[NSRCA-discussion] NiMH Question

[Dean Pappas]

Hey Bob,
Remember the old Orbit ads with the picture of someone flying his plane and then showing the battery with one "cutaway" cell?
 
 
 

Dean Pappas 
Sr. Design Engineer 
Kodeos Communications 
111 Corporate Blvd. 
South Plainfield, N.J. 07080 
(908) 222-7817 phone 
(908) 222-2392 fax 
d.pappas at kodeos.com 

-----Original Message-----
From: nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf Of Bob Richards
Sent: Friday, February 24, 2006 11:38 AM
To: NSRCA Mailing List
Subject: Re: [NSRCA-discussion] NiMH Question


>>>NiCad's normally fail shorted and you have enough power to land. NiMh's normally fail open and you will need another airplane to go with your new battery.<<<
 
Some of the old radios (Proline, for instance) had diodes across each cell in the airborne pack, in case a cell went open. Also, if a cell died (lost voltage) it would minimize the problem by preventing a cell from reverse charging.

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