Best AGM Battery Chargers: Restore Your Vehicle Batteries

Save time and money with these efficient AGM battery chargers

TheDrive and its partners may earn a commission if you purchase a product through one of our links. Read more.

Over time, vehicle batteries will lose their charge, especially if you don’t use them on a daily basis. However, if you find yourself with a low or dead battery, you don’t have to spend cash on a brand new one. An AGM battery charger can restore power back to your cells, so you can drive another day. If you want to save some money and keep your battery going, consider these AGM battery chargers.

  • Best Overall
    NOCO Genius Gen1 AGM Battery Charger
    Summary
    Summary
    A powerful, rugged, and portable 10-amp AGM battery charger. It's designed to be used in the garage, house, or marina.
    Pros
    Pros
    It’s able to charge batteries quickly and efficiently, features a smart firewall to prevent fires or overcharging, and it’s waterproof.
    Cons
    Cons
    The screws holding it together aren’t the most durable, and it’s heavy and bulky.
  • Best Value
    Motopower Automatic Smart AGM Battery Charger
    Summary
    Summary
    A compact battery charger that comes with up to 12 volts of charge and the capability to detect and warn you of a dead battery.
    Pros
    Pros
    It’s simple to set up and monitor and gives you the freedom to leave it be to do its job. Plus, it has a built-in safety feature and seven charging stages.
    Cons
    Cons
    The lead cables could be a little longer, and it may not work that quickly or efficiently on larger vehicles.
  • Honorable Mention
    Schumacher SC1281
    Summary
    Summary
    A robust and easy to transport AGM battery charger designed to power larger batteries and big vehicles.
    Pros
    Pros
    The casing is constructed out of durable materials, it’s capable of charging batteries in a short amount of time, and it features a large screen to monitor the level of the battery it’s charging.
    Cons
    Cons
    It’s heavier than other battery chargers, coming in at 13 pounds. The clamps could also match the sturdy nature of the body.

Tips

  • Always clean the battery cables before you use or charge them. Debris and dirt can build up under the clamps and reduce the amount of energy transfer.
  • If you spot a white powder on the battery terminals, it is dried sulfuric acid. The powder can burn your skin, so consider wearing gloves when handling the battery.
  • Make sure you know which cable is the positive and which one is negative to properly charge your battery. A “plus” stands for positive while a “minus” stands for negative. Many are also color-coded to make things easier.

FAQs

Q: What does AGM stand for?

A: AGM means absorbed glass mat, and it’s a specific type of lead-acid battery. It absorbs the sulfuric acid with a very fine fiberglass mat and makes the battery spill-proof. They typically have a much lower internal resistance and are capable of delivering high currents on demand.

Q: Will jump-starting a vehicle charge the battery?

A: Technically, yes, but it isn’t a full charge. You may be able to drive the vehicle until you turn it off again, but eventually, it may die again. Battery chargers are designed to charge the battery completely.

Q: How do I clean the battery terminals?

A: To properly clean away any sulfuric acid residue from the terminals, use a thick wire brush. Once the powder is wiped away, spray the terminals with an anti-corrosion spray to reduce the amount of acid that appears on them. Always wait until the spray is dry to connect the battery charger.

Final Thoughts

For a strong and successful charge to your battery, consider the NOCO Genius Gen1 AGM Battery Charger. Or there’s the Motopower Automatic Smart AGM Battery Charger, which is less expensive, lightweight, and easy to set up.