
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
- 12V, 100Ah nominal capacity
- 1,280Wh max energy
- Bluetooth-compatible
- Low-temperature protection
- Weight: 10.48 kg
- Dimensions: 26 x 16.8 x 21.4 cm

At Woot, get this Energizer MAX Alkaline AA Batteries 48-Pack for $20. It's the best price we could find by $5. Shipping is free for Prime members. Deal ends July 1. Buy Now at Woot! An Amazon Company

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
- 50% more power
- longer lifespan
- compact size
- durable, overmolded base
- LED charge indicator
- compatible with 20V MAX tools and chargers
- Model: DCBP320-2

Amazon offers this Greenworks battery 2-pack with charger for $105. That's a 34% savings. Shipping is free. Buy Now at Amazon
- Two 4.0Ah (96Wh) 24V lithium-ion batteries included
- Dual-port rapid charger included
- Compatible with Greenworks 24V and 48V (2x24V) products
- Built-in USB port; 24,000mAh power bank capacity per battery
- On-board battery charge indicator
- 3-year battery and charger 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 Rechargeable 9V Battery 4-Pack with Charging Cable is $18.99 at Amazon with Subscribe & Save. That's a $5 savings. Shipping is free for Prime members. Buy Now at Amazon

AliExpress offers the Eco-Worthy 3,584Wh 12V 280Ah LiFePO4 RV Battery for $243.25 (reduced from $278.25) in Orange via promo code "AEDN35" with free shipping from a U.S warehouse.
It's also available in Gold for $360.64 (reduced from $401.14) via promo code "AEDN50". Buy Now at AliExpress
- LiFePO4 battery supports 6,000+ deep charge cycles
- 12V 280Ah capacity with up to 3,584Wh energy
- Expandable up to 57.3kWh with series and parallel setup
- Built-in 200A BMS protects against overcharge, discharge, and short circuit
- Metal case improves fire resistance and structural durability
- Bluetooth monitoring with low-temperature charging protection
- Shock- and vibration-resistant design for mobile applications
- Low temperature cut off
- Deep cycle for campers and trailers

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

You'd pay $5 more at Amazon. Buy Now at B&H Photo Video

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

Amazon offers the Panasonic CR2032 3-Volt Long-Lasting Lithium Coin-Cell Batteries 10-Pack for $6.99. That's $10 below the original price. Shipping is free for Prime members. Buy Now at Amazon
- Child Resistant
- 225 Milliamp Hours
- Model: CR2032P/10BW

Amazon is offering an extra 40% off over 200 packs of batteries from Rayovac, Energizer, and Eveready when you checkout via Subscribe & Save. Prime members will get free shipping, too.Â
Buy this if: You regularly stock up on batteries and want to lock in a lower per-unit cost across multiple sizes and brands. Shop Now at Amazon

Use promo code "USAFF5" to drop the price. That makes for a total savings of $65 off. Shipping is free. Buy Now at AliExpress

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

You'd pay $7 at Walmart. Buy Now at Amazon

At eBay, get the Refurb Greenworks 80V 2A Standard Charger for $30. That's a savings of $20. It's backed by a two-year Allstate warranty. Buy Now at eBay

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