4 amp Battery Charger + Maintainer

Regular price $69.99

  • Prolong your battery’s life and take depleted batteries from dead-to-start in just 2 hours.
  • Ensures an optimal charge on all types of 6V, 12V and Lithium-Ion vehicle batteries.
  • Features a maintenance mode to keep stored batteries topped off between uses.
  • Includes alligator clamps for periodic charging, ring terminals for semi-permanent battery attachment, and switching between the two is safe and easy.
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All products ship from our warehouse in Southern California and most orders will arrive within 3 days with the exception of orders that contain heavy items or hazardous materials which can take up to 5 days.

Most items are in stock and will ship on the same day if the order is placed Monday - Friday before 2:30PM Pacific Standard Time, or on the next business day if the order is placed after 2:30PM Pacific Standard Time.


Part #: DRMC4A

Battery Charger/Maintainer

Prolong your battery's life with proper charging and maintenance. The Duracell 4 Amp Charger/Maintainer can take depleted batteries from dead-to-start in just 2 hours. 

The Charger/Maintainer's multi-stage charging protocol ensures an optimal charge on all types of 6V, 12V, and Lithium-Ion vehicle batteries, and features a maintenance mode that's ideal for keeping stored batteries topped off between uses. 

The 4 Amp charger/maintainer features a backlit LCD screen for best in class user experience, and is rated IP65 for weatherproof construction. 

The charger includes alligator clamps for periodic charging, as well as ring terminals for semi-permanent battery attachment (ideal for maintenance). Switching between clamps and rings is safe and simple thanks to the charger's quick-connect cable system.

Purchase replacement Ring Terminals 

Purchase replacement Cable Clamp

User Manuals

English | French | Spanish

prop 65 warning WARNING: 

This product can expose you to chemicals including Di(2-ethylhexyl) Phthalate (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm.  For more information go to www.P65Warnings.ca.gov.


General Questions

NYes. Once the battery is charged, you can leave the maintainer connected to the battery to keep the battery in a charged state, so it will be ready when you are. You only need to unplug the unit from the wall before starting your vehicle.

You would need to connect the ring terminal to the bolt that comes out of the connector on your battery, not the battery post itself.

The charger has safety features built in. If the charger can not detect that it is connected to a battery, then it will not send a charge through the cables. Your battery must have at least 3 volts in order to be able to be charged.

The charger has safety features built in. If the charger can not detect that it is connected to a battery, then it will not send a charge through the cables.

No, but the higher the Ah the battery is, the longer it will take to charge the battery.


There is a protective sticker on the LCD screen; Please make sure it has been removed.

The charger reconditions the battery as it charges. It can take up to 24 hours to fully charge the battery. Once the battery is fully charged, the bar will no longer flash.

The bars on the LCD screen will be solid, instead of flashing.

Auto shops test your battery for current under load. It will only show if the car will start. If your battery is old or has not been kept charged it is possible that it is weakening.

Still have questions?

If we still haven't answered your question, you can contact us below and we will get back to you as soon as possible.

Customer support: 800.300.1857

Send a message: info@duracellpower.com