Bottlehead Forum
Bottlehead Kits => Legacy Kit Products => Quickie => Topic started by: precd on November 23, 2013, 01:49:48 PM
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I did a search on the forum for this question but could not find the answer. I am sure it is out there. So here is my question. If you measure the battery voltage topside at what voltage would you want to start thinking about replacing the batteries? I have played mine around 25 hours and still have close to 36 volts across the 9v string and 3v across the D cells. I know I am not close to thinking about changing them but thought it an interesting question.
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Measure the D-cell voltage between the ends of the D cell, not from one end to ground - they are not grounded at either end. New cells will run around 1.56 volts. When they are down to 1.2 volts, they are tired, but because the Q draws so little high-voltage current, you can probably operate a bit lower, perhaps 1.1 volt(?)
For the high voltage, it should work acceptably down to 24 volts - at least 24v to 36v is the range I designed for.
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Thank you sir.
Measure the D-cell voltage between the ends of the D cell, not from one end to ground - they are not grounded at either end. New cells will run around 1.56 volts. When they are down to 1.2 volts, they are tired, but because the Q draws so little high-voltage current, you can probably operate a bit lower, perhaps 1.1 volt(?)
For the high voltage, it should work acceptably down to 24 volts - at least 24v to 36v is the range I designed for.