Can You Overcharge a Razor Dirt Bike?

If you’ve read our Best Razor Dirt Bike Battery Upgrade Options article, you’d have a pretty good idea which Razor battery upgrade you want. But is that battery durable? Can you overcharge it?

We don’t often think about our Razor dirt bike batteries. Under that fake plastic tank, they do what we tell them to do. Besides running out of juice during a ride, there are other times when you’ll need to charge your Razor dirt bike battery, for example, if it’s been sitting for a while.

But can you overcharge a Razor dirt bike?

Quick answer, no. A Razor dirt bike can’t be overcharged. Why? Read on to find out.

How Long Do You Charge a Razor Dirt Bike?

When you first get the Razor dirt bike, you have to charge it for 12 hours with the stock charger. 

The following charges could be lower, but Razor recommends that you charge your Razor for 24 hours. Since Razor dirt bikes don’t really have a way to tell if the battery is full, this will make sure your Razor dirt bike has the optimal amount of juice to run longer.

24 hours is a little too much. Won’t it overcharge?

Like I mentioned earlier, you can’t overcharge a Razor dirt bike. Modern EV batteries and chargers (including Razor’s) are equipped with an overcharge protection circuit.

Overcharge protection circuits use Zener diodes to protect batteries from overcharging. The battery’s terminal voltage, or the voltage between the cathode and anode, increases when it’s charged. During full charging, the terminal voltage peaks, meaning it’s 100 percent charged.

A modern battery or charger detects this and automatically stops sending energy between them. After that, the charger goes to standby. That’s when you see the green light.

Should My Razor Dirt Bike Be On While Charging?

No, your Razor dirt bike should not be on while charging.

When you want to recharge your Razor, make sure it’s turned off. In addition to taking longer to recharge your battery if the motor is always on, the constant draining and recharging could also damage your battery.

What Causes a Razor Dirt Bike Battery Not to Hold a charge?

One of the reasons why Razor dirt bike batteries don’t hold a charge is because they’re old. The corrosion and cracks on your battery are obvious signs that it’s old and worn out. I’d replace it if it’s more than four years old. A young Razor battery can also run out of charge if it isn’t started for days or weeks.

The best way to figure out if your Razor dirt bike battery is still good is to test it using a multimeter.

How Do You Test a Razor Dirt Bike Battery?

You can test Razor dirt bike batteries by measuring their voltage, current, and resistance. 

You’ll need a multimeter to take accurate measurements. Plug the multimeter into the battery. 

After the multimeter is connected, you’ll have to choose which test you want to run.

Before you start, make sure the Razor dirt bike battery is fully charged and removed from the bike. Once the battery is out, test it with a multimeter. The first test you should run on a multimeter is the “test load battery” option.

You’ll also want to check the battery voltage. Once you’ve tested the voltage, make sure it matches the bike’s specs.

After that, check the current. The multimeter reading will tell you how much capacity the battery has.

Last but not least, check the battery’s resistance with the multimeter. Higher resistance means less flow of electricity in a battery.

Check your final readings against those in the user guide.

Also read: How Long Does the Razor MX350 Battery Last?