Power Management Deals

A variable voltage transformer lets you manually adjust AC output from 0 to 130V, which is useful for testing electronics, running equipment rated for different voltages, or gradually powering up older gear. The 2,000VA rating gives you enough capacity to handle most bench work or small appliances without tripping the unit. Buy Now at Newegg

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

Handy for electronics hobbyists or anyone building a bench setup who needs to power multiple circuits at different voltages from a single source — the LM2596 chipset is a well-regarded buck converter, so you're getting reliable step-down regulation without building the circuitry yourself. Buy Now at Newegg

Handy for DIY electronics projects where you need to power a 12V component directly from a standard AC outlet without a bulky external adapter. Buy Now at Newegg

Useful for anyone running 12V car accessories or CB radios from a standard wall outlet, since it converts household AC power to the 12V DC that most automotive electronics require. Buy Now at Newegg

Bench power supply units at this price point usually top out around 300W to 400W, so the 600W capacity here gives you more headroom for power-hungry projects without stepping up to a much more expensive unit. A solid option for electronics hobbyists, engineers, or repair technicians who need adjustable voltage and current output on the workbench. Buy Now at Newegg

Useful for anyone running 12V car accessories or CB radios from a standard wall outlet, since it converts household AC power to the 12V DC that most automotive electronics require. Buy Now at Newegg

Covers the plug types you'll encounter across Europe, the UK, Australia, and more, making it a solid grab for frequent international travelers or anyone heading abroad for the first time. At $14, that's 65% off the $40 list price. Buy Now at Walmart

Useful for electronics hobbyists, engineers, or anyone building or repairing circuits that need to convert AC power to a stable DC output. Buy Now at Newegg

Utrai bundles a 4,000-amp jump starter with a 150-PSI air compressor into one unit, which makes it a practical keep-in-the-trunk tool if you want to handle a dead battery or low tires without needing a second device. At $53, it's $47 off the $100 list price. Buy Now at Walmart

Handy to have around if you do any DIY electronics work involving USB-C PD negotiation, since these modules let you pull a specific voltage from a PD charger without needing a full microcontroller setup. Buying a 10-pack keeps the per-unit cost low, which makes sense if you're building multiple projects or just want spares on hand. Buy Now at Newegg

Useful for anyone traveling internationally who needs to charge devices across different outlet types, since it consolidates multiple plug configurations into one compact unit rather than packing country-specific adapters for each destination. Buy Now at Newegg

A bench staple for electronics hobbyists and DIYers, this adjustable buck converter lets you step down a DC voltage to whatever level your project needs, with enough output capacity to handle most small motors, microcontrollers, and LED strips. Buy Now at Newegg

Useful for anyone who wants a single device to handle both a dead battery and a flat tire without needing a second car or a separate compressor, and at $54 it's $55 off the $109 list price. Buy Now at Walmart

Avapow's 6,000A peak current rating puts this well above the typical consumer jump starter, making it a reasonable pick for anyone who needs to jump-start larger vehicles like trucks or SUVs, or wants a unit that can handle repeated use without draining. At $76, it's $84 off the $160 list price. Buy Now at Walmart

Wolfbox 4,000A Car Jump Starter for $90, down $80 from the $170 list price. A 4,000A peak current rating handles most gas engines and diesel trucks, so this is a reasonable pick if you want a portable jump starter that can handle larger vehicles without calling for a jump from someone else. Buy Now at Walmart

A handy buy if you're running multiple 12V devices indoors and want to avoid burning through batteries or dealing with separate adapters for each one. Buy Now at Newegg

Useful if you're running low-voltage DC equipment, like security cameras or doorbells, that needs a dedicated step-down transformer rather than a wall adapter. Buy Now at Newegg

Designed for people who need to power a laptop or device from a vehicle's DC power source, like in a fleet vehicle, emergency services rig, or any mobile work setup where AC outlets aren't available. Buy Now at Newegg