I have an 8320 and recently bought a Jawbone and a Motorola S9 BT Headset. All the chargers have the same mini USB connection and same specs....probably a dumb question, but just to be safe, I assume I can charge my BB, and 2 BT headsets with any of the 3 chargers?

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Yes, it is safe. I have charged my bluetooth headset with the same USB cable that I use to connect the BlackBerry to the computer. And I have used the chargers from the Motorola phones to charge my BlackBerry and my headset.

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To be honest, unless u have to don't do it. Read through the label from the charger, some of them might have different voltage output. Not only that, the current output might different too. I've used the car charger for v3 for my bb and bluetooth headset. Works so far, but still for precautionary purposes, I would void it at all cost, its expensive after all, not to mention the frustration, Lol

The current output of any charger is only relevant by the device your charging. If you have a charger that outputs a maximum of say 400mA but the device your charging only requires 200mA then thats all the charger unit will provide. The output current ratings are a guide to the amount of current available if required.

The issue would be if the device needed 2A to fully charge and the charger you used was only rated at 1A one of two things would happen. The device would not charge at all (due to the devices internal charger circuit) or it would take twice as long to charge.

When it comes to voltage then yes there is the possibility of damaging your device if you use a charger that is rated at a higher voltage and sometime even if the charger is rated less. BUT what you will find is that most mini USB chargers will all have an output of 5V DC as this is the standard voltage output from your PC's USB port.

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Thank you for clearing that up. Awesome information. So the end of doubts as long as its dc for example pc usb ports or car charger if it fits it will work fine, at least won't blow anything up.

One question though for 4.2 os bb if plugged into desktop manager 4.1 or lower there will be a waring message saying insuffecient charging. What's that all about?