22-06-2020, 09:27 PM
A fresh Zinc is 1.6V and a fresh Alkaline is 1.54. But they will drop quickly in minutes of use. The 1.35 V to 1.4V is close to the average of the flattest part of the discharge curve.
It's why you shouldn't fit fresh batteries every time you demo.
End point is taken as 0.9V per cell (fall off a cliff point), but for LT filaments it's about 1V to 1.1V, the Mixer/Osc will stop first.
My B141 pack uses 60 x Alkaline AAA for HT and several Alkaline cells in parallel for LT, I forget which size. So as to use up HT and LT at about the same time. The original used layer cells for HT, but higher capacity than PP3 per cell. The Alkaline AAA is close to original. It's all made of folded card and cut up coffee tin for the terminals. It's actually the BEREC badged version I have. I have the Sky Casket also, which I think takes same pack. I've not got a Sky Princess which is an earlier version of the Sky Baronet.
It's why you shouldn't fit fresh batteries every time you demo.
End point is taken as 0.9V per cell (fall off a cliff point), but for LT filaments it's about 1V to 1.1V, the Mixer/Osc will stop first.
My B141 pack uses 60 x Alkaline AAA for HT and several Alkaline cells in parallel for LT, I forget which size. So as to use up HT and LT at about the same time. The original used layer cells for HT, but higher capacity than PP3 per cell. The Alkaline AAA is close to original. It's all made of folded card and cut up coffee tin for the terminals. It's actually the BEREC badged version I have. I have the Sky Casket also, which I think takes same pack. I've not got a Sky Princess which is an earlier version of the Sky Baronet.
