How to charge a scooter battery without a charger? Let´s find out!

Everyone knows that an electric scooter is a plug-in vehicle that can be easily recharged. However, there can be a situation when you´ll need to know how to charge a scooter battery without a charger. In this article, we´ll show you the most useful methods to do it.

How to charge a scooter battery without a charger

What kind of charger does an electric scooter take?

You can find chargers online as well as in local shops selling goods related to electric vehicles. It´s important to use the correct charger for your scooter. Otherwise, you can seriously damage your scooter. Make sure the battery and the charger have the same voltage and wattage. Most scooters work with 48v and 24 amp-hour chargers.


Some electric scooter models make charging easy: they have solar panels so you don’t have to charge the battery yourself. However, they are quite expensive and many of us have to opt for an ordinary electric scooter.

Read also: How long does it take to charge an electric scooter?

What if I do not have a proper charger for my battery?

There are situations when you just can’t access the original charger. What should you do in this situation? Our guide will show you how to charge a scooter battery without a charger.

How can I charge an electric scooter without a charger?

There are two easy and safe methods, you just should follow some steps.

Method 1. Portable Car Jumper

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Portable jumpers are batteries that have more voltage than ordinary batteries. The jumper cable used for charging car batteries should be suitable. However, you must do it in a dry and dark place (to prevent accidents during the charge). You will need to follow these steps:

Step 1. Remove the battery

Generally, electric scooters have removable batteries. The battery is usually located inside the deck. It should be easy to remove it for most scooter models but still, consult a manual. Turn off the power supply and unscrew the panel. It´s useful to take a picture of the panel so you can see where the screws or bolts should go.

Step 2. Unscrew the battery pack

The battery is normally attached with a screw to the compartment and has a plate holder that supports it. In order to charge the scooter battery, you will have to remove the plate holder to get access to it.

Step 3. Disconnect the battery

A battery is usually connected to a socket inside the compartment. Remove the cables from both positive and negative terminals (the positive terminal, as well as the negative terminal, are attached to the battery by wires). You should remove the metal clips used for the attachment of the electric scooter battery.

Step 4. Connect a portable car jumper.

Connect the jumper’s red cable to the positive port and then connect the jumper’s black cable to the battery’s negative port.

Step 5. Turn your jumper on.

After it, the current will start to fill the cells of the battery.

Step 6. Wait and control the charging process.

It usually takes 20 minutes to get a lithium-ion electric scooter battery to get completely charged. Do not disconnect the jumper from the battery before the 20 minutes is finished.

And it´s crucial not to let the battery get too hot. Remember that while a portable car jumper usually reduces the charging after hitting the top, overcharging the scooter battery may lead to overheating and fire (it is especially hazardous for lead-acid batteries).

Step 7 Switch off the jumper and remove the cables.

Disconnect the black jumper cable first and then the red jumper cable. Give the battery some time to cool.
Then reconnect it to the motor, and you´re ready to go!

How often should I charge the battery of the electric scooter?

Scooter batteries should be charged once a month (30-35 days). It´s recommended to leave at least 40 percent of your charge level. Draining it will lead to a dead battery, so you’ll need to replace it. And, of course, remember that a new battery also means more power and higher speed!

Read also: How to charge Razor electric scooter?

Are there any other ways to charge an electric scooter?

Method 2. Variable power supply

You can do it in a few steps:

Step 1

First, remove the electric scooter’s battery. You know how to do it from Method 1

Step 2

Connect the power supply cord to the battery (black cable to the negative pole and the red cable to the positive pole).

Step 3

Mark the voltage and the current of your scooter battery. The usual numbers for a Li-Ion battery are 4.2 Volt and 1.8 Ampere. Remember that the current you set for the charging must equal 20% of your scooter’s battery current. Too much current will damage the battery. If your scooter’s battery is marked as 9 amp hour, the amount of current should not surpass 1.8 Ampere.

Step 4

Wait until it’s 100% charged. It will take from 3 to 8 hours, maybe longer. When the power supplied current is 3% of the scooter battery’s rated capacity(Ah), your vehicle should be charged.

Step 5

Disconnect your battery from the power supply and let it rest for about five minutes. Then, reinstall it.

