This 6 Amp Charger offers the most versatility for all of your charging needs. All Li-Ion batteries in our compact 12V, 20V MAX, and heavy-duty DEWALT FLEXVOLT battery line up are compatible with this charger. The new Stage 1 and Stage 2 LED indicators communicate more about the batteries' charging status than those without. The Stage 1 LED flashes until the battery is approximately 80% charged. It then remains solid, and the Stage 2 LED flashes until the battery is fully charged. The 6 Amp Charger also features through-hole mounts, secure latching, and double insulation.