Other information:
Specifications
AVN Head Unit
Item
Specification
Model
7 inch Internal amplifier (A Type)
8 inch External amplifier (B Type)
Power supply
DC 14.4V
Tuning type
...
Description
1.
The MF(Maintenance Free) battery is, as the name implies, totally maintenance
free and has no removable battery cell caps.
2.
The MF(Maintenance Free - Openable Type) battery does not require water
replenishment ...