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HB9WCN
- Posts: 11
- Joined: Sat May 06, 2023 8:22 am
- Location: Switzerland
Post
by HB9WCN » Mon Apr 15, 2024 2:06 pm
F1RMB wrote: ↑Mon Apr 15, 2024 1:49 pm
HB9WCN wrote: ↑Mon Apr 15, 2024 1:46 pm
Hello
I'm wondering if the battery indicator could be adjusted. This actually never shows 100% when the battery is charged (always between 77-88%).
As I understand it, 100% is achieved at around 8.1v battery voltage.
However, since the radios have 7.4 Volt batteries installed, the display is not correct (6.8v=0% / 7.5v=55% / 8.1v=100%).
Couldn't you set the display so that 100% is always displayed at 7.5 volts and higher?
I find this more logical and actually correctly indicates the battery status of a 7.4 volt battery.
Greeting
Rene
You have a Battery Calibration adjustement in the General Options.
Cheers.
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Daniel
That's true, but why does 100% have to be at 8.1 volts?
Isn't that a bit too high for a 7.4v battery. Wouldn't it be better to display 100% from 7.6-8.1?
Rene
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F1RMB
- Posts: 2635
- Joined: Sat Nov 16, 2019 5:42 am
- Location: Grenoble, France
Post
by F1RMB » Mon Apr 15, 2024 2:16 pm
HB9WCN wrote: ↑Mon Apr 15, 2024 2:06 pm
F1RMB wrote: ↑Mon Apr 15, 2024 1:49 pm
HB9WCN wrote: ↑Mon Apr 15, 2024 1:46 pm
Hello
I'm wondering if the battery indicator could be adjusted. This actually never shows 100% when the battery is charged (always between 77-88%).
As I understand it, 100% is achieved at around 8.1v battery voltage.
However, since the radios have 7.4 Volt batteries installed, the display is not correct (6.8v=0% / 7.5v=55% / 8.1v=100%).
Couldn't you set the display so that 100% is always displayed at 7.5 volts and higher?
I find this more logical and actually correctly indicates the battery status of a 7.4 volt battery.
Greeting
Rene
You have a Battery Calibration adjustement in the General Options.
Cheers.
---
Daniel
That's true, but why does 100% have to be at 8.1 volts?
Isn't that a bit too high for a 7.4v battery. Wouldn't it be better to display 100% from 7.6-8.1?
Rene
Because the measuring circuit is really not accurate (I have one GD-77 which never display 100%, despite of the voltage).
Anyway, the battery calibration has just an impact of the reading, the charding circuit is independant.
So, you need to measure on the real value of the battery, and adjust that calibration value to match the reality.
Cheers.
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HB9WCN
- Posts: 11
- Joined: Sat May 06, 2023 8:22 am
- Location: Switzerland
Post
by HB9WCN » Mon Apr 15, 2024 2:29 pm
F1RMB wrote: ↑Mon Apr 15, 2024 2:16 pm
HB9WCN wrote: ↑Mon Apr 15, 2024 2:06 pm
F1RMB wrote: ↑Mon Apr 15, 2024 1:49 pm
You have a Battery Calibration adjustement in the General Options.
Cheers.
---
Daniel
That's true, but why does 100% have to be at 8.1 volts?
Isn't that a bit too high for a 7.4v battery. Wouldn't it be better to display 100% from 7.6-8.1?
Rene
Because the measuring circuit is really not accurate (I have one GD-77 which never display 100%, despite of the voltage).
Anyway, the battery calibration has just an impact of the reading, the charding circuit is independant.
So, you need to measure on the real value of the battery, and adjust that calibration value to match the reality.
Cheers.
OK no problem. Thanks for the quick reply.
Gruss Rene
