Nasa Battery Monitor

The battery monitor is designed to monitor performance of 12 volt lead acid battery systems with capacities of up to 650 Amp hours. It is supplied complete with a precision 100 Amp shunt and a prefabricated cable assembly to enable simple DIY installation.
The unit continuously monitors voltage, current (charge or discharge), number of Amp/hours (charge or dischag), the battery's state of charge and the time to charge or discharge. This information leads to more effecient use of the battery, which can enhance battery life and reduce the risk of failure.
Specifications
Supply Voltage: 8-16 Volts DC
Supply Current: 3 milliAmps
Battery Capacities: 5-650 Amp Hour
Load Current: 100Amps Maximum
Charge Current: 100 Amps Maximum
Shunt: Standard 50 millivolt @ 100Amp
Cables Supplied
100Amp shunt link to M8 ring terminal
5 metre from display unit to battery - fused and fitted with ring terminals for shunt, fuse holder and M8 ring terminal to battery.
Display Unit
Standard 110mm square clipper case. High contrast LCD, backlit for night viewing.
Simple operation - 4 keys to select Backlight, Volt/Amp/State of charge screen, Amp hours or Time to run.
Now a 24Volt model is available.