Where can I buy Tevion Binatone base batteries ?

Use Google
Select Images
enter 2.4v 550mAh

Look at the pictures - concentrate on the connector style and the profile/size of the battery.

Do not worry too much about the mAh rating - the bigger the better if it fits - a bit smaller will probably be ok - connector and voltage are important.

When you see one that looks like yours then follow the link.

More simply - Amazon have dozens of 2.4V 600mAh batteries on offer

Peccavi
June 2013