If it's an HS850 it does used the same charger as the V551.
as far as bonding the HS850 with your v551, turn on your headset with the boom mic closed, as soon as it turns on flip the boom mic open and your headset should show a steady blue light, that tells you it's ready for bonding with your phone, once your V551 finds the HS850 it will ask for a code, enter
0000 and you're done.