I need to replace the boom on my Motorola H730.Does anyone know where I can purchase a replacement boom?

It is possible to have the battery in your Motorola H730 headset replaced, but it would likely need to be done by a third-party repair service as the battery is not typically user-replaceable.
Motorola does not offer an official repair service for the H730 headset, so you may need to find a third-party repair service that specializes in repairing Bluetooth headsets. Be aware that third-party repairs may void any remaining warranty on the device.
You can also consider purchasing a new headset if you prefer not to have it repaired.

This is the complicated issue when you don't know if the problem is with your charger, the battery or simply the cable .
If you don't have a testing device, I suggest you to check the charger at some electronic repair shop so they should detect the origin of your problem

Try unpairing the phone and the Bluetooth headset. Also ensure that you always have the boom on your headset open while trying to use it. The Boom is the on/off switch.

Mark
Motorola Support

Close the boom on the headset and plug it in. If it doesn't work try another charger to confirm it isn't your charger.

Mark
Motorola Support

Have you charged with the boom closed? is there any light when you open the boom after charging?

Mark
Motorola Support

I would unpair and try pairing again. Ensure you open the boom. It will not connect if the boom is closed.

Mark
Motorola Support

Contact Motorola Support. They may be able to order the part for you.

Http://www.motorola.com/support

Mark
Motorola Support

Delete the pairing on the phone and then re-pair. Also ensure your headset is fully charged. It should autopair with your phone after a reset when you open boom if phone has bluetooth turned on and is in range.

Mark
Motorola Support

Tamika-

Do you have another charger to test with your headset? Make sure you have the mic boom closed when charging.

Mark
Motorola Support
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Jess

Are you charging with boom closed and closing boom when not in use?

Mark
Motorola Support