DeWalt DCB204 20V Max Battery Pack

20V Max / 4.0 Amp-hr Premium XR Lithium-Ion Battery Pack.
Specifications:
Rating: 20 Volt Max / 4.0 Amp-hr
Features:
Premium XR Lithium Ion pack provides up to 33% longer run-time than standard 20V Max battery packs.
3-LED Fuel Gauge System allows immediate feedback on the state of charge.
No memory and virtually no self-discharge for maximum productivity and less downtime.
Individual pack weights 1.42 lbs allowing user maximum run-time in a lightweight battery.
Standard Equipment:
20V Max Li-Ion Battery Pack
Optional Accessories:
DeWalt DCB101 12V Max / 20V Max Battery Charger.