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Battery over-discharge Cut Off Circuit

I used four NiCd batteries for one of my designs. Initially I faced a problem that whenever batteries got discharged lower than 0.7V per cell it damaged the cell.

So to prevent that I built in a cut-off circuit using Torex XC6120 Voltage Detector and a Power MOSFET as below

By this I was able to prevent the over-discharge of the batteries.

Does anyone know if the same cut-off circuit will work with the newly introduced silver-zinc batteries as well or I'd need to make changes to my cut-off circuit to accommodate this type of batteries?

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By Sanjay Chawla on Oct 20, 2008

Site: Electronics Design Engineering Lounge (Public)

Forum: Power Management Systems - # of views: 5991

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Silver-Zinc batteries provides 1.5V per cell and can be used in place of 3.6V Li-ion batteries with minor changes in firmwire and specs in power supply in order to handle lower voltage of Silver-Zinc batteries.

By Bruce Staple, October 20, 2008 - 10:31pm

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Since the discharge cut off for Li-Ion batteries is 2.8V but for Silver-Zinc it is 1.2V, I think you will require a change in this circuit.

By Brijesh Kumar, October 20, 2008 - 10:48pm

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XC6120 has a detect voltage range from 1.0V to 5.0V. This will work with the Silver-Zinc batteries too.

By Mark Thomson, October 20, 2008 - 10:58pm

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