The TP-BATTMETER-24 is a simple very low cost meter system used for quickly assessing the battery charge status and charge rate on any 12V or 24V battery system. With just a glance a technician can determine if the battery is charging or discharging and the state of the batteries charge by observing the battery voltage. On solar systems he can see if the solar panels are charging the batteries and how fast based on the current reading. On wind powered systems she can see if the wind turbine is outputting sufficient power to charge the batteries. On vehicular applications, recreational vehicle applications and cabin applications the owner can quickly monitor the state of his auxiliary battery charge and how fast the battery is charging or discharging. This type of information is imperative to maintain a healthy battery system and extend the life of the batteries.