Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!bionet!agate!ucbvax!tut.cis.ohio-state.edu!rutgers!att!cbnews!henry@zoo.toronto.edu From: henry@zoo.toronto.edu (Henry Spencer) Newsgroups: sci.military Subject: Re: Cold fusion on the battlefield... (batteries) Message-ID: <5469@cbnews.ATT.COM> Date: 7 Apr 89 03:04:46 GMT References: <5138@cbnews.ATT.COM> <5170@cbnews.ATT.COM> <5197@cbnews.ATT.COM> Sender: military@cbnews.ATT.COM Lines: 20 Approved: military@att.att.com From: henry@zoo.toronto.edu (Henry Spencer) >What about carrying batteries and recharging them at the Armored Transport >or other resupply point? This requires a certain level of battery technology, >which I know nothing about. The power problem becomes like the ammo problem; >how much does it (in batteries) weigh and how do we resupply - not cost. Battery technology is best described as neolithic. And that's being generous. Batteries are huge and immensely heavy for their energy content. There are various experimental designs that improve on this somewhat, but the word is "somewhat", not "greatly". (Case in point: a diesel-electric sub devotes a considerable fraction of its weight and volume to batteries, and in return gets an underwater endurance of a day or two at a speed of maybe two knots. I trust it's clear to everyone why nuclear subs were such a radical advance...) Henry Spencer at U of Toronto Zoology uunet!attcan!utzoo!henry henry@zoo.toronto.edu