LiPo battery recommendation for nrf5340 Audio DK

[SNJY]

I would like to know the recommended battery part that is suggested by nordic to work with the nrf5340 Audio DK. I saw some blogposts where it was mentioned that a 3.7V 1500mah lipo battery comes with the kit. I am assuming due to shipping restrictions on batteries, I didn't receive a battery in my kits. 

Regardless, i would like to buy a battery to start testing the board battery-powered. I couldn't find much details on the specifications for the battery in any nrf5340 Audio DK documentation. Can you please recommend be a list of suggested battery parts which i can procure for my application? 

[dejans]

Hi,

In the past, nrf5340_audio-dk packages included the battery, but this is not the case anymore. For your reference, the battery that was provided with the nrf5340_audio-dk board was LiPo battery 3.7 V, 1500mAh.

Can you please recommend be a list of suggested battery parts which i can procure for my application? 

You could try to look for battery with the same specifications as previously mentioned. You could get more information about available parts from your local distributor.

Please let me know if you have any further questions.

Best regards,
Dejan

[SNJY]

While i am able to get a battery with 3.7V 1500mAh capacity, i am not able to get one with the same 3 pin JST connector with a thermistor signal pin coming out. Having a part number of the one sent previously with the kit would help me to look for similar products

[dejans]

Hi,

This is the information shown on the battery - LiPo Battery 3.7V LP803450 1500mAh. Please let me know if you need further information.

Best regards,
Dejan

[SNJY]

Hi dejans,

i looked for this part online and found a couple of options. But none can be directly used with the nrf5340 Audio DK kit. None of those had the 3 pin JST-SH connector with an NTC pin. Is it possible for you to find any more information on the exact part that was shipped earlier with the kits?

[dejans]

Hi,

You can find specific information about the battery in the Bill of Material specification located in the nRF5340_audio-dk hardware files.

Best regards,
Dejan

[SNJY]

Thanks for sharing the link for the BOM and hardware files. I couldnt get much information on the exact manufacturer's part number for the LiPo battery that was sent with the kit previously.

Alternatively, I have ordered a similar battery with wires and ordered the mating connector (cable assembly) for J3 connector the nrf5340-AudioDK kit.

I will try this out and let you know if this setup works for me.

[dejans]

Hi,

SNJY said:

Thanks for sharing the link for the BOM and hardware files. I couldnt get much information on the exact manufacturer's part number for the LiPo battery that was sent with the kit previously.

Alternatively, I have ordered a similar battery with wires and ordered the mating connector (cable assembly) for J3 connector the nrf5340-AudioDK kit.

Thank you for the update.

SNJY said:

I will try this out and let you know if this setup works for me.

Good. Please let me know the result.

Best regards,
Dejan

[SNJY]

Hi Dejan,

Can you suggest me documentation or samples to test the battery out? Possibly getting to know the charging status of the battery, battery level and similar information from the nPM1100 on-board.

I tried using bt_bas_get_battery_level() (if that is one approach) but the value is always 100 even when the battery is disconnected.

[dejans]

Hi,

In nPM1100 product specification, there is a chapter on battery monitoring and low battery indication. If you have nrf5340-dk and nPM1300 EK, there are two nPM1300 pmic samples that you could use - one button and fuel gauge.

Best regards,
Dejan

[SNJY]

Hey dejans 

I took a pause on this for a while since i was working on the other part of the project.I have connected the battery to the board, all i can see is the chg LED lit and nothing else. I want to get more understanding about the battery voltage or maybe a simple fuel guage application.

I am using the nrf5340 Audio DK kit. This kit has an on-board npm1100 chip so, Is there a way to communicate with the chip? i see that the USB lines are connected to the usb-hub on-board.

Also, Is communication possible between the nrf5340 and the npm1100 on the Audio DK kit?

[dejans]

Hi,

nPM1100 PMIC on nrf5340_audio-dk does not have I2C interface or fuel gauging capabilities. You could try to use nrf5340-dk with fuel gauge sample instead. The fuel gauge sample also requires nPM1300-EK. 

Best regards,
Dejan