APCBack UPS - BX750MI - UPS 750VA Battery Backup & Surge Protector, Backup Battery With AVR, Dataline Protection, Uniterruptible Power Supply BX750MI

It works well. but only for about 2 years.Pc & hub

Good budget UPS for my home network rack. Fits in my 600mm deep cab with the help of se right -angle cables (not supplied).Connects to QNAP NAS over USB without problems to allow it to gracefully shut down in the event of power failure.There is a review saying the battery is not replaceable but the APC website states a part number of RBC17 as a replacement battery so I think this is an error.

Bought 2 and was easy enough to set up on different computers (does not support 1 pc monitoring both, but was able to get free software that allows to view both via local webpages after some system tweaks)Unfortunatly one unit contained 2x 2 pin plugs rather than the 1x 2 pin and 1 UK plug and support wasn't available when I needed it most (ended up buying a new cable otherwise would have had to wait 2 days just to contact support)One unit had a fault after a tempory drop of power but has worked fine since (it kept power to the pc but didn't want to resume mains power till reset).

I purchased this UPS to connect to my small office server which runs 24/7. Living in a village means we are occasionally subjected to short power disconnections. A Server running 24/7 with CCTV writing to the HDD requires a stable power connection so that your HDD are not damaged by such power cuts. I didn't require anything to heavy in terms of a UPS as our power is normally restored pretty quickly. I just wanted something that would connect to my server via USB and initiate the self protection mode for the disks - the BX750MI would provide this protection for me so i placed my order.First impressions were that the UPS is fairly large. For a single 9ah battery i expected it to be a little smaller. Inside the box you get the main UPS unit and an IEC male to female kettle connection lead. Whilst this is great for built in PSU's it was of no use to me as my device using a barrel plug connection. I solved this by connecting an IEC extension lead to allow me 3 pin UK plug connections. What was super frustrating is that the package did not include a power connection cable!! How can a company sell a product that you can not even use out of the box! I didn't have a spare IEC 3 pin power lead, so this meant i had to go out and buy one to connect the device to the main power. I can not being to tell you how frustrated this made me feel!After i purchased the power lead (yes i am still super annoyed by this!) the device sprung to life. The device is very simple, providing a minimal amount of backup power for lower powered device, up to around 300W. My server uses around 45w so this was more than ample. There is no display on the UPS so you have no idea of your remaining run time load, however my QNAP recognised the device straight away when connected with the included USB cable and informed me i had around 45mins of power.There are two strips of very bright green LED's on the device which illuminate the whole room at night. You can dim these slightly by holding the power button, but they are still way to bright for my liking. You can not disable them whatsoever. Testing the UPS function worked well, it continued to power my server until reconnected to the mains supply. What was annoying was the loud buzzing that came from the unit when it was supplying power to my server. I have another UPS in my lounge and this is absolutely silent apart from the intermittent beep it makes to alert you to the power failure. The buzzing from this APC unit made me question if the device was functioning correctly and if it was safe!I also tested the load on the device after the internal batteries were charged to 100%. The UPS has an overhead of around 15w according to my energy meter. So it will increase your energy costs by connecting up this UPS, however it should only be by around a small amount. My understanding of this device is that is also uses a stepped sinewave rather than a pure one - that should be fine for most home usage scenarios, but if you have highly sensitive equipment, especially with motors connected, then you should consider spending a little more to obtain a pure sinewave UPS.Would i recommend this UPS to others? If it came with a power lead then i most probably would, it's not badly priced, and does do the job of maintaining power during a power cut. The bright LED's i can kind of live with, the buzzing noise is frustrating, but this only happens when it switches to battery power mode. I just can not get past the fact they do not include a power lead with the device! Based on this i just can not recommend this device to others! A kettle lead literally would cost this company a few pence - it's just bizarre to sell a product you can not power straight from the box?!My advice is look elsewhere...I hope that you found my review helpful

Good product. Works for its purpose.

APC is a market leader, but both the design and manufacture of this unit have issues. I haven't had it long enough to say much about its raison d'etre functionality, but I will say that it has a very strong example what I've always called "the Chinese smell" of the residues of manufacture not cleaned off - these are possibly VOCs, but it's hard to know. It's one of the strongest examples of this I've encountered; I left it powered in an outside shed for a week in the hope the smell would subside (it didn't). It literally leaves a bad taste in the mouth just sharing the same room - who knows if there are health consequences; I hope not. It also has a do-nothing power consumption of 40W - year round, even with no loads connected, and is consequently continuously always warm to the touch. That's currently going to cost me around £90 per annum, which puts its already high purchase price in an even less favourable light, along with its other environmental impacts. My similar (though slightly lower capacity) Cyberpower unit has neither of those issues - on reflection I should probably have opted for another one of those, but I couldn't find a unit with the right specification for an affordable price - false economy as it turned out. Stuck with it now. I might disassemble and actually clean the internals, like they should do in the factory before they ship them, and that's part of the quality proposition, so I'd have to say this is a poor quality product. As for the power consumption, that's just simply poor design. If you can avoid this brand's unit, I would - the smell alone is enough to reject it. The already high cost of ownership is made worse of course by the need to replace the lead-acid batteries probably every two years; that's about another £55 per annum - so we're looking at a purchase cost of £250 plus an annual use cost of around £145 at current (2025) prices. There has to be a better way, but lithium-based UPS, although they'll last years longer, are priced £1,000+ for this level of capacity; time for some disruptive market entrants.

The BX750MI replaced a similar APC Backup whose battery had given up. I could have replaced the battery but the BX750MI was about £5 more expensive and I received a warranty. No brainer. Nice compact unit and am really pleased with it.