4/13/2026

Xhorse Dolphin II Battery Cell Test Guide

If your newly bought Xhorse Dolphin XP005L key cutting machine failed to charge battery, you may need to test the battery cell.

 

dolphin xp005l failed to charge battery

Remove the battery module.

Dolphin II Battery cell testing method:
Step 1: Use a multimeter to test the voltage between point A & point b to check if it is 3.3V.

Dolphin II Battery cell testing method 1
Dolphin II Battery cell testing method 2

Step 2: Circuit the switch
Circuit the switch and then test the voltage between point a & d to check if it is 28V.

Dolphin II Battery cell testing method 3

Dolphin II Battery cell testing method 4
Dolphin II Battery cell testing method 5

Step 3:
Disconnect the interface and check if the voltage gradually drops to 0.

Dolphin II Battery cell testing method 6
Dolphin II Battery cell testing method 7
Dolphin II Battery cell testing method 8

If you fulfill the above conditions, it indicates that the battery is in good condition; otherwise, a battery replacement may be necessary.

Xhorse Dolphin XP005L replacement battery

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