using mosfet to switch power on lithium battery. need to be able to chanrge it too.

[Gigaah]

Ok I'm kinda bit of an electronics neophyte. I just learned. That for my diy e cigarrete battery I. Need to switch the battery to the load with a mosfet. Resistance load.I'm using a mechanical switch to. Close the gate. Now I also need the gate open when the load is removed and voltage is applied for charging. What do I need to do this? Hopefully that is specific enough. I'm on my phone here because my computer died.

 

[audioguru]

We don't know what is a "diy e cigarette battery".
A switch can be used to turn on a Mosfet. But the gate of a Mosfet does not close and it does not open.

You need a charger circuit that is designed for whatever kind of battery you have. Ni-Cad, Ni-MH, Lithium, lead-acid or some other kind??

 

[Gigaah]

Ilemme try again. I tried attaching a photo but I wasn't able to. I have a 3.7v lithium battery. I want to connect it to a resistance load with an N channel mosfet switch. The mosfet is turned on via a mechanical switch that toggles from neg to pos of the battery. I think this is how its done from what I've gethered. The switch at rest is shorting the gate to neg. When pressed its set to battery positive. From what I understand the gate cannot remain open so I figured this is how its done. However to charge the battery. The load is removed and in its place a battery charger is placed to revharge the battery. The charger does supply voltage that could activate a mosfet buut the way I have it I couldn't do that without. Shorting the battery. Is there another way to do it with one fet or use two fets? If I could post a picture it would be easy to show you but the forum under advanced says upload is disabled.