
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
- 12V, 6A output
- Compatible with AGM, gel, LiFePO4, and lead-acid batteries
- Digital display: real-time voltage, current, charge percentage, and status
- Pulse repair for mildly sulfated batteries
- Protections: reverse connection, short circuit, over-temperature, over-current
- Universal 100-240V input; operating range -10°C to +45°C

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
- Compatible with M12 and M18 Milwaukee battery platforms
- Model: 48-59-1812

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
- Includes one 2.0 Ah and one 4.0 Ah 18V lithium-ion battery
- Includes a charger for both batteries
- Compatible with over 300 RYOBI 18V ONE+ tools

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
- Includes two 18V LXT lithium-ion 4.0Ah batteries and a charger
- Battery reaches full charge in 90 minutes
- Provides up to 35% more run time per charge compared to the BL1830 battery
- Integrated LED indicator shows battery charge level
- Works in extreme temperatures down to -4°F
- Backed by a 3-year limited warranty

As one of Home Depot's daily deals, get this DeWalt 20V MAX 4Ah Lithium Ion Battery 2-Pack for $60. That's $12 less than our last mention and the best deal we've seen for a 2-pack. Shipping is free. Deal ends today. Shop Now at Home Depot

This battery tester drops to $4.74, down from $5.93. It supports AA, AAA, C, D, 9V, and 1.5V cells, including rechargeable batteries, with an LCD readout. Shipping is free on Amazon Haul orders of $25 or more. Shop Now at Amazon
- Compatible with AA, AAA, C, D, 9V, and 1.5V batteries
- Supports rechargeable batteries
- LCD digital display
- Capacity meter for charge level reading
- Designed for home use

It's the best deal we've seen for these batteries. Each battery includes a 3-LED fuel gauge and is compatible with the full 20V MAX tool and charger lineup. Shop Now at Amazon
- 4 Amp hour (80 Watt hour) capacity provides extended runtime for the DEWALT 20V battery
- DEWALT battery has the same size and weight as DCB230 20V MAX* compact 3Ah battery
- Lighter weight with same capacity as DCB204 4Ah battery
- Compatible with 20V MAX* tools and chargers
- Includes fuel gauge 3-LED charge indicator

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

Grab these Rayovac 2032 batteries at their best-ever price. Most merchants charge three times this price. Shipping is free for Prime members. Buy Now at Amazon

Amazon offers the Energizer Lithium Coin Battery 2-Pack for $3.32 when you opt for Subscribe & Save. That's the lowest price it's been listed at and a buck less than what you'd pay elsewhere. Prime members get free shipping. Buy Now at Amazon

Amazon has this rechargeable AAA battery 12-pack for $6.43 after an on-page coupon and with subscription. That's $19 below the original price and the lowest it's ever been. Shipping is free for Prime members. Buy Now at Amazon

Home Depot offers the DeWalt 20V MAX Lithium-Ion 3.0Ah Battery for $38. That's a savings of $91 and you'd pay $64 elsewhere. Shipping is free. Buy Now at Home Depot

Amazon offers the Energizer 2032 3V Lithium Batteries 10-Pack for $6.59 with Subscribe & Save. That's a 65% savings and $3 below our mention from last December. Shipping is free for Prime members. Buy Now at Amazon