Battery Condition Indicator F3DM/CT Battery Condition Indicators This clip-on ammeter is designed to give a quick indication of current and direction flow, There are no connections F3VAM Battery Condition Indicators Ammeters normally used to indicate charge or discharge currents on vehicle battery charging systems. Illumination slots supplied as standard F3DM Battery Condition Indicators Ammeters normally used to indicate charge or discharge currents on vehicle battery charging systems Standard Range 0/5A, 0/8A, 0/10A, F3PAM Battery Condition Indicators Supressed zero battery condition indicators designed to monitor the state of lead acid batteries Standard Range 12V (yellow zone