Battery over and under protection circuit

226

02:05:05

Tuned for Li-po batteries 4.2v max and 3.0v low.  Min and max are pot adjustable, range can be modified for different chemistry types.  1k resistor in lower right is output load.

published 8 years ago

BillyT

8 years ago

Check the voltage curves for lipo batteries.

dansperfect

8 years ago

Not enought amperage coming off it wont power a 2A 4V motor

Fhaman

8 years ago

I'm aware it has faults, its my first revision, mainly focused on battery safety factors at this point.

Fhaman

8 years ago

I have played around with the output, I am getting unexpected mosfet performance thats limiting the current. I am not sure the issue there yet, by my understanding it should be able to output more current than they are allowing.

BillyT

8 years ago

For some information on the mosfet settings check this info by 2ctiby; http://everycircuit.com/circuit/5214638451195904

Fhaman

8 years ago

Thanks BillyT for the info. I made the recommended mosfet changes and it had some effect, current upto 23ma. but mosfets still arent saturating right for some reason.

rich11292000

8 years ago

The mosfet's voltage at the gate needs to be >= the mosfet's voltage than the source.

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