Discount Battery Charger & Accessory Sales and Deals

As part of Home Depot's Labor Day Sale, this Ryobi 2.0Ah battery is free with a number of different power tools. You can choose to bundle it with a charger, ratchet or screwdriver kits, or other tools, which start as low as $40. The battery works with the Ryobi USB Lithium system and can also charge mobile devices, with a built-in LED fuel gauge to track remaining power. Shipping is free and the deal ends on September 9. Shop Now at Home Depot

This Milwaukee M12 5.0Ah battery pack comes free with the purchase of a selection of different M12 cordless tools right now at Home Depot. It's worth $129 and can be bundled with a Milwaukee power tool that costs as little as $199. Shipping is free on all bundles. This battery delivers 25% more power, runs 25% cooler, and offers 25% more runtime than standard Milwaukee battery packs, and it works across more than 125 M12 cordless tools. The deal ends on September 9. Shop Now at Home Depot

Today only, this SmallRig VB99 Mini V-Mount Battery is $110 at B&H Photo Video. That's $140 off original list, $100 under our mention from two weeks ago, and the lowest price we've seen. It  supports up to a 14A draw and includes D-Tap, USB-C, USB-A, and dual barrel outputs for powering cameras, gimbals, and drones. It can fast charge via USB-C PD in under two hours and has a built-in OLED display for checking remaining capacity. Free shipping applies.  Buy Now at B&H Photo Video

At Amazon, clip the on-page coupon to get this 12V 6A Auto Battery Charger for $11. It's the best deal we've seen for this model. Shipping is free for Prime members. Buy Now at Amazon

Apply promo code "SUNSHINE20" to get this open-box Milwaukee M12/M18 Multi Voltage Charger for $15. It's the best deal we could find by $66. Coupon ends July 1. Buy Now at eBay

View the battery & charger stater kit and click 'shop this offer' to view the list of free power tools to choose. Depending on which you select, total savings can be as much as $238 off. This deal ends August 1. Shop Now at Home Depot

This Makita 18V LXT starter pack, which includes two 4.0Ah batteries and a charger, is $99, down from $168. This price is at an all-time low on Amazon. Free shipping applies.  Buy Now at Amazon

At Amazon, get this 12V 6A Auto Battery Charger for $11.50 when you add it to your cart and proceed to checkout. It's the lowest price that Amazon has charged for this battery charger. Shipping is free for Prime members. Shop Now at Amazon

A replacement power adapter for the Denon Heos 7 wireless speaker, which you'd need if your original has failed or gone missing and you want to avoid sourcing a third-party substitute that may not match the correct voltage specs. Buy Now at Newegg

Designed for Logitech Harmony users whose original power adapter has been lost or damaged, this replacement handles the AC-to-DC conversion the IR blaster needs to function without requiring you to track down an OEM part. Buy Now at Newegg

A straightforward replacement adapter if your Crestron CEN-IDOC dock has lost its original power supply, saving you from hunting down an obscure OEM part. Buy Now at Newegg

A basic, no-frills charger that works well as a spare or replacement for any device that draws 5W or less, like older phones, earbuds, or smart home accessories. Buy Now at Newegg

Handy if your robot vacuum uses a PA04-compatible battery and the original has started holding less charge, since this gets your vacuum running again without replacing the whole unit. Buy Now at Walmart