I went from one nokia tdma to another nokia tdma. The new charger is a bit different than the old one, but the plug looks exactly the same. They have different model numbers, ACP-8U vs ACP-7U (i think). Will it work without causing a problem.
Generally no problem, but what phone do you have? The 8U and 9U are rapid chargers and the 7U is the standard charger. Check the web pages below...there are some differences. Go to www.nokiausa.com for these type of answers. In particular, go to http://www.nokiausa.com/nokia_accessories/chargers for the chargers you mentioned and which phones they work with.