The DCD999 delivers up to 42% more power when paired with a DCB546 XR FLEXVOLT 6Ah battery versus a DCB184 18V XR 5Ah battery. Engineered for speed and durability, other features include an all metal 3 speed transmission, DEWALT built brushless motor and full metal ratcheting chuck with carbide inserts. Features: TOOL FREE CHUCK - Full metal with carbide inserts for increased grip strength; LED WORK LIGHT - 3 modes including 20 minute torch feature; IMPROVED SIDE HANDLE - More control and safety in high demand applications; 3 SPEED TRANSMISSION - All metal construction for increased durability; BRUSHLESS MOTOR - For long runtime and tool life; FLEXVOLT ADVANTAGE TECHNOLOGY - Take advantage of more power; Specifications: Voltage 18 / 54 V Max Torque 112 Nm Max Drilling Capacity - Wood 55 mm Max Drilling Capacity - Metal 15 mm Max Drilling Capacity - Masonry 13 mm No Load Speed - Drill 0 - 450 / 1300 / 2000 rpm No Load Speed - Hammer 0 - 500 / 1500 / 2250 rpm Beats per minute 38,250 bpm Weight 3.7 kg DeWalt 18V 5.0Ah Premium Battery DCB184-XE XR FLEXVOLT is a range of 54V power tools that offer runtime and performance that has never been seen before - for the first time, professional tradesmen can reliably undertake heavy-duty construction applications without the need for mains power. This innovation means that you can have 54V power across a whole range of tools without the inconvenience of a cable. DEWALT XR FLEXVOLT is the only battery on the market that can switch from 54V to 18V, making it backward-compatible with your existing XR powertools. Features: 6.0Ah XR FLEXVOLT Battery; Voltage steps up to 54V to deliver unprecedented power; Compatible with all 18V XR and 54V XR FLEXVOLT tools; Compatible with all 18V XR chargers; DeWalt 10.8V - 18V XR Li-Ion Multi Voltage Battery Charger DCB115-XE Features: Easy to use, quiet and exceptionally stable; DeWalt charger plugs directly into the wall. ; It features a built-in diagnostics system with an LED indicator that communicates battery charging, battery charged, power line problem, replace battery and battery too hot or cold to charge; Charges DeWalt 10.8v 14.4v 18v Li-ion slide batteries; Wall mountable design; Specifications: Part No DCB115-XE Name DEWALT XE multi-voltage charger 10.8v 14.4v 18v