The part number is 663-37655-90 and retail price is $70.50. The voltage is 8.94 volts using 240volt.
You should be able to get a charger at [Censored] smith or Tandy that will do the job but you will also need to buy the correct connection so that you can plug it in to the battery.
Regards,
Bruce
Please do not PM me asking for support. Post on the forums as it helps all members not just the individual.