Which rechargeable battery you prefer for the HP-41?

[grsbanks]

(08-24-2018 06:01 AM)Dieter Wrote:  If your HP41 really turns on the BAT indicator at 1,2 V this sounds a bit out of spec. It should be more like 1...1,1 V. Or, more precisely, a bit above 4 V for the whole pack. How did you determine that value?

If the voltage was measured with the batteries OUTSIDE the calculator then they could easily give such a reading but, once IN the calculator that's drawing even only a small amount of current, can easily drop below the BAT indicator threshold.

For readings to be really meaningful, the voltage should be measured with the batteries IN the calculator.