Was wondering if an aftermarket wall SE charger will properly charge the 660. As I would like to keep one charger at home and one at work...... I bought one online, it has an output of DC 4.5v-9.0v max 800mA. Model number ERI-T28. It is designed for an SE phone. Its documentaion states that it has with anti-overcharging circuitry.

The connecting plug on the 660 is the same as from their phones.

Of course the voltage of the headset battery is not listed in the shoddy SE documentation. Hopefully I am not frying the battery.

With all that said:
A) should I not be using this charger?
B) if not, then please provide a link to a more suitable charger.