How to Test a 48 Volt Golf Cart Charger?

If you are here, it must mean you want to know how to test a 48 Volt golf cart charger. You are in luck. The process of testing a 48 Volt golf cart battery charger is fairly simple and anyone can do it with some proper guidance. You should already be familiar with charging the batteries if you own an electric golf cart.

You can become stranded if your batteries run out. If your battery charger ever fails, you should be able to figure out what’s wrong and how to fix it. You won’t be able to fix every issue with a quick DIY fix, but a thorough diagnosis will save you hours of frustration.

We will also let you know how battery chargers work, how much they cost to buy on average, and what our top choice is for the best 48 Volt golf cart charger on the market. So, keep reading to find out!

How to Test a 48 Volt Golf Cart Charger?

Want to know how to test a 48-volt golf cart charger? The process is fairly simple. First, you will need a voltmeter. Attach a voltmeter to the positive and negative clamps of your battery charger to calculate the amount of power it creates.

Once it’s attached, turn on your charger. The voltmeter’s needle will shift from left to right to display the available amps. If the battery has no power, the amps will be at the far left, while the far-right shows full amperage. On a voltmeter, a golf cart battery charger can register up to 36 amps.

If your charger isn’t pumping out enough power when you turn it on, remove the voltmeter and try to pinpoint the root of the problem after turning it off.
Don’t forget to check the battery charger’s cables. Toggle the ignition to the auxiliary role.

There is an issue with the relation between the charger and the battery if the golf cart battery charger does not turn on. If your charger isn’t turning on, make sure it has some charge by hooking it to a car battery and check the wiring as well.

If repairing the wires didn’t get your charger working again, you can turn it back on and listen for the battery charger’s humming. The presence of a humming sound suggests that the transformer is operational, but the absence of a hum indicates a serious problem that may necessitate transformer replacement.

You should check for grime and dirt and connect the voltmeter properly for an accurate reading.

How Does a 48 Volt Golf Cart Charger Work?

If you want to know how to test a 48 Volt golf cart charger then you should also know how it works. The current 48-volt battery charger theory employs microprocessor-controlled charging profiles in three stages, sometimes two or four stages.

These are “smart chargers,” and good ones are hard to come by in retail stores. Bulk, absorption, and float mode are the three phases or steps in lead-acid battery charging or sometimes complete shut-off in some cases. Qualification, or equalization, is sometimes considered a separate level, typically for promotional purposes.

To retain battery power and service life, follow the battery manufacturer’s instructions for charging procedures and voltages, or use a high-quality microprocessor-controlled charger.

In a 48-volt charger, the bulk stage accounts for around 80% of the recharge, during which the charge current is kept constant and the voltage rises. A properly sized charger will provide as much current as the battery will accept up to charger capacity, though not exceeding 125°F for wet batteries and 100°F for AGM or GEL (valve regulated) batteries.

The AGM/flooded 48 Volt charger’s absorption stage, roughly the remaining 20%, includes the charger keeping at the absorption voltage which is between 57.6 VDC and 58.8 VDC, depending on charger set points and progressively decreasing the current until the battery pack is fully charged.

The charge voltage is reduced to about 2.25 volts per cell or about 54.0 VDC and kept constant at the float level, while the current is reduced to less than 1% of battery power. This mode can be used to keep a fully charged battery pack. Instead of maintaining a float voltage, some chargers switch off and control the batteries, starting a new charge cycle if necessary.

How Many Amps Does a 48 Volt Golf Cart Charger Use?

The answer depends on how many units you are using, it is not uniform for all 48 Volt golf cart systems. Approximately 600 amps can be delivered by a 48-volt system with 4×12 volts. An 8×6-volt 48Volt charger, on the other hand, can produce 1800 amps.

This alone will increase a golf cart’s range from around 12 miles to about 35 miles. Since both systems deliver the same voltage, their acceleration and speed would be identical. Their range, however, may differ due to the fact that they offer different amperages.

Best 48 Volt Golf Cart Battery Charger-These Products Could Help You.

Lester Link Series 48 Volt Golf Cart Battery Charger

Special Features

  • The dimensions are 11.75 x 10.2 x 7.7 inches and the golf cart weighs only 22.6 pounds.
  • Compatible with all PowerDrive / IQ & IQ Plus systems on Club Car DS, Precedent, Carry All, Villager, and Transporter golf carts from 1995 to 2013.
  • Comes equipped with an onboard computer that informs the charger to stop charging when the golf cart batteries are fully charged.
  • Can bring batteries less than four years old up to proper voltage.
  • Can last up to 20 years with heavy-duty intelligent chargers.
  • A 2-year manufacturer’s warranty is available.
  • The minimum voltage requirement is 30 volts to enable the charger. If the battery pack voltage is less than 30 volts, the charger will not register and will not turn on.
  • Not Compatible with Star Carts.


We hope we explained how to test a 48-volt golf cart charger well enough that you can do it by yourself now. If you want to know more about golf cart chargers or batteries, browse our website and you will be sure to find some important information.

For your kind information, our website have a one article which i suggested about best 36 volt golf cart batery charger. If you have enough time to read check this article.

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