A low level of electrolyte fluid will cause the battery to discharge quickly.

Inspect the electrolyte level at least once a week. If it is low, remove the caps and add enough distilled water to bring the level between the upper and lower level (illustration).
Do not overfill.
Examine the specific gravity of the electrolyte with a hydrometer, especially during cold weather. If it is low, recharge the battery.
Battery Maintenance
Battery RechargingMazda 6 Owners Manual: Operating the Compact Disc (CD) Player
NOTE
If a disc has both music data (CD-DA) and MP3/WMA/AAC files, playback of the
two or three file types differs depending on how the disc was recorded.
Inserting the CD
Insert the CD into the slot, label-side up. The auto-loading mechanism will set
the CD and begin play.
NOTE
There wi ...
Mazda 6 Owners Manual: Rear lateral link removal/installation
Caution
Performing the following procedures without first removing the ABS
wheel-speed sensor may possibly cause an open circuit in the harness if it
is pulled by mistake. Before performing the following procedures, remove the
ABS wheel-speed sensor (axle side) and fix it to an appropri ...