Deals on Discount Batteries

This Milwaukee starter kit includes two high-output batteries and a charger for $188 at Amazon. You'd pay $299 for the same kit today at Home Depot, so this is a great deal. The batteries deliver 50% more power and run 50% cooler than Milwaukee's standard M18 RedLithium XC packs. Buy Now at Amazon

Lithium AAs last longer than alkaline in high-drain devices like cameras, flashlights, and outdoor gear, making this 12-pack a reasonable stocking-up option. Apply coupon code "XLWKL9WU" for a savings of $12. Deal ends September 1.  Buy Now at Amazon

Portable LiFePO4 (lithium iron phosphate) batteries are a common pairing with small solar setups, used for storing energy from panels to power lights, fans, or small devices off-grid. After factoring in the $$23.42 import charges and $2 payment processing fee, it's a low by $5. Buy Now at Alibaba

Subscribe for this price on these Duracell batteries.  Shipping is free for Prime members.  You'd pay around double this price elsewhere; it's also at its best price of the past few years on Amazon. Buy Now at Amazon

At $12.24 with Prime, these are 20% off their regular price of $15 and the lowest price we've seen this year. The pack includes a 10-year leak-free shelf life. Buy Now at Amazon

Amazon Basics AAA Alkaline Batteries drop to $11 with Prime, down from $14. Even better, check out with subscribe and save to drop the price to $10.43 and $0.29 per battery. The 36-pack carries a 10-year shelf life. Buy Now at Amazon

Amazon's Subscribe & Save promotion covers a wide range of household batteries from Energizer and Rayovac, including everyday AA and AAA packs as well as specialty hearing aid and lithium coin batteries. Shop Now at Amazon

Amazon offers the Amazon Basics AAA Alkaline Industrial Batteries 250-Pack for $31.43 when you clip the coupon and subscribe.  That's its best price of the past few years.  Shipping is free. Buy Now at Amazon

Update: The price has changed to $9.99 since this was originally published.

At Amazon, check out with Subscribe & Save to get this Bonai CR123A 3V Lithium Battery 12-Pack for $9.49. It's the best price Amazon has charged for this multipack. They're rated for a 10-year shelf life and can operate in temperatures from -40°F to 140°F, making them suited for outdoor sensors and flashlights. Buy Now at Amazon

Compact enough to replace a bulky laptop brick while still pushing 70W across three ports, which suits anyone juggling a phone, tablet, and laptop off one outlet. Apply coupon code "NIFH6GO2" for a total savings of $30. This deal is for Prime members only. Buy Now at Amazon

This 48-pack of Great Value AAA batteries is $12.88 at Walmart, down from $15, working out to about 27 cents per battery. It's cheaper than any similar 48-pack at Amazon or Woot. A 10-year shelf life is rated for storage. Buy Now at Walmart

At Amazon, get the Energizer Alkaline Power AAA Batteries 20-Pack for $11 when you check out with Subscribe & Save. It's the best deal we've seen for this multipack. Shipping is free for Prime members. Buy Now at Amazon

At Home Depot, this RYOBI ONE+ 18V / 40V Starter Kit is $89, down from $307. It includes an 18V 2Ah battery, a 40V 2Ah battery, and a dual platform Hyper Charger that can charge either battery in 25 minutes. Both batteries work with any RYOBI ONE+ or 40V tool. Home Depot also offers free shipping on this bundle. Buy Now at Home Depot

This ECO-Worthy 12V 100Ah LiFePO4 battery drops to $134 when you apply promo code "MYUSAFF12" at AliExpress. That's within a couple bucks of the price we saw around Black Friday. It ships from the United States with free shipping and a rated capacity of 1,280Wh, Bluetooth connectivity, and low-temperature protection. Buy Now at AliExpress

Amazon's Subscribe & Save promotion knocks 40% off a first subscription order on more than 200 qualifying battery items. The discount spans brands like Energizer, Rayovac, and Eveready, covering everything from AA and AAA batteries to specialty hearing aid and coin cell batteries. Shop Now at Amazon

Amazon offers the DeWalt 20V MAX XR Powerstack 3.5Ah Battery 2-Pack for $134. That's half of what you'd pay elsewhere. Shipping is free. Buy Now at Amazon

Handy for households that run through AA or AAA batteries regularly in remotes, toys, or flashlights, this 8-bay charger handles both sizes and connects via USB. Apply coupon code "HHRE8UT5" for a savings of $7. Buy Now at Amazon

Useful for anyone who travels with multiple devices and wants to consolidate charging into a single wall plug, with the foldable prongs making it more pocket-friendly than most 100W chargers. Prime members can apply coupon code "NVLEMW3N" for a savings of $20. Buy Now at Amazon

A handy tool for anyone who wants to diagnose a weak or failing battery before getting stranded. Apply coupon code "ZKP5OBGP" for a savings of $31. Buy Now at Amazon