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Let me start with a disclaimer: BatteryStuff.com does not sell inexpensive, off-the-shelf battery chargers often found at retail outlets and certain other online stores. We cater specifically to microprocessor-controlled chargers, also known as smart chargers. All the chargers we stock are reviewed, tested and selected based on function, reliability and durability.

This type of battery charger is designed to charge lead acid and other types of batteries based on computer-generated algorithms. Simply put, the charger collects information from the battery and adjusts the charge current and voltage based on this information. This allows the battery to be charged quickly, correctly, and completely when using a smart charger. All the chargers we sell can remain connected to a battery indefinitely and will not overcharge or damage it.

Simple steps to select the right battery charger for your needs.

Step 1: Choosing a Charger Based on Battery Type

Whether your battery is maintenance free, wet cell (flooded), AGM (absorbed glass mat), gel cell or VRLA (valve-regulated lead acid), one charger should work for all types except for gel cell. However, some of our gel cell chargers will work well with the other battery types.

Step 2: Determining Battery Size

We don’t mean physical size, but how many amp hours your battery stores. For example, a typical full-size auto battery is about 50 amp hours, so you would choose a 10 amp charger that would take about 6 hours to recharge it if the battery were completely dead. Another instance would be a marine deep cycle battery rated at 100 amp hours. It would take a 10 amp charger about 11 hours to recharge a dead battery to near 100% full charge. To calculate your total charge time for a battery, a good rule of thumb is to take the amp hour rating of the battery and divide by the charger rating (amps) and then add about 10% for the extra time to totally top off the battery.

Step 3: Choosing a Battery Charger Based on Desired Outcome

Some folks require a charger to keep their motorcycle, classic car, or aircraft battery charged during the offseason. In these cases, a simple low current charger will work fine. Others require a fast and powerful charger to quickly restore a trolling motor battery or a wheelchair battery set. Other types of chargers and the reasons you might need them:

MULTI VOLTAGE Input chargers for use when visiting a foreign country

Waterproof chargers for those times when you’re out in the elements

Chargers that double as power supplies for RV use

Multi-bank chargers for charging multiple batteries simultaneously

Hopefully, we’ve helped you figure out which is the best charger for your application. Use the link below to see our large selection of battery chargers and 12v/24v trickle chargers.

What Is a GaN Charger, and Why Will You Want One?

Gallium Nitride (GaN) chargers were everywhere at CES 2020. This modern alternative to silicon means smaller, more efficient chargers and power bricks are on the way. Here’s how it works.

The Advantages of a Gallium Nitride Charger

GaN chargers are physically smaller than current chargers. This is because gallium nitride chargers don’t require as many components as silicon chargers. The material is able to conduct far higher voltages over time than silicon.