Editor’s Notice: Nowadays we are kicking off a brand new assessment class for AnandTech: Uninterruptible Energy Provides. Those units are turning into an increasing number of commonplace as desktop customers are in search of laptop-like reliability. All of the whilst, it is also a space that we really feel is missing in just right, EE-enlightened systematic critiques. So our multi-talented chronic guru, E. Fylladitakis, is making use of his abilities to UPSes. As this can be a new house for us, please tell us what you suppose within the feedback under!

Whilst Uninterruptible Energy Provides are infrequently a brand new factor within the PC area, the tried-and-true battery backups for desktop PCs were present process a resurgence in reputation lately. Enhancements in chronic supply era comparable to GaNs were decreasing prices and making improvements to reliability, and in the meantime lithium-ion batteries, with their a lot higher power density/decrease quantity, are beginning to make inroads at the UPS marketplace as nicely. All of the whilst, with laptops outselling desktops within the client PC marketplace, a PC that does not close itself down throughout an influence outage is turning into the norm, somewhat than the exception. So what higher time is there to try UPSes?

To kick off our inaugural UPS assessment, we are beginning with a 1500VA unit from BlueWalker. BlueWalker is a corporation that originates from Germany and specializes at the design and advertising and marketing of power-related apparatus. The corporate used to be based in 2004, making it some of the oldest family UPS/AVR producers that also exist to this date.

BlueWalker is advertising and marketing their retail merchandise underneath the PowerWalker logo title and has an excessively extensive portfolio of each {hardware} and instrument merchandise to be had. For as of late’s assessment, we’re having a look on the PowerWalker VI 1500 CSW, a 1500VA/900W UPS that boasts a real sinewave output.

PowerWalker VI 1500 CSW
Energy Capability 1500VA/900W
Output Voltage 230 VAC
Enter Voltage 170-280 VAC
Sort Line Interactive
True Sinewave Sure (ish)
Battery Lead-Acid, 2x 12V/9Ah
Complete Load Backup Time 3.5min
Part Load Backup Time 10min
Battery-Sponsored Sockets 2 (Sort F)
Surge Safe Sockets 2 (Sort F)
USB-A Outputs 2 (2.1A)
Ethernet Surge Coverage Sure
LCD Show Sure
Dimensions 99 x 280 x 410 mm
Weight 13.1 kg


For the reason that BlueWalker is a German corporate, there must be little wonder that the PowerWalker VI is geared against the Eu marketplace. The UPS best outputs at a nominal 230V, and in a similar way, is best designed to just accept voltages round that vary (sorry, American citizens!). Previous that, this explicit model comes with 2 battery-backed Sort F sockets, in addition to some other two sockets with simply surge coverage. With 216 Wh of lead-acid battery capability, it is rated to run a complete load for a couple of mins, stretching into the double-digits at a part load or much less.

Of specific hobby with this UPS is the associated fee: true sinewave gadgets have traditionally carried a vital worth top rate, however BlueWalker is not charging just about the similar top rate as true sinewave UPSes from different main producers, making the PowerWalker VI 1500 CSW a far less expensive UPS – and at round 180, one that is fashionable in the marketplace consequently. However can it are living as much as the similar top chronic supply expectancies with out the similar wallet-busting worth? Let’s in finding out.

The PowerWalker VI 1500 CSW UPS

We won the PowerWalker VI 1500 CSW in a moderately easy cardboard field, with the heavy unit well-protected by means of thick packaging foam items. Throughout the field, we discovered a CD with the appropriate tracking instrument, thorough manuals in different languages, and a USB cable.


The PowerWalker VI 1500 CSW is a tower-style UPS with an LCD display screen on the entrance. Measuring best 410 mm deep, 100 mm extensive, and 280 mm tall (16.2 in × 4 in × 11 in), it is rather compact for a unit with that top of an output. There also are two USB charging ports on the entrance, proper underneath the LCD display screen.


The LCD display screen, as soon as became on, will display the fundamental electric figures of the unit, such because the voltage, the weight, and the remainder battery time. It remains off more often than not and the consumer must press the ability button momentarily with a purpose to flip it on.

On the rear facet of the tower, we discover 4 chronic sockets. We’re checking out the model with the 4 Schuko (Sort F) sockets, however BlueWalker additionally gives this unit with UK and FR sockets, plus a model with 8 IEC socket.

Notice that best two sockets be offering battery backup, as the opposite two are for surge coverage best. Actually, having simply two sockets hooked up to the unit’s battery backup output is an atypically low selection of powered sockets for a 1500VA UPS, as we generally see extra.

In conjunction with chronic coverage, there could also be a non-destructive circuit breaker and an Ethernet surge coverage trail (input-output jacks) to be had with the PowerWalker. In any case, there’s a fan that may best activate when the unit is operating on batteries, charging its batteries, or in auto voltage legislation (AVR) mode. The AVR mode necessarily has the unit operating on grid chronic however forces the AVR circuit to function, that may be helpful in some scenarios the place the ability grid is energized, however very unreliable.


Greater than part of the entrance fascia is a door that should be got rid of with a purpose to get admission to the battery compartment. It’s held in position by means of two small screws on the backside facet of the unit. As soon as got rid of, an excessively massive connector can also be noticed that connects the batteries to the primary unit. This must be unplugged with a purpose to take away the batteries. If the batteries want to get replaced, the wiring should be unplugged and transferred to the brand new batteries. We discovered two Leoch 12V 9Ah batteries within the unit, hooked up in sequence (24V 9Ah output). Leoch is a Chinese language producer of batteries this is among the biggest on the earth and whose merchandise are thought to be to be of reasonably just right high quality.

Cracking open the unit’s frame, we will be able to see the unit’s massive transformer and circuitry. The transformer if truth be told isn’t very massive for the 1500 VA unit and the volume of cooling it receives from the fan is reasonably low. This might not be an issue for the inventory unit, the place the batteries will most probably final only a few mins, as there might not be sufficient time for the transformer to overheat. Enhancing the unit’s batteries to extend its autonomy whatsoever with out a great deal upgrading its cooling functions can be, alternatively, not anything in need of suicidal.


The ability circuitry left us with combined emotions. The relays are provided by means of Golden Relays, a credible producer, but the capacitors are provided by means of Aishi and Jamicon, providers which are thought to be to be mediocre. 8 IRF3205 MOSFETs generate the output when the unit switches to its batteries, MOSFETs which are confirmed to be dependable however, having been launched nicely over twenty years in the past, are these days very reasonable and their efficiency is moderately deficient in comparison to extra fashionable MOSFETs. The workmanship is excellent however the circuitry format is reasonably out of date.

Supply Through https://www.anandtech.com/display/16551/the-powerwalker-vi-1500-csw-ups-review-trying-for-true-sinewave