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Never plug a UPS into an extension cord: The surplus load could potentially cause it to overheat and soften. If your wire on the UPS isn’t extensive enough, you’re better off going your workstation nearer to an outlet or shelling out $100 or so to obtain an electrician put in a different outlet—both of that is preferable to changing harmed electronics or starting up a fire unintentionally.
The screen is simple to study due to colorful icons and large textual content, and it shows handy data like the input voltage, the output wattage, and how much battery lifestyle remains.
Peak electric power output: To check the utmost load that every UPS could handle, we turned on each one after which unplugged it, leaving it jogging on its battery. We then plugged in domestic appliances of known wattages one by one till the battery overloaded along with the UPS shut down.
Battery capability: Maker operate-time scores outline just how long a UPS can keep products of assorted wattages working. Since most ratings are based upon perfect ailments, we tested our top rated candidates at two various hundreds to determine how they'd accomplish in actual-world use: 20 W, symbolizing the combined electricity attract of the household modem and router, and 300 W, representing the power usage of a modem, router, PC, and external hard disk drive jogging at the same time.
Nonetheless, we decided not to make it a decide on as it done badly in our surge checks, allowing by means of just 593.2 volts while in the neutral line but leaving its other two electrical power circuit wires unprotected. It’s also expensive, costing $280 at this creating.
These types of software program should also let you method the UPS to finish a series of duties ahead of shutting down for those who’re absent from the Laptop or computer when the facility goes out—which is very useful for units with shorter run times.
To test chargers, I’ve used many hours looking ahead to the แบตเตอรี่เครื่องสำรองไฟคืออะไร batteries in my mobile phone, laptop, together with other family appliances to die—just so I could recharge them. Outside of my common protection spots, I’ve documented on the very best wood pencils, mousetraps, therapeutic massage chairs, and scented candles for Wirecutter.
User-replaceable battery: We examined only those styles using a person-replaceable battery (movie), which allows you to commit only $thirty to $60 on a new battery Down the road in place of having to buy a complete new UPS.
We necessary Just about every model’s battery to keep a 300 W load functioning for at least five minutes, which provides you time and energy to safely shut down gadgets.
The CyberPower CP900AVR has แบตเตอรี่เครื่องสำรองไฟ high quality features that you typically locate in units costing two times just as much. It's ten surge-secured retailers—5 of which happen to be battery-backed—and greater than double the output required to electricity a residence modem, router, Laptop, and exterior disk drive.
In case you’re on a tight budget, the Amazon Basics Standby UPS 800VA is an affordable UPS While using the battery and operate time of a dearer design: It could continue แบตเตอรี่เครื่องสำรองไฟ to keep a normal router and modem operating for up to at least one plus a half several hours.
It's got some handy attributes, however it’s lacking two or three large types. Like our other picks, this design incorporates a circuit-reset button in addition to a person-replaceable battery, and it comes along with totally free downloadable computer software.
It's two coaxial connectors for hooking up a cable box or modem, as well as a serial port for any printer or other peripheral unit. It also offers two community ports so that you can link the unit to a server, a Wi-Fi router, or another machine that needs a wired network connection.