How to Repair Battery with a Programmer

Battery repair is a common repair case every day. Today we're going to share with you the steps and details we need to pay attention to when replacing the battery cell.

Firstly, we use a clamp fixture to separate the phone

Remove the battery

Then we need to solder the BMS board of the original battery to the new battery

Remove the protective tape on the BMS board

Disconnect the cathode and anode of the battery with a pair of scissors

Please do not break the flex cable

Remove the original battery BMS board

Pry apart the anode tab and cathode tab

Place them on the welding clamp fixture

Put the battery cell with nickel-plated tabs onto the welding clamp fixture\

The cathode tab and anode tab are settled under the BMS board

Please align the anode and cathode respectively

Solder with the Spot Welder

Note that one end of the spot welding pen is placed on the conductor material (copper)

The other end is placed at the point to be soldered

Folder well the tabs after soldering

Apply the protection tape

Put on the protection bracket

Wrap another layer of protection tape on the outside

Connect the programmer to the laptop

Open the software

Click reading the battery data

Select the data that needs to be rewritten

Recalibrate the cycle times and battery efficiency

Click writing, and then the recovery

Disconnect the cable

Connect the power cable to turn on the phone

“Important battery message” is displayed

Turn off the phone and take out the battery

We install the new battery

It will be verified automatically by the system

There is no “Important battery message” now