> Hi Russel, ...L > Does this look better? > https://lh3.googleusercontent.com/-D8Hg84hHYwA/UDsGV5vgQvI/AAAAAAAAEF0/BH= d92LRGFTI/s720/batt_v2.jpg > I have moved the MOSFET to high side. Different yes. Better, no :-( Follow the battery current. Note MOSFET polarity. If you do what I said it will work. Note that now you would need to drivegate above battery - befoe you drove it relative to ground. Russell --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .