Honda Civic Service Manual: Battery System

Electrical

...

Battery Removal and Installation

Removal 1. Battery Terminal - Disconnection 1. Make sure the ignition switch is in LOCK (0). ...

See also:

Honda Civic Service Manual. Taillight Removal and Installation ('13-'14: 4-door except Natural Gas models)
1. Trunk Floor Cover 1. Fold down the seat-back(s). 2. Remove the front area o ...