Testing Your Mobility Scooter Battery With A Multimeter

By | November 28, 2022

If you have been unable to figure out why your mobility scooter isn’t working and you think it may be the battery, here are some steps you can take to determine if your battery is bad or if the problem lies elsewhere. These steps will walk you through testing your mobility scooter battery with a multimeter so that you can be sure it’s good enough to work properly before re-attaching it to your scooter or purchasing a new one.

A mobility scooter battery provides power to the electric motor that propels the scooter through different terrains, and in order to keep it in good working condition, you’ll need to check its voltage and general health every once in a while.

Testing your mobility scooter battery with a multimeter is an inexpensive way to make sure it’s up to snuff, and doing so will let you get more out of your mobility scooter for longer before needing to buy another one.

Tools You Will Need

A multimeter is an invaluable tool for checking the charge of your mobility scooter battery, and you can buy one for about fifteen dollars. For this project, you will need:

1) The charger for your mobility scooter.

2) Your mobility scooter battery pack.

3) The charging cord that goes from the charger to the battery pack. You will also need a multimeter (see Tools You Will Need).

If you don’t have one on hand, they cost around $15-$20 and are worth it in terms of checking batteries.

Prepare the Scooter

Prepare the mobility scooter battery for testing by putting it on the floor of your work space. Now, hold your multimeter in one hand and connect its red lead (positive) with the red lead on your battery.

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Connect the black lead from your meter (negative) with any metal surface on your scooter’s frame.
After you’ve completed this connection, check the voltage reading that appears on the screen of your meter. It should read something between 12 volts and 24 volts.

If not, disconnect all leads from both device and retry again until you get a voltage reading that falls within this range – then you know that you have correctly prepared your battery!

Test the Battery

When you first purchase your scooter, you will want to test the battery as soon as possible and then at least once every six months. To do this, you will need to find out if your scooter has an on-board charger or not. If it does, plug it in for 24 hours and then check the battery charge with a multimeter.

If there is no on-board charger, take the battery off of the scooter and use jumper cables to connect it to another car’s power source for at least 24 hours before testing again with a multimeter.

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You may notice that certain batteries are not designed for discharging before charging so make sure you read the instructions that come with them before doing anything!

How To Test Mobility Scooter Battery With Multimeter

To test your mobility scooter battery with a multimeter, you need to check the charge on your battery. This will tell you whether or not it is time for new cells. To check the charge, set the multimeter on volts DC and then touch one of the leads from the multimeter onto the positive terminal on your battery.

Next, touch the other lead from the multimeter onto one of the negative terminals on your battery. The reading should be at least 12 volts if you have a full charge. If it is not, then there are problems with either your cells or charger (if you use one).

You may also want to check the voltage difference between cells. You can do this by touching one of the leads from the multimeter onto the positive terminal on your battery, touching the other lead from the meter onto any negative terminal on your battery and measuring that voltage in amps. You want to see readings that are near 0.1 amperes per volt.

If the readings are lower than this, then your cells might be old and weak, or they might have been discharged too much. Either way, it’s time for new cells!

A good way to test this is to divide that total number by 10–you’ll get an idea of how much power you’re generating per cell when those numbers get higher than 1%. It’s usually around 30% per cell.

For example, a healthy battery could give you 300 millivolts across two cells, but if your battery is really bad off, it could only give 100 millivolts across two cells. That would be 33% instead of 100%.

If the battery still has some life left in it and all of the individual values for voltage are within tolerance ranges, then it may just need recharging; however, if even one value falls outside these parameters or if all values fall below tolerance ranges for specific batteries , then the battery needs to be replaced.


How to load test mobility scooter batteries

Check the battery charge with multimeter. Connect one lead of the multimeter to the positive terminal on the battery and the other lead to the negative terminal. If you have an analog meter, it should show between 12.6 volts and 12.8 volts (depending on your charger). If you have a digital meter, it should read around 13 volts or close to this reading. Then check the voltage under load.

Disconnect the probes from the terminals, then reconnect them again while turning on the mobility scooter for 30 seconds or more. You should see a decrease in voltage to around 10 volts during operation. A voltmeter will also read less than 11 volts when there is no power being drawn from it.

How many batteries does a mobility scooter have?

Many mobility scooters are equipped with two batteries, which can be charged at the same time. A lot of people ask how they can tell if their battery is dead or not. It’s actually pretty simple! All you need to do is check your mobility scooters battery charge with a multimeter.

Will a multimeter test a car battery?

A multimeter is a device that measures the electrical energy in a circuit. Will a multimeter test a car battery? It depends on what type of battery it is. If the battery being tested is a lead-acid battery, then no.

Lead acid batteries can’t be tested with a multimeter because they don’t produce enough voltage to register on the multimeter’s scale.


In conclusion, we recommend that you test your mobility scooters battery with a multimeter before each ride. This will help ensure that you have the most power available when you need it.

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