Not sure if it is the correct charger or not...BUT...we have been using a cig cord charger from our motorola razr phones to charge the Palm Z22 on occasion. Have only used the cig cord when the Palm battery got really low on power. Like I said, not sure if this is good for the battery or not, but so far so good for us. We also use this same cig cord to power our Garmin 60cx when in-route to caches and batteries are low.
Hope this info is of some use!
TOMB KaBOOM