The relay is to use instead of the FET since u don't have DMM.
I donno how the switch is wired, and without tht info u cannot trigger the device. To use the mosfet a common point should be there. If the switch has ground terminal used as connection then u can use a cheap transistor instead of expensive FET to trigger.
I asked for a relay cause this way u do not have to worry about the interconnection what so ever. it is isolated and works 100% guaranteed.
The relay will just click and will not drain the li-on any sooner than a mosfet. U wouldn't know the difference.
Besides using the relay makes everything really simple.
One more thing, my ckt will use less parts and will be easier to built. I do not a regulator either
I donno how the switch is wired, and without tht info u cannot trigger the device. To use the mosfet a common point should be there. If the switch has ground terminal used as connection then u can use a cheap transistor instead of expensive FET to trigger.
I asked for a relay cause this way u do not have to worry about the interconnection what so ever. it is isolated and works 100% guaranteed.
The relay will just click and will not drain the li-on any sooner than a mosfet. U wouldn't know the difference.
Besides using the relay makes everything really simple.
One more thing, my ckt will use less parts and will be easier to built. I do not a regulator either