Advanced 12V max charger design –gets users power ready in a hurry, with dual-mode charging (first 80% in fast-charging mode, remaining 20% in long-life mode), indicator lights and more Fast-charging operation – fully charges a spent 12V max 3.0 Ah lithium-ion battery in approximately 50 minutes Regulated dual-mode charging – designed to securely charge the battery fast The first 80% of the charge is in fast-charging mode, the remaining 20% is in long-life mode Battery-status indicator – provides indication if charger is in fast-charging mode or long-life mode, and when charging begins, is complete, or is pending charging due to high temperatures Bosch 12V Max chargers are covered by a three year limited warranty