Rechargeable batteries and charger?

i have an instrument, bought at the US with rechargeable batteries (works at110v/60hz). Im using that device in the local network of 220v/50Hz with a

i have an instrument, bought at the US with rechargeable batteries (works at110v/60hz). I'm using that device in the local network of 220v/50Hz with a proper transformer. After few years the battery need to be replaced. Can I buy a local battery and it will be recharged by the local network (with the same transformer of course)?
Does the following will work: Wall outlet (220/50) ->transformer (220/50:110/60) ->rechargeable battery?

or:i have an instrument, bought at the US with rechargeable batteries (works at110v/60hz). I'm using that device in the local network of 220v/50Hz with a proper transformer. After few years the battery need to be replaced. Can I buy a local battery and it will be recharged by the local network (with the same transformer of course)?Does the following will work: Wall outlet (220/50) ->transformer (220/50:110/60) ->rechargeable battery?

Tags:charger,