Craftsman V20 2.0 Ah Battery vs Craftsman V20 4.0Ah Battery 2-Pack

Buy the 2.0 Ah single battery if you need one compact pack to top up a light-duty V20 tool or replace a worn pack. Buy the 4.0 Ah two-pack if you run saws, grinders or blowers and want long runtime plus a spare on the charger. Both are genuine V20 packs with the same slide-on fit, 3-year limited warranty and no memory effect; the 4.0 Ah cells are higher-capacity and add a 3-LED charge gauge, while the 2.0 Ah is lighter in the hand for drills and drivers. Owners of the 4.0 Ah packs report longer runtimes but more weight, and the 2.0 Ah is the pack most often called out for short runtime in high-draw tools.

• Choose the CRAFTSMAN V20 2.0 Ah if you want one light pack for drills, drivers and small saws, or a spare to keep a single tool running.
• Choose the CRAFTSMAN V20 4.0 Ah two-pack if you run high-draw tools like circular saws, grinders or blowers and want two long-running packs with a charge gauge.