Over discharge protection

[RC4321]

Hi, I'm in the process of building a semi mechanical box mod. I have wires not for certain on the proper term. Anyway I would like to add protection from draining by battery down to low would like the cut off around 3 to 3.3v not sure how to go about doing this I have found some but they have a 2 amp cut off I am using a Sony 30 amp battery I don't sub ohm. Just curious if anyone has any recommendations thank you in advance

 

[Portertown]

Hi, I'm in the process of building a semi mechanical box mod. I have wires not for certain on the proper term. Anyway I would like to add protection from draining by battery down to low would like the cut off around 3 to 3.3v not sure how to go about doing this I have found some but they have a 2 amp cut off I am using a Sony 30 amp battery I don't sub ohm. Just curious if anyone has any recommendations thank you in advance

I am in the process of building a SX350 chip based mod at the present, but I was planning on a semi mechanical mod before this.
What I was going to do if I had built the semi mechanical mod was add a small voltage meter to my mod along with a slide switch to turn the voltage meter on so I could check my battery voltage when I wanted to.

 

[RC4321]

I am in the process of building a SX350 chip based mod at the present, but I was planning on a semi mechanical mod before this.
What I was going to do if I had built the semi mechanical mod was add a small voltage meter to my mod along with a slide switch to turn the voltage meter on so I could check my battery voltage when I wanted to.

Thank you for the idea if space was on my side that would work. I was looking on ebay and the micro usb board for charging it actually to my surprise says it has over discharge protection of 2.5 volts did not notice that before if it works is a different story hopefully this helps someone MP1405 5V 1A Lithium Battery Charging Board w Micro USB Connector for DIY | eBay

 

[RC4321]

Of course then it would have to wired off the board outs and there is a 3amp limit back to square one

 

[rurwin]

Can you use the board outputs to drive a MOSFET?

 

[DeviantDigi]

Can you use the board outputs to drive a MOSFET?

That is thinking outside the box.

Couldn't you use a Mosfet powered by a resistor rated 2 or so volts under the batteries voltage. Than when the battery drains downs to 2 volts, the resistors reading would be changed to say 0? Disconnecting the connection.

 

[TheRac25]

all you need is a pfet and a zener, i dont think that board does what you think it does

eta: something like

 

[edyle]

an inline voltmeter would be nice.