The 41X battery indicator was at 50% when I received it and I managed to burn the rest of the capacity in 3 days.
Now I have to admit that I was more or less playing with the thing all day .
I put a new Duracell battery in and after 2 days battery is 80% V=2,7V and slowly going down.
I have the feeling that this is going too fast, what is a normal battery life in hours programming/playing in SLOW mode
Its on USB now most of time and I can see the processor speed nicely change in SLOW FAST and USB mode.
Auto switch off works fine also.
In diagnostics there are different power modes, my HW version = 2 but the manual does not give a default value for it.
Is there any effect on power drain.
Erik
Battery use
Battery use
HP41C (2x), HP41CV, HP41CX, DM41X β, DM41X, DM42, HP11C, HP48G, HP97
Re: Battery use
Shall I confirm your statement or do you want to ask a question??
WP43 SN00000, 34S, and 31S for obvious reasons; HP-35, 45, ..., 35S, 15CE, DM16L S/N# 00093, DM42β SN:00041
Re: Battery use
The statement was a question (? missing and without proper preamble)
What I like to know, is it useful to play with this setting to minimise battery use ?
Is there a preferred setting for HW V2 ?
HP41C (2x), HP41CV, HP41CX, DM41X β, DM41X, DM42, HP11C, HP48G, HP97
-
- Posts: 84
- Joined: Mon Mar 16, 2020 9:37 am
- Location: France
Re: Battery use
Just a question.
You calculate the battery level by the number of bars in the battery indicator or is there a way (like for DM42) to know the voltage of the battery (and to display it, again like DM42) ?
Olivier
You calculate the battery level by the number of bars in the battery indicator or is there a way (like for DM42) to know the voltage of the battery (and to display it, again like DM42) ?
Olivier
Olivier de Nantes (Bretagne)
HP41 (x3 : 2CV / 1CX), HP 42S, HP 48G+, HP 71B, HP 15C LE, HP 35S, HP PRIME
DM41L, DM 41X (Beta - SN: 00078), DM 42 (SN: 1028)
HP41 (x3 : 2CV / 1CX), HP 42S, HP 48G+, HP 71B, HP 15C LE, HP 35S, HP PRIME
DM41L, DM 41X (Beta - SN: 00078), DM 42 (SN: 1028)
Re: Battery use
Yes it is under setup, 4 system, 2 system menu, 8 selftest, 5 diagnosticsOlivier de Nantes wrote: ↑Wed Apr 08, 2020 2:57 pmJust a question.
You calculate the battery level by the number of bars in the battery indicator or is there a way (like for DM42) to know the voltage of the battery (and to display it, again like DM42) ?
Olivier
You cannot exit diagnostics but it times out in a few minutes.
batt is 2,7V now
HP41C (2x), HP41CV, HP41CX, DM41X β, DM41X, DM42, HP11C, HP48G, HP97
- PierreMengisen
- Posts: 305
- Joined: Wed Nov 29, 2017 1:38 pm
- Location: Neuchâtel CH
Re: Battery use
I am surprised to see that the voltage indicated is accurate to 1/1000 of a Volt. Is this real?
Pierre
[TI59 with PC100C; TI-84 Plus CE-T; HP41CV with HP IL loop & 2*82161A DCD & 82162 TP; HP15C; HP28S; DM41; DM41L; DM42; DM41X]
[TI59 with PC100C; TI-84 Plus CE-T; HP41CV with HP IL loop & 2*82161A DCD & 82162 TP; HP15C; HP28S; DM41; DM41L; DM42; DM41X]
Re: Battery use
Believe it or notPierreMengisen wrote: ↑Wed Apr 08, 2020 5:18 pmI am surprised to see that the voltage indicated is accurate to 1/1000 of a Volt. Is this real?
WP43 SN00000, 34S, and 31S for obvious reasons; HP-35, 45, ..., 35S, 15CE, DM16L S/N# 00093, DM42β SN:00041
Re: Battery use
You can see the last two digits of the voltage change up and down when you press a key.
Its not too difficult to measure 0.001 V resolution with a simple Successive approximation AD converter, even the measurement uncertainty could be reasonable. There is of course the calibration so in absolute terms this 0.001V resolution has no meaning.
Its not too difficult to measure 0.001 V resolution with a simple Successive approximation AD converter, even the measurement uncertainty could be reasonable. There is of course the calibration so in absolute terms this 0.001V resolution has no meaning.
HP41C (2x), HP41CV, HP41CX, DM41X β, DM41X, DM42, HP11C, HP48G, HP97
- PierreMengisen
- Posts: 305
- Joined: Wed Nov 29, 2017 1:38 pm
- Location: Neuchâtel CH
Re: Battery use
1 tenth +/- 5 hundredths is enough for me. What's important to me is to always have a spare battery ... and a USB connection.
Pierre
[TI59 with PC100C; TI-84 Plus CE-T; HP41CV with HP IL loop & 2*82161A DCD & 82162 TP; HP15C; HP28S; DM41; DM41L; DM42; DM41X]
[TI59 with PC100C; TI-84 Plus CE-T; HP41CV with HP IL loop & 2*82161A DCD & 82162 TP; HP15C; HP28S; DM41; DM41L; DM42; DM41X]
Re: Battery use
But how long does one battery last in hours, it seems one or two weeks max if i calculate the speed the voltage goes down with one hour a day on battery.PierreMengisen wrote: ↑Wed Apr 08, 2020 6:48 pm1 tenth +/- 5 hundredths is enough for me. What's important to me is to always have a spare battery ... and a USB connection.
If this is not normal I will hook up my multimeter and a powersupply tomorrow to see the current.
This thing gives me a true HP41 with cardreader feeling
HP41C (2x), HP41CV, HP41CX, DM41X β, DM41X, DM42, HP11C, HP48G, HP97