EGO and car charger

[Windpray]

I just ordered the EGO manuals and got a fast UBS charger, from what I can understand the fast UBS charger will work to charge all the EGO's even the 900 and the 1000 mah, but can you connect it to the car charger and can you charge the ego's that way. The car charger I have will charge the V4L XL manual battery but I am not sure about the EGO. Now I do not understand electricity currents so please just tell me yes it will or no it won't, I wouldn't understand anything else