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

[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

[goblynn93]

So the battery I thought I was going to get with my Audio DK is not going to come with my Audio DK and there's no option to purchase a battery from Nordic?

[dejans]

Hi,

It is not possible to purchase only batteries from Nordic.

Best regards,
Dejan

[goblynn93]

I have a battery for my nRF5340 DK (2-pin standard LiPO, very easy to find) but the Audio DK uses a 3-pin connector that I've never seen on a 3.7v battery.

3-pin LiPO are 7.4v dual cell batteries in the drone flying world and use larger connectors.

Is there a recommended battery for use with the Audio DK? (Understanding that it won't be from Nordic....) Or is that just a dead feature with no support anymore?

[dejans]

Hi,

goblynn93 said:

Is there a recommended battery for use with the Audio DK? (Understanding that it won't be from Nordic....) Or is that just a dead feature with no support anymore?

You can find information about the battery in the key features section of the nrf5340_audio-dk documentation. It is rechargeable Lithium-Polymer battery with 1500 mAh capacity. More specific information can be found in the BOM folder of hardware files zip for nrf5340_audio-dk.

Best regards,
Dejan

[goblynn93]

So the answer then is "No, there is no battery purchase support... You'll have to make your own at this point".

Got it. Not happy about it but you could have just said that.

[dejans]

Hi,

Unfortunately, it is not possible to purchase only batteries from Nordic.

Best regards,
Dejan

[goblynn93]

You referred me to the Key Features for the Audio DK and the Key Features says the kit comes with:

• Rechargeable Lithium-Polymer (Lithium-polymer (Li-Poly)) battery with 1500 mAh capacity

But it did not.

The battery that was supposed to come with the unit is a 3-wire battery. The battery that used to come with the kit as shown in YouTube videos is 3-wire.

The battery in the BOM is listed as "UFX 803450". That battery is 2-wire.

So here I am wondering if Nordic doesn't have a battery available is there possibly a pre-assembled, ready-to-go, 3rd party battery that can be recommended?

Or is there a proper battery with the 3-wire that can be recommended and then I'll put on my own connector?

I am not opposed to making my own but the information available doesn't seem to match what's needed.

[dejans]

Hi,

There are 3-wire batteries that you can find online if you search for Li-ion polymer battery 1500 mAh 3.7 V 3-wire battery.

Best regards,
Dejan