RGBW Input to measure batteries

[jnevestdl 1]

Hi.

I would like to measure my solar panel bateries 24Vdc...

Can someone help me how to use the 10v input of the rgbw to measure that???

Something like this....

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Tks in advance

[j.nowacki 5]

jnevestdl, a simple voltage divider should do, with known resistances you will be able to calculate real voltage on battery. However such installation should be done by qualified person only.

[jnevestdl 1]

I understand what you are saying... Do you know how to do that calculations?

[j.nowacki 5]

jnevestdl,

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check in resistive divider section. Resistors and output voltage is know, just compute the Vin value from this data. Notice that resistors should be big enough to limit current and their values should limit maximum output voltage to 10V. But this is just an idea, we did not tested such solution and we do not recommend it in any way, especially when none qualified person is involved into its setup.

[Lambik 194]

their values should limit maximum output voltage to 10V

You could use a varistor for protecting the input voltage.

There are some of-the-shell-solutions, but they are pretty expensive. For example:

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The advantage is that their are electrical isolated, the input voltage is separated from the output and they can be configured for the purpose you need.

The cheapest way is to use Voltage divider with a resistor as protection.