Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10 5/3/83; site hou4b.UUCP Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxn!mhuxj!houxm!vax135!ariel!hou4b!dwl From: dwl@hou4b.UUCP (D Levenson) Newsgroups: net.analog,net.consumers Subject: Re: NiCad Battery Recharging - watch out... Message-ID: <1225@hou4b.UUCP> Date: Wed, 19-Dec-84 09:12:54 EST Article-I.D.: hou4b.1225 Posted: Wed Dec 19 09:12:54 1984 Date-Received: Thu, 20-Dec-84 23:38:54 EST References: <829@bnl.UUCP> Organization: AT&T Information Systems Laboratories, Holmdel, NJ Lines: 11 Xref: watmath net.analog:131 net.consumers:1585 A number of years ago, a Learjet aircraft was destroyed when its NiCad battery exploded in flight. Today, aircraft which use NiCads are required to have a safety system which prevents the thermal runaway that leads to this sort of an incident. These systems monitor the temperature in the battery compartment, the charge current, and the battery buss voltage. I don't know what algorithm they use in this monitoring, but they can shut down the charging system in time to prevent a catastrophy. -Dave Levenson AT&T-ISL, Holmdel