Power Management Deals

Anyone working on projects that need to step up a low voltage source to power tubes, relays, or other high-voltage components will find this useful, since it handles a wide 8-32V input range and boosts it up to 390V output. Buy Now at Newegg

Owners of older dryer-style outlets who want to charge an EV without an electrician visit will get the most out of this adapter, since it lets you plug a 50A EV cable into a 30A NEMA 10-30 socket safely. Buy Now at Amazon

This one's for anyone installing or wiring up car audio gear who needs a reliable 12V source to power accessories during testing or setup, and it's currently priced the same as list at $23, so there's no discount to factor in. Buy Now at Best Buy

Handy for road trips or job sites where you need to run laptops, small appliances, or other electronics straight from your car's battery, with a USB port that fast-charges your devices at the same time. It's currently priced at its $200 list, so no discount right now. Buy Now at Best Buy

Handy if your existing power adapter cord doesn't reach the outlet, since the extra length gives you more flexibility in setting up your device without needing an extension cord. 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

This inverter suits anyone running power tools, small appliances, or charging devices off a vehicle battery during road trips or job sites, with the fast-charge USB port covering your phone at the same time; it's currently priced at $330, matching its list price. Buy Now at Best Buy

Anyone whose LaCie Petit lost its original power brick can use this as a straightforward replacement without hunting down a proprietary part from LaCie directly. Buy Now at Newegg

Update: The price has changed to $39.99 since this was originally published.

A compact option for frequent travelers who want a single charger that works in multiple countries and can handle up to 70W of GaN charging output across devices simultaneously. At $40, that's $10 off the $50 list price. Buy Now at Amazon

Useful if you're building or modifying a power supply system and need to step up DC voltage to a higher level — the 30A output capacity makes it suitable for heavier loads like motors, audio amplifiers, or battery charging setups. Buy Now at Newegg

Handy for electronics hobbyists or anyone building custom power supplies, this module lets you take a higher DC voltage input and dial it down to whatever output level your project needs. Buy Now at Newegg

Rated at 3,000A peak current, this jump starter handles most gas and diesel engines and doubles as a USB power bank for charging devices on the road. At $38, that's $12 off the $50 list price. Buy Now at Amazon

Anyone who's misplaced the original charger for a 19V laptop or monitor can grab this as a reliable replacement without paying brand-name prices. Buy Now at Newegg

Handy for anyone building solar setups or battery projects where input voltage swings above and below your target output, since it adjusts automatically instead of requiring separate boost and buck circuits. Buy Now at Newegg

This power adapter is built specifically for Xreal Air AR glasses, so it's a straightforward pick if you already own the headset and need a dedicated charging solution rather than hunting for a compatible generic one. It's currently priced at its $40 list, so there's no discount factored in right now. Buy Now at Best Buy

Home theater setups, routers, and other gadgets that shipped with a lost or fried adapter are exactly what this covers, thanks to the multiple voltage settings and swappable tips. Newegg has it at a price that makes sense for a one-time fix rather than tracking down the exact original replacement. Buy Now at Newegg

Newegg has the Yustda AC-9 AC/DC Power Adapter for anyone whose original charger died or went missing and just needs a straightforward replacement without hunting down the exact brand-name part. Buy Now at Newegg

Anyone building or repairing electronics that need two separate voltage rails can skip buying two units, since this transformer outputs 44V and 24V from a single housing. Buy Now at Newegg

Anyone who's misplaced the original charger for their Powertron PA1024-2DU device can grab this compatible replacement instead of hunting down a discontinued part, and Newegg backs it as a straightforward swap-in option. Buy Now at Newegg