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DK Li-Po battery

Roger

Dear All,

I would like to order Li-Po batteries for my nRF52840 development kits and need some information. From the battery, what type of female battery connector is needed to plug into the board?

Kind regards,

Roger

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  • 0

    I connected an external battery to Li-Po connector and switched SW9 to Li-Po position with SW6 to default. The battery potential is 4.2V when fully charged. I noticed the leds on the DK appears much more dimmer (barely visible) compared to when supplied by the coin cell battery (3V) or the USB supply (5V). Just a bit strange, is this normal?

    I read that in the Li-Po position, the high voltage regulator of the SoC is directly supplied by the Li-Po battery and that the VDD voltage can be set by firmware? Please see this link on page 20.

  • 0 in reply to Roger

    You are correct. The REOUT0 registers allows you to set the value of VDD. Without know what code you are running, I can't help you out with setting REGOUT0. Also, according to the spec if you leave sw9 in it's normal position then the LiPo is routed through the 5V buck/boost and a fixed 3V buck converter will drive VDD. Then you don't have to worry about setting REGOUT.

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  • 0 in reply to Roger

    You are correct. The REOUT0 registers allows you to set the value of VDD. Without know what code you are running, I can't help you out with setting REGOUT0. Also, according to the spec if you leave sw9 in it's normal position then the LiPo is routed through the 5V buck/boost and a fixed 3V buck converter will drive VDD. Then you don't have to worry about setting REGOUT.

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