An '''ampere hour meter''' is an instrument that monitors current with time. The indication is the product of current (in [[ampere]]s) and time (in hours).<ref>http://www1.eere.energy.gov/solar/solar_glossary.html</ref> | An '''ampere hour meter''' is an instrument that monitors current with time. The indication is the product of current (in [[ampere]]s) and time (in hours).<ref>http://www1.eere.energy.gov/solar/solar_glossary.html</ref> |