On Wed, 16 May 2018, joe heck via cctalk wrote: NiCd batteries were readily available in 1985. They were invented around 1900, and were available in USA since about 1946? HOWEVER, admittedly, their capacity was somewhat inadequate. Also, their voltage was around 1.25V, when zinc-Carbon and Alkaline batteries were 1.5V. Therefore, they were a somewhat unacceptable replacement for disposable batteries. Nevertheless, for situations that required rechargeables, where lead-acid was too heavy, they were available, and widely used. Over half a century ago, I used electronic flash guns that used NiCd's. A 1985 NiCd battery pack would not have had a long life even in a Kaypro 2000, and would end up being used mostly for moving it from one mains outlet to another. I remember an interview with Lee Felsenstein, in which he was asked how much a battery power unit for the upcoming Osborne would weigh. He reponded that the external DC connection was currently for use with a car. (Lee was driving a Honda Accord). Perhaps you are thinking of NiMH, which seem to have been around less than 30 years. THOSE were/are way better than NiCd in capacity. Much more recently, of course, the trend has been to Lithium batteries. -- Grumpy Ol' Fred cisin at xenosoft.com

The manual and the other documentation I've found online boasts a 4 hour useful runtime (with light to moderate floppy use) with a 24 hour charge. And yes, the unit is heavy, at about 13 pounds. Joe On 5/17/2018 1:17 AM, dwight via cctalk wrote: