Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site bnl.UUCP Path: utzoo!watmath!clyde!burl!ulysses!allegra!mit-eddie!genrad!wjh12!talcott!harvard!seismo!cmcl2!philabs!sbcs!bnl!mbeck From: mbeck@bnl.UUCP (Mark Becker) Newsgroups: net.analog,net.consumers Subject: NiCad Battery Recharging - watch out... Message-ID: <829@bnl.UUCP> Date: Sat, 15-Dec-84 06:24:01 EST Article-I.D.: bnl.829 Posted: Sat Dec 15 06:24:01 1984 Date-Received: Tue, 18-Dec-84 07:03:37 EST Distribution: net Lines: 26 Xref: watmath net.analog:129 net.consumers:1568 [For those that like to live dangerously...] Several years ago I was busy zapping life into dead nicads. One of cells proved stubborn so it was left on overnight recharge (*low current for a D-sized cell*) and in the morning I found that the cell had exploded, burying the casing into the wall about a foot from my head. A few months later one of the things destructed in my hands while zapping with a capacitor and a 15-volt supply. The incidents bothered me enough and started taking safety pre- cautions: facemask - why bother getting that stuff on your face? heavy gloves - ditto for hands. metal box for zapping - (insulated with sticky paper) if it explodes it might as well do it in there. There were a lot of articles published in Popular Electronics on how to "revive" dying carbon-zinc batteries... from fancy recharging circuits to "punching holes in the case and soaking in salt-water". Play it safe. Mark Becker UUCP: ...philabs!sbcs!bnl!mbeck ARPA: mbeck@BNL