Jackery F9 - decision flow
F9 is a DC output fault. Jackery's F9 articles split it by port, because the check is different for USB and for the 12 V socket.
Display shows F9
Which output was in use?
USB port or the 12 V car socket
USB OUTPUT
12 V CAR SOCKET
1. Check the device against the port
Note its voltage, current draw and
power, and confirm it is within the
station's USB output specification.
2. Re-test with the original cable
Jackery calls out non-original cables
as a cause of failed charging.
3. Unplug, reset, retry
1. Check the appliance rating
Note voltage, current draw and power.
The socket rating is fixed:
12 V / 10 A / 120 W maximum
2. Anything above that trips F9
Fridges and pumps with high inrush
are the usual offenders.
3. Unplug, reset, retry
Reset: hold POWER + USB together for 5 seconds