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# How to test the voltage of the battery?

Articles on: [Toubleshooting](/en/category/toubleshooting-1u8znb4/)

We have a detailed video on how to test the voltage of the battery and charger:  
[https://www.youtube.com/watch?v=MUu-9tsvSQA](https://www.youtube.com/watch?v=MUu-9tsvSQA)  
  
This article is dedicated to showing how to test the voltage of the battery by using a voltmeter.  
  
When you have encountered the following situation, we might need you to test the battery's voltage for us to identify the problem:  
-Battery cannot be charged.  
-Range is reducing.  
-Battery life is reducing.  
  
Prepare:  
  
To test your e-bike battery, the only tool you’ll need is called a multimeter.  
A multimeter is a simple electrical measuring instrument that’s cheap and easy to get. You can find them on Amazon.  
  
  
![](https://storage.crisp.chat/users/helpdesk/website/e35bbffe2de2c800/98a8cc07-cc26-41d0-8bd6-731438_1ioghm6.jpeg)  
  
  
Execute:  
  
*   Turn on your multimeter and set it to DC Mode (200VDC)
  
  
  
![](https://storage.crisp.chat/users/helpdesk/website/75d57e0755096400/2a547462-b15a-46d3-b1b6-0ca4c7_6e7x4n.png)  
  
  
*   Put the negative probe (the black one) on the battery charging port 1 and put the positive probe (the red one) on battery charging port 3 (see picture)
  
  
  
![](https://storage.crisp.chat/users/helpdesk/website/8469793c2699d800/52fc2308-73cd-49e6-b2b7-338858_1x6ckue.png)  
  
  
![](https://storage.crisp.chat/users/helpdesk/website/3a1c4863728a1800/0d8e9fa5-6219-45f8-9d8c-1d1714_tle3pe.jpeg)  
  
  
*   See reading on the multimeter, if the battery's voltage is 48-54V, then it is normal, if not, the charging port might not be working.
  
  
*   Check the voltage of the connector on the battery, if the battery's voltage is 40-54V, then the battery is normal, if not, the battery might not be working.
  
  
![](https://storage.crisp.chat/users/helpdesk/website/ef1471f00e044800/49fc4fb6-3a8b-407d-9920-d6903c_m7yf6f.jpeg)  
  
*   If the voltage of the battery is normal, please test the voltage of the charger, as in this case the charger might have an issue:
  
  
![](https://storage.crisp.chat/users/helpdesk/website/c7a037789fa44000/f2091c7d-9bd2-451d-baff-520f71_1pow9j1.png)

Updated on: 02/09/2022