Stanley BC2509 25 Amp Automatic Battery Charger

• 25 Amp Automatic Battery Charger/Maintainer
• Automatically selects charge rate from 0 to 25 AMPS to maximize battery life, charge speed and maintenance
• 3-Stage high-frequency automatic rapid charge with Float Mode Monitoring
• 75 amp Patented Engine Start. Helps start most vehicles in one minute.
• Alternator check provides alternator diagnostics
• Digital Lcd Screen
• Quick Start Timer
• 1-Touch Technology
• 3 Stage Charging

What can you say...It's as advertised. Plug in five easy steps, and off you go! Easy instructions. I don't know about three hours. I put a dead marine battery on charge and in the morning it was charged. Approximately twelve hours. I waiting to try the rejuvenation function. great product so far.

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