Using a hydrometer- paul-ryan.info
Download

Squeeze the hydrometer bulb, put the nozzle into the cell and release the bulb. Remove the hydrometer and read the state of charge when the float has settled. Squeeze the bulb to replace the electrolyte.

Appears in

Checking the batteries

Most car batteries are sealed for life - apart from a small vent hole which allows gas to escape...

еще по теме

ссылка

https://sellmax.com.ua