viking,
No, I thinking they only work for one battery. Amazon sells them for $30 each, free shipping, so you could buy two pretty cheap.
Or you can buy the dual bank trickle charger below for $99 @ http://www.batterystuff.com/battery-...l/GU2607A.html
Disclaimer: I don't know anything about this charger, just doing a little shopping for you :)
http://www.batterystuff.com/images/p..._series_lg.jpg