DEWALT delivers huge value with this 2-pack, priced only marginally higher than a single device. These lithium-ion batteries are compatible with all tools in the DEWALT 20-Volt Max product line, giving you the long-lasting power and versatility required at remote job sites. Each 3 Ah battery weighs just 1.42 lbs. and has a built-in LED fuel indicator so you know how much juice remains on each charge.