FORD 2012 Focus Electric - Manual (Page 336)

LOW AND HIGH VOLTAGE BATTERY STORAGE
If your vehicle is to be stored for 30 days or longer, the high voltage
battery should be charged to above 25% state of charge and the low
voltage (under hood) battery negative terminal should be disconnected.
If your vehicle is to be stored for 3 months or longer, the high voltage
battery should be charged to between 80% and 100% state of charge and
the low voltage (under hood) battery negative terminal should be
disconnected. Failure to do this could damage the batteries.
Note: If battery cables are disconnected, it will be necessary to reset
memory features.
MOTORCRAFT PART NUMBERS
Component Part number
12 Volt battery BXT-96R-500/BXT-96R-590
Cabin air filter FP70
Windshield wiper blade WW-2201-PF (driver side)
WW-1901-PF (passenger side)
336 Maintenance and Specifications
2012 Focus Electric Vehicle (fob)
Owners Guide gf, 1st Printing
USA (fus)