised then.? The battery works
I’ll be a little surprised if it does. Still, I’ve been given a UPS or two over the years that still had good? batteries.
I? just got a back-ups 600 today at goodwill. Im charging it right now to see if the battery works
i watched a video that all u do is add distilled water to? each battery cell
I mean the battery is of same 12 volts but the ampere is 7ampere in the manufactured one that is built the UPS, can I change and connect? it to a new 9 ampere 12 volt battery pliz reply
The new battery voltage must match the old battery. If you’re not sure how to do this, it? would be safest not to do anything. You can be badly hurt, burned or even blinded if you make a serious enough mistake.
But if I connect? a larger battery to a UPS that is used for the computer it will not harm the UPS isn’t it
Some UPS units will not properly? charge a larger battery than what they came with from the factory.
Connecting with larger ampere can harm the? UPS or what pliz tell me ?
there? are some places online that have good batteries cheap for these. don’t know them now though.
In those cases, the motor or the transformer could hum loudly,? get hot, operate improperly or possibly even fail. There are UPS units–mostly larger ones–that have a true sinewave output. These can operate almost any AC line powered device without incident.
Normal AC “line” power looks like a smooth sine wave if you were to observe it with an oscilloscope (or, perhaps more honestly, “it should look that way”).
It’s more expensive and difficult to do this with the output of a UPS. Since most end up hooked to computers whose power supplies don’t really care about the shape of the incoming power waveform, most UPS units either generates a square wave or “stepped approximation to a sinewave”. Some motors and transformers don’t like that.?
I have an Eaton Powerwear 3105 UPS that no longer works, so I’m thinking of getting rid of it, today I was looking at the warnings on the battery cover and it said? something about “This device output is not sinusoidal”, what does that mean? Does that have something to do with a sine wave output?
That Sony es component that you have situated atop? of the speaker, could you make a video of it please?
my meter only has a positive and negative. these 2 wires read the? voltage and also powers the screen and backlite. do i simply connect it on my battery and put a switch in the middle ?
…on the voltage sensing side. (Reversing them on the power supply connections might prove fatal to the meter, so if you have to get one connection right, it is the power connection.) There are also some meters with? five wires–the fifth is ignored.
Yes. I’ve seen some variation depending upon where you get the meter, even if it looks the same as another. There are two wires for voltage input, positive and negative. Then there are two wires for the input from the voltage to be monitored. Here is where things get tricky. Some meters will read the voltage no problem, however you hook the leads up. Others will read the voltage with only one negative connection. Still others will blank out with + and -? reversed. (cont’d…)
Hi…could you? tell me how you wired up the voltage lcd screen as i have one exacly like the one you have
Centris 650 – a future project when I get some time to play with it. (Like I’ve been saying since? this video was made.)
Is that a Macintosh IIvx? on the right?
The ES350 and its siblings are the very definition of “minimal build quality”. They are very cheaply made. Even the most basic of modern desktops is likely to load one of these past the halfway point. If? there is a way you could get even a slightly better unit (like the BK500), it would be worthwhile.
Laptops don’t require a UPS. A good quality power filter would do. The ES350 would be likely to run a small device like a router for an hour or so on its stock battery.