Comments on: Repurposing an Old UPS With an External Battery http://blog.laptopbatterylife.com/2012/10/01/repurposing-an-old-ups-with-an-external-battery/ Durable Laptop Batteries Tue, 30 Apr 2013 01:48:43 +0000 hourly 1 http://wordpress.org/?v=3.5.1 By: uxwbill http://blog.laptopbatterylife.com/2012/10/01/repurposing-an-old-ups-with-an-external-battery/#comment-20689 uxwbill Tue, 02 Oct 2012 10:42:01 +0000 http://blog.laptopbatterylife.com/2012/10/01/repurposing-an-old-ups-with-an-external-battery/#comment-20689 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.

]]> By: negativeeffect2 http://blog.laptopbatterylife.com/2012/10/01/repurposing-an-old-ups-with-an-external-battery/#comment-20688 negativeeffect2 Tue, 02 Oct 2012 09:58:04 +0000 http://blog.laptopbatterylife.com/2012/10/01/repurposing-an-old-ups-with-an-external-battery/#comment-20688 Is that a Macintosh IIvx? on the right?

]]> By: uxwbill http://blog.laptopbatterylife.com/2012/10/01/repurposing-an-old-ups-with-an-external-battery/#comment-20687 uxwbill Tue, 02 Oct 2012 09:56:45 +0000 http://blog.laptopbatterylife.com/2012/10/01/repurposing-an-old-ups-with-an-external-battery/#comment-20687 Centris 650 – a future project when I get some time to play with it. (Like I’ve been saying since? this video was made.)

]]> By: petegrimsby http://blog.laptopbatterylife.com/2012/10/01/repurposing-an-old-ups-with-an-external-battery/#comment-20686 petegrimsby Tue, 02 Oct 2012 09:45:23 +0000 http://blog.laptopbatterylife.com/2012/10/01/repurposing-an-old-ups-with-an-external-battery/#comment-20686 Hi…could you? tell me how you wired up the voltage lcd screen as i have one exacly like the one you have

]]> By: uxwbill http://blog.laptopbatterylife.com/2012/10/01/repurposing-an-old-ups-with-an-external-battery/#comment-20685 uxwbill Tue, 02 Oct 2012 09:34:48 +0000 http://blog.laptopbatterylife.com/2012/10/01/repurposing-an-old-ups-with-an-external-battery/#comment-20685 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…)

]]> By: uxwbill http://blog.laptopbatterylife.com/2012/10/01/repurposing-an-old-ups-with-an-external-battery/#comment-20684 uxwbill Tue, 02 Oct 2012 08:35:52 +0000 http://blog.laptopbatterylife.com/2012/10/01/repurposing-an-old-ups-with-an-external-battery/#comment-20684 …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.

]]> By: petegrimsby http://blog.laptopbatterylife.com/2012/10/01/repurposing-an-old-ups-with-an-external-battery/#comment-20683 petegrimsby Tue, 02 Oct 2012 07:53:17 +0000 http://blog.laptopbatterylife.com/2012/10/01/repurposing-an-old-ups-with-an-external-battery/#comment-20683 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 ?

]]> By: Gotye1 http://blog.laptopbatterylife.com/2012/10/01/repurposing-an-old-ups-with-an-external-battery/#comment-20682 Gotye1 Tue, 02 Oct 2012 07:26:17 +0000 http://blog.laptopbatterylife.com/2012/10/01/repurposing-an-old-ups-with-an-external-battery/#comment-20682 That Sony es component that you have situated atop? of the speaker, could you make a video of it please?

]]> By: Lachlant1984 http://blog.laptopbatterylife.com/2012/10/01/repurposing-an-old-ups-with-an-external-battery/#comment-20681 Lachlant1984 Tue, 02 Oct 2012 06:46:37 +0000 http://blog.laptopbatterylife.com/2012/10/01/repurposing-an-old-ups-with-an-external-battery/#comment-20681 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?

]]> By: uxwbill http://blog.laptopbatterylife.com/2012/10/01/repurposing-an-old-ups-with-an-external-battery/#comment-20680 uxwbill Tue, 02 Oct 2012 06:09:19 +0000 http://blog.laptopbatterylife.com/2012/10/01/repurposing-an-old-ups-with-an-external-battery/#comment-20680 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.?

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