Sparky63
New Member
- First Name
- Richard
- Joined
- Feb 15, 2021
- Threads
- 1
- Messages
- 2
- Reaction score
- 5
- Location
- California, USA
- Vehicles
- 2013 C-Max 2021 CR1
- Occupation
- Retired CFII MCSE USAF
- Thread starter
- #1
When your 12 volt battery dies, I hope it is at the dealership and they replace it. Unfortunately, it may happen at 2:00 a.m. Sunday, in the airport parking lot with 24 degree temperature and blowing snow. You, your spouse and children will be locked out. There is no key. You will need a 12v battery to connect to the 2 wires located behind the front bumper access port. (This is where the non-existent recovery hook would connect). Connecting 12v to these wires opens the “frunk”, allowing you access to connect jumpers to the car’s 12v battery. Once jumped, you will be able to open the doors and start the car.
How long will it take to get that 12v jump?
The diagram proposes to install an additional 12v AGM battery to provide self jump start capability. It also provides a power source for dash cams. If used for dash cams, a low voltage cut-off should be used to preserve capacity for jump starting.
In normal use, an accessory power source ( fuse 15, 15A if not used) provides 12v to power the dash cam and charges the auxiliary battery. The diode prevents power flowing from the aux. battery to the car 12v battery.
Switch 1 (S1) is extended to the front bumper access port. When S1 is closed, the relay is closed and both 12v batteries are connected. This accomplishes a jump start. Hop in and start your car!
I have not installed these components. I do not know if it will work as intended. Your comments and suggestions are encouraged.
How long will it take to get that 12v jump?
The diagram proposes to install an additional 12v AGM battery to provide self jump start capability. It also provides a power source for dash cams. If used for dash cams, a low voltage cut-off should be used to preserve capacity for jump starting.
In normal use, an accessory power source ( fuse 15, 15A if not used) provides 12v to power the dash cam and charges the auxiliary battery. The diode prevents power flowing from the aux. battery to the car 12v battery.
Switch 1 (S1) is extended to the front bumper access port. When S1 is closed, the relay is closed and both 12v batteries are connected. This accomplishes a jump start. Hop in and start your car!
I have not installed these components. I do not know if it will work as intended. Your comments and suggestions are encouraged.
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