How to Fix an E-scooter Not Running at Full Throttle

Many people use electric scooters for their convenience and practicality. After all, it is much cheaper and easier to maintain than a car or motorcycle. However, riders should keep in mind that even the best electric scooters for adults encounter mechanical or electric problems, especially if it’s not maintained properly. So, when you make an electric scooter purchase online, consider maintaining your e-scooter well to avoid major problems.

For example, one issue you might encounter is an electric scooter throttle that’s not working. In a few cases, some people encounter a throttle that doesn’t accelerate when used in its full capacity, but it works at partial throttle. This e-scooter throttle issue shouldn’t be ignored as it could pose risks and accidents on the road.

If you encounter a defective throttle, here is an electric scooter repair guide to help you resolve the problem.

Why is My E-scooter Not Running at Full Throttle?

Knowing the cause of the issue will allow you to take the necessary steps to fix the problem and prevent it from happening in the future. The most common cause for an e-scooter that doesn’t run or accelerate at full throttle is due to a battery or battery pack that’s old, worn out, or defective.

If you look inside your e-scooter, you will find the speed controller between your battery and motor. Most controllers have a cut-off function for a low voltage which switches off the motor when the voltage of the battery or battery pack hits a zero charge.

This function is necessary to prevent the battery or the battery pack from over-discharging, which can lead to battery damage. Remember that a battery shouldn’t be left under low or zero charge as it can decrease its battery capacity or lose its ability to recharge. When this happens, you will need to replace your battery.

An old, defective, or worn-out battery or battery pack will drop to a zero state of charge when used at full speed, causing the controller to turn off the motor. However, the voltage will rise slightly at slower speeds. As a result, the e-scooter runs when you use partial throttle but not at full throttle.

How Do I Fix the Throttle on My Electric Scooter?

Try this electric scooter throttle repair guide to help fix your e-scooter throttle.

Determine if there is a voltage drop

If your e-scooter throttle has indicator lights, use them to check if the battery or battery pack’s voltage dropped. If the light doesn’t work at full throttle but it does at partial throttle, it means that the battery or battery pack has low voltage under a heavy load. So, replace your e-scooter battery.

Deep charge the battery

If your e-scooter uses a lead-acid battery pack, you can try deep charging the battery before replacing it. These kinds of batteries sometimes need a deep charge to help the battery gain capacity.

Try charging it for around 48 to 72 hours and check if it works. Deep charging lead-acid batteries a few times annually is good practice, especially when the battery is losing significant capacity.

Check the battery charger port

One reason why a battery may be losing capacity is due to a defective charging port. So, make sure to check if the charging port is working properly.

Start by plugging the battery charger into the port on the e-scooter and then checking the light indicator on the charger. If the indicator lights up, it means that the port, charger wire and charger connector work fine.

If your battery charger doesn’t have an indicator light, you may check the voltage of the port using a multimeter. Connect the multimeter to the battery charger port to test its voltage. The voltage on the charging port should be the same as the battery or battery pack.

Note that ports with male terminals should be handled carefully to avoid having the terminals short circuit to each other or port’s housing if it is made of metal.

Test the charger

If the charging port is fine, test the charger next using a multimeter. Start by checking if the battery or battery pack is below a full charge and needs to be recharged. After determining this, connect the charger to the e-scooter charging port and the plug on the wall.

Then, test the battery voltage using a multimeter and check if the voltage is climbing. Make sure to set the multimeter to a DC voltage range for a more accurate reading. If the voltage slowly increases, it means that the charger is recharging successfully. Then, charge it completely and test the battery voltage again to see if it is at a 100% state of charge.

If the battery or battery pack didn’t charge at all, then the charger is faulty and needs to be replaced. Buy an original charger with the same specs as your charger to avoid complications. Ideally, buy from the same retailer or brand.

Check the battery’s voltage

If the battery charges at 100%, leave it for a few minutes and check the voltage using a multimeter. If the voltage drops below the full charge, it means that the battery is worn out or defective. You may want to replace the battery immediately to avoid inconveniences and further damage on the battery.

Have a Mechanic Check the E-scooter

If you don’t know how to check the parts mentioned above or if you don’t have a multimeter to check the voltage, it’s best to bring your electric scooter to your e-scooter’s service centre or an e-scooter repair shop near you.

Hopefully, this electric scooter repair guide helped you identify the cause of your throttle malfunction and troubleshoot them.

If your Mearth electric scooter needs a repair, simply request a repair on our website and wait for our support team to reach out.

For more electric scooter tips, guides, and news, read more at Mearth’s blogs. Don’t forget to subscribe to our monthly newsletter below to receive the latest Mearth news, promos, and product releases.