Expose battery percentage via standard Bluetooth methods

Discord thread: https://discord.com/channels/1192313062041067520/1450700506489163817

Should 3rd party apps, in theory, be able to read the Omi Dev Kit 2's battery status/percent charge?

Specifically it'd be great if the android "Multi-Device Energy Monitor AI" app would work with it. This app allows battery use to be graphed over time, and gives estimates of run times.

https://watchandnavy.com/bluetooth-device-monitor/#bluetooth-connectivity-types

https://play.google.com/store/apps/details?id=strange.watch.longevity.ion

For reference:

---------- Forwarded message ---------

From: Liam Akakpo <la@watchandnavy.com>

Date: Wed, Dec 17, 2025, 4:10 AM

Subject: Re: Energy Monitor: "Which Bluetooth devices can I monitor? Is there any way to troubleshoot if a device does not appear?"

To: <djbclark@gmail.com>

Hi Danny,

Thanks for getting in touch. Energy Monitor can only monitor Bluetooth

devices that expose their battery level via standard Bluetooth

protocols. Some devices, including dev kits and custom hardware, use

proprietary protocols, which means their battery data isn’t visible to

other apps.

If a device connects but doesn’t appear in the app as a compatible

device, it usually means its battery level isn’t being exposed in a way

Android allows third-party apps to read. The same applies when designing

custom hardware. Battery data needs to be exposed via the standard

classic or LE protocols in order to be read by Energy Monitor. Most

earphones work in this way so that their battery levels can be read by

all kinds of devices without any additional drivers or OEM software

installed.

We have written a guide to monitoring Bluetooth devices and

troubleshoting them here:

https://watchandnavy.com/bluetooth-device-monitor/#device-compatibility

I’ve noted this down to get it in the FAQ and potentially make this

clearer in the app. Many thanks for the thoughtful feedback!

Best regards,

Liam @ Watch & Navy