We all know that a good battery is one of the most important parts of an electric bike. To keep it running properly, it needs to be charged and maintained.
A BMS reset is a vital step in ensuring that the battery can be used for longer periods of time and that it will not overheat. It is also a process that should be carried out when batteries are being changed or when they are to be replaced.
There are many ways of resetting the battery on an e-bike. Some of them are quite technical and require a lot of technical knowledge. The other methods are very easy and can be done by anyone with a little knowledge about electronics.
This article is about how BMS (Battery Management System) can be reset by a user. This article is aimed at the end user, who has never done this before and wants to know how to do it.
What Is A Battery Management System (BMS)?
The Electric Bike Battery Management System (BMS) is a small board electronic system that monitors and regulates the amount of power being used by the battery, allowing you to easily adjust it when needed. It is responsible for maintaining the health of the battery and it can be reset if it becomes damaged.
It also allows you to keep track of how much energy remains in your battery so that if you need more power at any time, you can add more without having to worry about running out of charge.
[Method 1]: How To Do A BMS Reset For An Ebike Battery Internally?
BMS reset is the process of replacing the battery of an electric bike. It is mainly performed by mechanics and requires a special tool.
Tools needed to reset a BMS internally:
- A pointed or Phillips screwdriver.
- A flat-blade screwdriver.
Resetting the BMS is essential for an electric bicycle battery to function properly. It is important to know how to do a BMS reset for an e-bike battery internally, since, most of us have seen the battery life of our electric bikes change over time. This happens because the internal battery is constantly charging and discharging.
Here are 3 steps to do a BMS reset for an e-bike battery internally:
- Step 1: Open the battery to gain access to the inside of the battery
- Step 2: Gently remove the battery cells and the BMS
- Step 3: Reset the Battery Management System (BMS)
Step 1: Open the battery to gain access to the inside of the battery
The first step to doing an electric bike battery BMS reset internally is to open the battery cover with screwdrivers. Once the screws and cover are removed, you will be able to see all the cables that connect to the battery, as well as the cells and the BMS (Battery Management System).
Step 2: Gently remove the battery cells and the BMS
Next, gently remove the BMS, at least that everything can be seen in plain view so that the inspection can be done properly. Remember to wear safety gloves and do not use excessive force when removing the Battery Management System (BMS).
Step 3: Reset the Battery Management System (BMS)
When you have removed the BMS from view you will see a harness of several wires that you will need to disconnect. Then connect the powered charger to the battery and reconnect the wiring harness to the BMS and close the entire system again so that your BMS is rebooted.
[Method 2]: How To Do A BMS Reset For An E-bike Battery Externally?
A BMS is a battery management system. It is used to control the charging of the battery. The main purpose of a BMS is to charge and discharge the battery in a safe manner so that there are no physical damages caused by overcharging and undercharging.
Tools do you need to reset a BMS externally:
- A DC barrel jack receptacle
- Wire cutters
- A black wire and red wire
- A standard multimeter
- A soldering iron
- Safety gloves to keep your hands protected
There are different ways to perform a BMS (Battery Management System) reset on an e-bike battery externally so that it can be charged up again after being discharged.
In this method, we will perform the BMS reset for an e-bike battery by accessing the BMS directly, without opening the battery compartment.
Here are 3 steps to do a BMS reset for an e-bike battery externally:
- Step 1: Charge the battery through the discharge port using an adapter.
- Step 2: Check if our adapter is passing current.
- Step 3: Reset the Battery Management System (BMS)
Step 1: Charge the battery through the discharge port using an adapter
The first step to doing a BMS reset on an e-bike battery externally is to charge the battery through the discharge port using a generic adapter. Be sure to wear safety gloves, as we will be working with electricity and soldering.
Once the safety precautions have been taken, you will connect the red and black wires we talked about on the necessary tools and connect the black wire to the negative pole and the red wire to the positive pole, using the DC barrel adapter.
Step 2: Check if our adapter is passing current
Once you have made sure that the black and red wires are connected correctly and that there are no loose or stripped wires, we will proceed to check if our improvised adapter is passing power to the system.
Step 3: Reset the Battery Management System (BMS)
If you have done the above steps correctly, when you plug in the adapter, you will see the charging light turn red. If this happens, just hold the cables for 15 seconds to reset the battery management system (BMS).
Finally, turn off your charger and disconnect everything, so that you can verify that your battery is operating correctly.
Conclusion
In conclusion, in case you don’t want to do it yourself, then there are many companies who offer BMS resets for E-bikes at affordable prices (not all of them offer BMS resets for all brands). You can also contact your local bike shop or bike repair shop for help in finding.
