Honda PASSPORT 2023 Owner's Manual page 567

uuIf the Battery Is DeaduJump Starting Procedure
Booster Battery
566
5. Connect the other end of the first jumper
cable to the booster battery + terminal.
u Use a 12-volt booster battery only.
u When using an automotive battery
charger to boost your 12-volt battery,
select a lower charging voltage than 15-
volts. Check the charger manual for the
proper setting.
6. Connect the second jumper cable to the
booster battery - terminal.
7. Connect the other end of the second
jumper cable to the engine hanger as
shown. Do not connect this jumper cable to
any other part.
8. If your vehicle is connected to another
vehicle, start the assisting vehicle's engine
and increase its rpm slightly.
9. Attempt to start your vehicle's engine. If it
turns over slowly, check that the jumper
cables have good metal-to-metal contact.