Battery charging circuit on 7"

sgrubysgruby
in Elecrow HMI Display

Is there any kind of information on the battery charging circuit on the 7" HMI?

How large a lithium battery can I connect to it?

What is the charging rate?

Is there any way to know if the battery is fully charged?


Thanks.

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Comments

  • ElecrowElecrow
    edited February 17

    1.Battery capacity is not limited

    2.Charging time = battery capacity (for example 1000MAH)/500MA*1.2=2.4 hours

    3.Use a multimeter to measure the positive and negative voltage of the battery when it is fully charged at 4.2V.

  • ReSPR_TechnologiesReSPR_Technologies

    Hi there. From what I could see in the product spec page both the HMI 5" and 7" circuitry are the same, and I could not see it had an integrated charging circuitry for the LiPO batteries, as this thread would suggest. Can you pls confirm if that's the case?

  • ElecrowElecrow
    edited October 25

    @ReSPR_Technologies said:
    Hi there. From what I could see in the product spec page both the HMI 5" and 7" circuitry are the same, and I could not see it had an integrated charging circuitry for the LiPO batteries, as this thread would suggest. Can you pls confirm if that's the case?

    Hello, please refer to the schematic diagram.
    5.0inch

    7.0inch

    Both have lithium battery management chips.

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