What To Know Before Buying an AGM Battery Charger and Maintainer

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The total charge time for your battery will depend on the size of the battery and the rating of the charger.

Total Charge Time

The total charge time for your battery will depend on the size of the battery and the rating of the charger.


To get a rough estimate for a full charge, take the amp hours of the battery, divide that by the amp rating of the agm battery charger, add 10%, and round up.


For example, let’s look at a 100 amp hour battery and a 10 amp charger. We divide the amp hours by the amp rating (100/10) to get 10, add 10% (10*1.1) to get 10.1, and round up to end up at 11. This means that it will take 11 hours for a 10 amp charger to charge a 100 amp hour battery.


Smart Battery Chargers

Smart chargers take the pain out of charging a battery by constantly monitoring the battery state at all stages of the charge. They add a charge to the battery, but at the optimum level for the condition of the battery, adapting to charge the battery at the most efficient speed.


They will repair batteries too. As batteries age, sulphate builds up on the battery plates and can affect the power output of the battery. Smart batteries use repair functions to remove the build-up of sulphate and have your battery running at optimum power.


Smart chargers actively repair and charge batteries to extend battery life and increase power. If you have an old battery, one that has been dead for a while, one that does not have a lot of power, or any other battery, for that matter, a smart charger can handle it all.


How to Use a Car Battery Charger

Watch this video to learn all about charging your vehicle’s battery.


Do AGM batteries require special chargers?

Yes, they do. AGM batteries require a slow and low charge, and that takes specific charging parameters. AGM chargers come with microprocessors that check the state of the battery and constantly adapt the charge depending on the battery state. A regular charger could easily overcharge and kill an AGM battery.


Can a dead AGM battery be charged?

Yes, it can. Dead batteries require different processes to charge, depending on the type of battery and how long it has been dead. AGM specific chargers come with the latest charging technology, and that means that they can adapt and charge almost any dead battery. Once charged, these AGM chargers will help to maintain the battery so that you get the most out of it.