Hi, I have about SIX Duo batteries obtained in a recent trade. All were conditioned over & over using a Lind II, and tested in 2300c's w/ all battery saving tricks (cycling, screen dimming, etc.) Off: TYPE 3 / 48-50 minutes AVERAGE TYPE 3 / 14-16 minutes AVERAGE TYPE 2 / 4-6 minutes AVERAGE TYPE 2 / 3-5 minutes AVERAGE TYPE 1 / 3-5 minutes AVERAGE They're not much; and definetely cheaper than "new" ones...! Let me know if anyone is interested, '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' ''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' K. Ballard, Athens Georgia (GO DAWGS!) Mac Powerbook Sales "Sell'r of Fancy Cipherin' Devices!" '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''