VATECH EzRay Air Portable Manuel D'utilisation page 43

3) Disconnect the battery cable from the device by pressing the battery cable
connector as shown in the following figure.
Battery cable connector
4) Install the new battery in the reverse order of removal.
EzRay Air Portable (Model: VEX-P300) User Manual
After disconnecting the battery cable
DO NOT pull excessively on the battery cable.
4. Operation
Press and disconnect the battery
cable connector
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