Power Management Deals

Handy to have on hand as a spare or replacement for laptops and other electronics that use a compatible barrel connector, since it covers multiple voltage settings in one adapter. It's priced at its regular $25 list, so there's no current discount. Buy Now at Best Buy

Handy if your Mabis blood pressure monitor came without a power cord or the original one wore out, so you can skip running through batteries during regular monitoring. Newegg carries it for those who'd rather plug in than restock AAs every few weeks. Buy Now at Newegg

Useful if you're running LED strip lights, custom PC lighting, or any 12V DC project that needs a stable, higher-wattage power source without wiring directly to a battery or car power setup. Buy Now at Newegg

Handy for lamps, fans, or appliances that are awkward to reach, this outlet lets you toggle power on and off without getting up or hunting for a wall switch. At $25, that's $11 off the $36 list price. Buy Now at Walmart

Useful for anyone running 12V accessories in a vehicle or system that operates on a higher voltage, as it steps down the input to a stable 15A output without the energy loss you'd get from a resistor-based solution. Buy Now at Newegg

Useful if you're running sensitive electronics like medical equipment, audio gear, or anything with a motor off a 12V battery, since pure sine wave output won't cause the interference or damage that modified sine wave inverters sometimes do. Buy Now at Newegg

This adapter lets Tesla owners plug into standard J1772 public charging stations, which is useful if you're heading somewhere without a Supercharger nearby. Amazon has it for $15.04, about $5 off the $19.99 list price. Buy Now at Amazon

A buck-boost converter handles both stepping voltage up and stepping it down, which makes this useful for electronics projects where your input voltage might fluctuate above or below your target output. The 4-pack gives you extras to work with across multiple builds without paying for individual units each time. Buy Now at Newegg

Anyone whose RCA DCM305 or DCM305R modem power adapter died or went missing can use this as a straightforward replacement without hunting down the original. Buy Now at Newegg

Useful for RF engineers or hobbyists working with devices that need DC power injected into an RF signal path without disrupting the signal itself, covering a frequency range that includes most common wireless bands like Wi-Fi and LTE. Buy Now at Newegg

Update: The price has changed to $599.00 since this was originally published.

Power outages or off-grid trips call for this kind of backup, since 1,024Wh can keep essentials like a fridge or laptop running for hours rather than minutes. At $589, that's $210 (26%) off the $799 list price. Buy Now at Amazon

Data center and server room operators managing high-density racks will want this for the real-time power monitoring, especially when tracking 3-phase loads across multiple circuits without eating up rack unit space. Buy Now at Newegg

Useful for keeping a home office, router, or NAS drive running during short outages, this lithium-based UPS offers a longer cycle life than the lead-acid units that dominate this price range. At $199, that's $50 off the $250 list price. Buy Now at Amazon

Anyone dealing with a cluster of devices near one wall outlet gets 8 plugs and 4 USB ports here, plus a 6-foot cord to reach beyond the baseboard. It's $3 off the $16 list price at Walmart. Buy Now at Walmart

A rack/tower convertible UPS at this capacity is useful for small server setups, workstations, or networking equipment where you need enough runtime to save work and shut down gracefully during a power outage. Buy Now at Newegg

For anyone who runs a portable generator during outages, this setup lets you wire a dedicated inlet into your home so you can power your panel directly instead of running extension cords through windows. It's currently $116.44, about $20 off the $136.99 list price. Buy Now at Amazon

This inverter suits off-grid setups or RV owners running sensitive electronics, since pure sine wave output prevents the interference or damage that modified sine wave inverters can cause. It's $33 off the list price at $186.99. Buy Now at Amazon

Anyone building or repairing circuits will appreciate having two independent voltage rails, since it lets you power separate parts of a project at different voltages without needing a second unit. Buy Now at Newegg

Anyone who wants outdoor lights or holiday displays to turn on and off automatically without relying on wifi or a phone app will get solid use out of this timer, since it works off a photocell sensor and manual mechanical dial instead. Walmart has it at $15.99, which is $14 off the $29.99 list price. Buy Now at Walmart