Share this item with your network: Telecommuting and telework are synonyms for the use of telecommunication to work outside the traditional office or workplace, usually at home (SOHO) or in a mobile situation. According to one study, telecommuting has been growing at 15% a year since 1990 in North America.
An electrometer is an electrical instrument for measuring electric charge or electrical potential difference. There are many different types, ranging from historical handmade mechanical instruments to high-precision electronic devices.
For non-sealed batteries, check the specific gravity in each cell with a hydrometer and average the readings. For sealed batteries, measure the Open Circuit Voltage across the battery terminals with an accurate digital voltmeter. This is the only way you can determine the state-of-charge.