It's covered with quality lid to prevent evaporation and 6 coins cap to allow refill of water.
STANDARD PERFORMANCE & POWER
Power equal to HITACHI's standard batteries by using same technology from Japan factory.
EXPANDED GRIDS
Both Positive & Negative are expanded grid for long lasting usage life. Our technology enabled us to manufacture fine particles grids that reduces corrosion of acid.
CALCIUM PLATE
With calcium plates, battery reduces water evaporation.