This 6 Amp charger offers the most versatility for all of your charging needs. All Lithium Ion batteries within our Compact 12V, 20V MAX and heavy-duty DEWALT FLEXVOLT battery range are compatible with this charger. The new Stage 1 and Stage 2 LED indicators communicate more about the batteries state of charge than those without. The Stage 1 LED blinks until the battery is approximately 80% charged. It then stays solid and the Stage 2 LED blinks until the battery is fully charged. The 6 Amp charger also features through-hole mounts, secure latching and double insulation. Compatible with all 12V MAX, 20V MAX and FLEXVOLT batteries Stage 1 and 2 LED format communicates more to the user about the batteries state of charge Latching for safe portability with battery installed Through-hole wall mounts Double-insulated design