Deals on Discount Batteries

A straightforward option for replacing a lost or failing laptop power adapter, particularly if you need a 135W output and want to avoid paying manufacturer prices for an OEM replacement. Buy Now at Newegg

A straightforward fix if your Jebao SW-2 wave maker's original power adapter has failed or gone missing, since replacement adapters for aquarium equipment can be surprisingly hard to track down. Buy Now at Newegg

Designed specifically for MSI GF63 laptops, this 120W adapter covers you if your original charger fails or you need a spare for a second location. Buy Now at Newegg

Handy to have if you own a 21V electric ratchet wrench and need a replacement or spare charging adapter, since losing the original usually means the tool sits unused. Buy Now at Newegg

Replacement batteries for UPS units like the CyberPower 1500 AVR aren't always easy to source, so having a direct match by voltage and amp-hour rating takes the guesswork out of compatibility. Buy Now at Home Depot

Update: The price has changed to $25.98 since this was originally published.

Useful if you have multiple Apple devices and want a single charging spot for your iPhone, AirPods, and Apple Watch without a tangle of cables, and currently about $1 off the list price. Buy Now at Amazon

Update: The price has changed to $29.99 since this was originally published.

A compact option for anyone running an Apple ecosystem (iPhone, AirPods, and Apple Watch), since it charges all three simultaneously from a single folding unit that collapses flat for travel. At $30, that's $10 off the $40 list price. Buy Now at Amazon

These adapters let you use standard AA Eneloop rechargeables in devices that need C or D batteries, handy if you've already got a stash of AAs and don't want to buy separate C/D rechargeables. At $14.30, that's about 43% off the $25 list price. Buy Now at Amazon

Musicians and gearheads running multiple pedals off a single power source will appreciate this, since it cuts down on battery swaps and the tangle of individual adapters cluttering your board. Buy Now at Newegg

This charger works for both 12V and 24V systems, so it covers cars, motorcycles, boats, and larger equipment like RVs or tractors from a single unit. Walmart has it for $39, which is $31 (about 44%) off the $70 list price. Buy Now at Walmart

Handy for keeping a car, motorcycle, or boat battery topped off during winter storage or infrequent use, since the smart charger stops feeding power once it's full. Walmart has it for $2 off the $16 list price. Buy Now at Walmart

These come in handy for smoke detectors, guitar pedals, and other 9V devices you don't want to think about often, and the 6-pack setup means you're stocked for a while. At $12.99, that's $6 off the $18.99 list price at Walmart. Buy Now at Walmart

Anyone burning through AA batteries for remotes, game controllers, or kids' toys can skip the disposable aisle with this 8-bay charger and battery combo, and at $40 that's $10 off the usual $50 price. Buy Now at Walmart

Handy for households running through AAA batteries constantly, whether for remotes, toys, or small electronics, since you can recharge them instead of buying disposables over and over. The 12-pack runs $15.99, about $7 off the $22.99 list price. Buy Now at Walmart

These are a decent backup option for remotes, clocks, and other low-drain gadgets around the house, and at $9 you're only saving $1 off list. Buy Now at Walmart

Stocking up on AA and AAA batteries in one 40-pack makes sense for households that go through them fast, whether it's remotes, toys, or flashlights, so you're not stuck without one on hand. Buy Now at Walmart

Handy for anyone who burns through batteries in remotes, game controllers, or kids' toys, since you can recharge instead of tossing a fresh set in the trash every few weeks. Buy Now at Walmart

This fuse suits boat owners and DIY marine electricians who need short-circuit protection between a battery and its main power source, since MRBF terminals mount directly onto battery posts without extra wiring. Rated at 350A, it's built for higher-draw setups like trolling motors or larger inverter systems rather than small accessory circuits. Buy Now at Home Depot

Handles both 12V and 24V systems, so it works for cars, boats, or lawn equipment sitting unused between seasons, and Walmart has it for $10 off the list price. Buy Now at Walmart

This heavy-duty stud fits panel-mount applications where you need a reliable 400A, 600V connection point, making it a fit for electricians and marine or industrial power setups. It's priced at $20.03, about $7 (26%) off the $27.19 list price. Buy Now at Amazon