Product Price Voltage (V) Wattage (W) Speed Range (RPM) Heating Temperature (°C) Battery Life (hours) Chuck Size (mm) Weight (lbs/kg) Warranty (years)
DEWALT DCK226E2WCW210B
US
£373.80 20V Two 1.7Ah POWERSTACK batteries

This cordless combo kit includes a hammer drill driver, a 5 in random orbital sander, two 1.7Ah POWERSTACK batteries, and a charger. It suits DIY users and tradespeople who need portable drilling and sanding capability in one kit.

★ Ideal for

It suits the longest-battery-life question because it includes two POWERSTACK batteries, allowing one battery to be charged while the other is in use.

DEWALT DCK940D2WDCW210
US
£588.65 20V DC 300 UWO 0-650/0-2000 1/2 in 44 lb

This 20V MAX nine-tool cordless combo kit includes a drill driver, impact driver, saws, grinder, oscillating tool, right-angle drill, speaker, work light, two 2 Ah batteries, charger, and storage bags. It suits DIYers and tradespeople who need a broad set of portable cordless tools in one package.

★ Ideal for

This product is not a heated drill and has no stated battery-life rating or heating feature; its included 2 Ah batteries are better suited to general cordless tool use than identifying the heated drill with the longest runtime.

FLEX FX1171T-2B
US
£117.72 24 V 0-550/0-2,000; turbo 0-700/0-2,500 1/2 in 3.7 lbs 5 years

The FLEX FX1171T-2B is a 24 V brushless drill driver with a metal 1/2 in ratcheting chuck, turbo mode, anti-kickback protection, and LED lighting. The kit includes 2.5 Ah and 5.0 Ah lithium-ion batteries, a 160 W fast charger, and a carrying case, making it suitable for demanding DIY and professional drilling tasks.

★ Ideal for

This product suits the question because its kit includes a 5.0 Ah battery and FLEX states that THERMA-TECH heat management provides 25% longer runtime, although no specific battery-life duration was published.

Milwaukee 3403-22
US
£139.07 12V 0-450 / 0-1550 1/2 in 2.5 lb 5 years

The Milwaukee 3403-22 is a compact 12V brushless drill/driver with a 1/2 in all-metal chuck, two-speed operation, and 400 in-lb of torque. It includes 2.0Ah and 4.0Ah batteries, a charger, and a contractor bag, making it suitable for professionals and DIY users working in tight spaces.

★ Ideal for

This model suits the question because it includes a 4.0Ah extended-capacity battery and is described as providing the most runtime in its class, although an exact runtime duration was not published.