Read also: Why Is My Electric Scooter Not Turning On? A Detailed Guide To Fixing Your E-Scooter

What should I do with multiple batteries?

Tips for Maintaining Electric Scooter Battery Life

There are electric scooter models powered by multiple battery types. Let’s see what can differ from type to type.

Lead-Acid scooter Battery

Firstly, you must calculate the voltage for your battery model. It can be done easily: just check the number of cells in the battery of your vehicle. For example, if you have a 12-volt battery with six 2-volt blocks, set the power output to 12 volts.

While setting the current, remember that lead-acid batteries require 10 to 30 percent of their nominal capacity for charging. (For example, if you need a 9-Ampere power source to be charged at 30-percent capacity, set the current at 2.7 Ampere). And, as we stated before, don’t let your battery overcharge or overheat!

Lithium-Ion Battery

Li-Ion batteries are a common choice for electric scooters. They are long known for their simplicity and flexibility. Compared to a lead-acid battery, a lithium-ion one has a larger cell full voltage (typically 4.2 volts). However, there is a huge difference between these two types: Li-ion maximum voltage can’t be more than full charge voltage since cells are usually connected into series.

Nickel-Cadmium and Nickel-Metal Hydride Battery

Charging these ones is way more complicated than the two former types. The charging process is not different from the other types, but you must detect the full charge by yourself. And it’s not the easiest task.

You will need a working voltmeter to monitor the voltage of your scooter battery. Typical numbers must be from 13.7 to 13.9 volts. If the number is lower than 12 volts, your battery is depleted.

Keep in head that charging a NiMh battery is not the quickest task (most batteries take 3 hours to get fully charged).

And, what about my razor scooter?

Methods described in this article work with razor scooters, too. You will need to remove the battery from the casing in the motor department.

  • First, remove the outer shell of your razor scooter with a screwdriver.
  • You’ll see the battery between the two rods. Loosen the screws on the rods to remove them.
  • Unplug the wires connecting the battery to the electric engine.
  • Connect your battery to an alternating power source (universal power adapter, for example)
  • Charge the battery according to the instruction (from your razor scooter manual)
  • Put the battery in its place between the two rods and connect the wires to both positive and negative poles.

Read also: Top 5 long-range electric scooter models (for every budget)

Frequently Asked Questions

How many times can I charge an electric scooter?

Modern electric scooters can go through between 300 to 500 charging cycles before starting to lose battery capacity. The highest-quality, brand-name cells may last upwards of 1000 charging cycles.

Can I charge my electric scooter battery at home?

Well, better in the garage. Home is a too dangerous place for charging the scooter battery. Anyway, you can use a portable car jumper or variable power supply to get your battery in the perfect fit. And, of course, always choose the correct charger to avoid problems with overheating!

How can I charge a dead scooter battery?

Well, if you know how to charge a scooter battery without a charger it won´t be difficult for you. You can use the same tips. However, if you feel that the battery of your e-scooter is losing its fit, don’t let its level lower too deep. Recharge it from time to time, so it will maximize your battery’s life.

Can I prolong the battery life?

Yes, of course. You should keep the scooter charged to 50%, charging it at a C-rate under 1, and avoid using the scooter in extreme temperatures (below 32°F and above 114°F). If you need to store your vehicle for long periods of time, make sure to charge an electric scooter periodically and never store it completely discharged.


Where can I get an e-scooter battery?

Contact the store where you bought your electric scooter and ask if they sell the batteries for your scooter. Also, they can help you replace it if you buy the battery from them. To prevent complications with your e-scooter, make sure the battery you purchase has the same characteristics as the original one.

Read also: Can electric scooters be used manually?


Although charging an electric scooter might appear easy, it isn’t. You should be cautious when and how you charge your vehicle if you want to increase your battery life. The main tips and tricks are:

  • Use the original charger to charge your electric scooter.
  • Don’t ride before or after charging, and charge it in a room-temperature environment. Allow the battery’s temperature to settle for at least 15 minutes.
  • A full charge is the only option.
  • Charge a scooter battery once every three months, even if you are not using the e-scooter.

If you would like to share some of your experience from riding, maintenance, or tips for buying an e-scooter, please leave a comment. We´d love to hear from you!

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