The Turnigy meters only monitor current flowing in one direction, and only go up to 66 amps hours or something. TWO would need to be installed inline and reset periodically and the math done. The cables are not really heavy enough to run the alternator current through them either, certainly not starter current, and there is no way to read alternator current without reading starter current. If you are not charging the house batteries with the alternator, the turnigy meters can be effective.<br><br>You are better off with the trimetric.<br><br>I have the Blue Sky IPN pro remote which works in conjunction with my solar charge controller(sb2512i). It uses the same shunt as posted above. All ground wires which normally went to the Negative battery terminal must go to one side of this shunt. The other side goes to the battery (-), and nothing else can goto the battery(-) or it will not be measured.<br><br>Voltage readings to determine state of charge are only accurate on a rested battery, one which has not been charged or discharged for several hours, but with enough readings at different stages of discharge, one can get a rough idea of the state of charge, but nothing beats an amp hour counter, and nothing else even comes close.
