Vello BG-N21 Battery Grip for Z 5, Z 6, Z 6 II, Z 7, and Z 7 II Mirrorless Camera - Manual (Page 11)

Full
Medium
Low
Battery needs to recharge.
Press the CHECK button to check the battery’s
power. The LEDs will display the status for 3 seconds.
You can charge the batteries inside the grip, without removing them, using the included 5 V / 2.4 A power adapter.
Make sure you turn off the camera to begin charging. Then use the included power adapter to connect the battery
grip’s USB-C port to an AC outlet.
The LEDs will glow red when charging, and turn off when fully charged. If there are two batteries in the grip, the one
with more power will charge first.
Checking the Batteries’ Power
In-Grip Battery Charging
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