The difference is the charge rate you will be limited to. The 50W model will be limited to 6Amps maximum whereas the 250W model goes up to 10Amps. If you have high capacity lipo cells such as 8000mah you can charge these at 1C or 8Amps. You'll only be able to charge at 6amps with the 50W model which is not a problem. It will just take a bit longer. What kind of cells will you be charging?
Last edited by rice_man; 02-15-2008 at 10:39 AM.
Reason: added question