只需要拆开或者直接取下蓄电池盖，就可以检查电解液的液面高度。
Simply unscrew the battery caps or remove the covers to check the level.
按照理论上说，铅酸蓄电池需要在每次保养时检查电解液的密度和液面高度，如果有缺少需添加蒸馏水。
According to theory, lead-acid batteries need to check the density of the electrolyte and the height of the liquid level at each time of maintenance, if there is a lack of need to add distilled water.
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