Chrome Battery has a great selection of the most reliable types of 4.2 AMP 6-Step battery Chargers/Maintainers.

Xtend Chargers offers our 4.2 Amp Charger to replace your existing battery charger and bring your battery back to life. Our fully automatic 4.2 AMP Xtend Chargers provide a charge when needed, then stops charging when battery is fully-charged and the built-in circuit protection guards against overcharging and reverse polarity. This brilliant 1-4.2amp charger, charges at 1 or 4.2amps, it just knows what amp to charge at with a built in intelligent chip. If the battery only needs a top charge the intelligent chip will only deliver 1 amp for a short time till fully charged. But if the battery is deeply drained the chip tells the charger to go to 4.2 to bring the battery to a full charge. WHAT A SMART CHARGER!

• Microprocessor controlled- multi stage charging for added precision, safety and battery life
• Designed for safety and to protect against reverse battery hookup, overheat/overcurrent and over-charging of batteries
• Bring batteries back to life as well as contributes to the health and longevity of your battery
• For use on 6V or 12V battery systems including SLA, AGM and Gel Batteries
• Automatically switches to float-mode when battery is fully charged to prevent over-charging
• Creates ease of use with three LED indicator lights. Yellow for charging – Green for fully charged/float-mode. Red for Faulty Battery
• Guaranteed to meet or exceed original specifications