General Information: Notes

The sealed battery is installed in the trunk room. The sealed battery has a structure that uses the sealed reaction (cathodic absorption), eliminating the needs for refilling and liquid level check.

Fig 1: Identifying Battery Exhaust Tube

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

• The sealed reaction (cathodic absorption) brings the oxygen gas*, which is generated at positive pole, to the negative pole, and binds the oxygen gas with hydrogen gas generated at negative pole. As a result, the gas is transformed back to water, preventing the decrease of electrolytic solution.
  NOTE: *: The generation of oxygen gas at positive pole occurs in an earlier stage than that of hydrogen gas at negative pole.
• Calcium alloy with superior characteristics of electrolyte decrease is used for the polar plate grille between the positive and negative poles in the battery container.

Although the sealed reaction (cathodic absorption) occurs with 100% efficiency with a normal use, the generated gas may not be absorbed completely under the statuses of overcharging, high temperature, or high voltage. Therefore, to prevent the charging of non-absorbed inflammable gas inside the trunk room, the battery exhaust tube (battery cover hose) and pipe for gas bleeding are equipped.