Searching for a DC Battery only charger

Hi,
I have a Motorola RAZR V3M phone that I'm looking for a separate car battery charger for. All I can find seems to be the AC wall outlet chargers or automotive chargers for just the phone. I just like to keep a charged up battery in the car. I have a Samsung phone with a separate battery charger that I connect with an I-GO adapter and it works just great. But the Samsung phone is getting pretty old so I want to switch to the RAZR V3M
Can anybody tell me where to find a battery only DC charger for the
RAZR V3M? It would be much appreciated.
Skip

you can buy DC charger for the RAZR V3M from amazon.com.

for your convenience, have a look at the following link:
Amazon.com: Motorola RAZR V3 Battery Charger SYN1912A for BR50 BR56: Electronics

hope this helps.