Power Management Deals

Handy for job sites or power outages since it turns an existing Milwaukee 18V battery into a portable power source for small electronics and tools, and it's currently $18 (20%) off the $90 list price. Buy Now at Amazon

Handy for anyone running a generator during power outages who needs distance between the unit and the house, since 50A capacity handles higher-draw appliances without overheating like lighter-duty cords can. Buy Now at Home Depot

Handy for keeping a nearby outlet accessible when furniture or wall placement forces an odd angle, since the rotating plug swivels flat against the wall instead of sticking straight out; it's priced at its regular $10 list, so no current discount applies. Buy Now at Best Buy

Anyone building or maintaining medical-grade equipment needs a power supply that meets strict safety and reliability standards, and this one is built specifically for that kind of certified application rather than general industrial use. Buy Now at Newegg

Anyone whose Panasonic RFEA403B-S charger died or went missing can grab this replacement adapter instead of tracking down the original at Newegg. Buy Now at Newegg

Musicians running a Vibratone Pro amp who just need a reliable replacement cord will find this does the job without any extra fuss, since it's built to the exact 3-prong spec the amp requires. Buy Now at Newegg

This adapter cord splits a single L14-30P generator connection into four standard 20A outlets, so it's useful during outages if you need to run several separate cords or devices at once instead of just one. It suits anyone who already owns a portable generator with an L14-30 outlet and wants more flexibility without buying a separate power distribution box. Buy Now at Home Depot

Rack-mounted setups with critical equipment benefit from the dual power inputs here, since it automatically switches sources if one feed drops, keeping your servers or AV gear running without interruption. Buy Now at Home Depot

Anyone running dual-voltage LED stage lighting rigs will appreciate having a single supply that outputs both 28V and 12V, so you're not juggling separate power bricks for different fixtures. Buy Now at Newegg

Anyone who's misplaced the original power cord for a small electronics device rated at 12V 2.5A will find this a straightforward, no-fuss replacement without hunting down the exact OEM part. Buy Now at Newegg

Anyone replacing a lost or damaged power brick for a 24V device will want to double-check their equipment's specs match up, since this FSP adapter puts out 3.75A at 90W rather than a universal output. Buy Now at Newegg

Anyone whose DragonHawk power supply cord has frayed or gone missing can swap this in without hunting down the original manufacturer's part. Buy Now at Newegg

Anyone running a Voodoo Octave pedal needs a stable, correctly-matched power source, and this adapter delivers the right output without introducing hum or noise into your signal chain. Buy Now at Newegg

Data center techs replacing a failed unit or building redundancy into a Juniper switch stack will want this exact match, since power supplies aren't interchangeable across models and getting the wrong one means downtime waiting on a return. Buy Now at Newegg

Handy for anyone who wants extra outlets and USB ports without extra surge protection bulk, especially at bedside tables or behind furniture where space is tight. Walmart has the 2-pack for $9, which is $10 off the $19 list price. Buy Now at Walmart

Anyone building or repairing electronics that need a stable 5V rail will find this useful, since it delivers a steady 6A of output without the reliability headaches of cheaper unbranded supplies. Buy Now at Newegg

Handy for running two DC-powered devices off a single outlet or adapter, particularly useful if you're setting up cameras, LED strips, or routers in a spot with limited power access. Buy Now at Newegg

Anyone setting up security cameras, LED lighting, or industrial control systems on a DIN rail will want a dependable power source like this, and the 4A output gives you enough headroom for multiple connected devices without overloading the supply. Buy Now at Newegg

Handy for keeping a fridge, CPAP, or power tools running during an outage, since the 1,843Wh capacity and 2,400W output can handle larger appliances that smaller stations can't. At $500, that's $260 off the $760 list price. Buy Now at Amazon