Power Management Deals

Anyone building or repairing precision instrumentation that needs a stable high-voltage rail will find this handy for converting a standard 12V input into a regulated 2kV output without a separate bulky power supply. It suits engineers working on sensor calibration, photomultiplier tubes, or other applications where low current, high voltage DC is required. Buy Now at Newegg

Handy for replacing a lost or damaged charger on routers, cameras, LED strips, and other small electronics that take a standard barrel-plug adapter, since Ablegrid's kits include multiple connector tips to fit different devices. Buy Now at Newegg

Anyone replacing a lost or fried power cord for their video recorder needs a reliable match, and this adapter delivers the exact 12V 4.17A output many recorders call for without the guesswork of a universal charger. Buy Now at Newegg

Handy for DIY solar setups where you're combining panels or battery banks, since it stops current from flowing backward and potentially damaging your components. Buy Now at Newegg

Handy to keep in the trunk or glove box for a dead battery situation, this 1,500-amp jump starter works on most gas engines and eliminates the need to flag down another driver. At $34, that's $26 off the $60 list price. Buy Now at Amazon

Handy for powering USB devices off an existing PoE line, so it suits anyone setting up remote cameras or network gear where running a separate USB power cable isn't practical. Buy Now at Newegg

Anyone setting up low-voltage LED strips or landscape lighting needs a reliable driver like this, and 60W gives you enough headroom to run longer runs without flickering or dimming issues. Buy Now at Newegg

Anyone tired of running separate power cables to network devices like Raspberry Pis or IP cameras will appreciate this splitter, since it pulls power right off the Ethernet line and delivers it through USB-C. Buy Now at Newegg

Handy for anyone who's misplaced the original charger for a router, speaker, or small electronic, since the interchangeable jacks mean you likely won't need to track down that exact model. Buy Now at Newegg

Handy for anyone replacing a lost or frayed cord on a 3V device like a router, camera, or LED strip, since matching the exact voltage matters more than most people realize. The 2A output also gives you enough headroom for devices that draw a bit more power at startup. Buy Now at Newegg

Handy for anyone maintaining or upgrading DJ and stage lighting rigs, since it covers the wide 12V-36V range many moving head fixtures need without requiring a separate power unit for each voltage. Buy Now at Newegg

Handy replacement if your device's original 4-pin power adapter has died or gone missing, since sourcing that exact connector type elsewhere can be trickier than a standard barrel plug. Buy Now at Newegg

Anyone who's misplaced the original charger for their Sony TV or monitor can grab this as a direct replacement without hunting down discontinued OEM parts. Buy Now at Newegg

Anyone whose MelodySusie nail dust collector's original power supply died can swap in this adapter without hunting down a discontinued part, since it's built to match the same voltage and output specs. Buy Now at Newegg

A compact step-up converter module that lets you take a lower DC input voltage and boost it to a higher output, useful for DIY electronics projects, bench power supply setups, or anyone who needs adjustable voltage regulation without building a circuit from scratch. Buy Now at Newegg

Handy if you've misplaced the charger for a small electronic and just need a reliable 5V 2A replacement without hunting down the original brand. Newegg carries this Ablegrid adapter for those routine swaps where any compatible plug will do the job. Buy Now at Newegg

Anyone who's misplaced the original charger for a compatible Sony device can grab this as a straightforward replacement without hunting down an OEM part. It's a solid pick if you'd rather have a dedicated power adapter on hand than dig around for one every time you need to charge up. Buy Now at Newegg

Anyone who's lost the original power brick for a high-wattage laptop or all-in-one desktop can use this as a direct replacement without paying original-manufacturer prices, and Newegg's spec list makes it easy to check compatibility before buying. Buy Now at Newegg

Update: The price has changed to $26.99 since this was originally published.

A car power inverter converts your vehicle's 12V outlet into a standard AC plug, letting you run small electronics or charge devices on the road. At $25, that's $2 off the list price. Buy Now at Amazon