Yeah, you are correct about the 3914, sorry about that. Is there any other way to monitor the current draw without a shunt resistor. The reason is that, when current of ten amps is drawn from the battery, the voltage falls from 6.24 volts to 5.7 volts and this varies greatly with current drawn, also, high wattage resistors can be expensive and bulky especially when a heat sink is needed for power dissipation. The project I am making is a portable psu which delivers 0-40 volts from a 6v battery. I was also considering using a current divider across the step-up transformer. If a current of 8-20ma could be somehow be directly proportional to the current draw i could light an led and have that shine on a light sensitive resistor, and make a voltage divider...ect. If you could tell me how to do that i would greatly appreciate it.