[CTSARA] Caumsett Park (reverse charged AA cell)

[John Sabini Jr.]

Reverse charging

Reverse charging, which damages batteries, is when a rechargeable battery is recharged with its polarity reversed. 
 
Reverse charging can occur under a number of circumstances, the two most important being:
 
When a battery is incorrectly inserted into a charger. 

When multiple batteries are used in series in a device. When one battery completely discharges ahead of the rest, the other batteries in series may force the discharged battery to discharge to below zero voltage.
 
Check the SARA web site for weather updates. 
SARA Web Address: http://www.ctsara.org/
 
J/S WB1GRB

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Stamford Amateur Radio Association

John Sabin Jr. WB1GRB
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John Sabini, WB1GRB: wb1grb at hotmail.com 
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> Date: Mon, 17 Aug 2009 00:22:07 -0400
> From: kb1qxr at arrl.net
> To: ctsara at mailman.qth.net
> Subject: Re: [CTSARA] Caumsett Park (reverse charged AA cell)
>
> On the reverse AA- yeah, I had one a few years back.
>
> A remote control device used a power pack of 6x AAA cells wired in series.
> Battery died much faster than it should have, so I took the pack apart and
> tested each battery- all were fine except one which was completely polarity
> reversed (but putting out a healthy voltage nonetheless). I suspect it was
> a weak cell that got reverse-charged by the others...
>
> -----Original Message-----
> From: Jonathan Solomon [mailto:jonstv at gmail.com]
> Sent: Sunday, August 16, 2009 8:35 PM
> To: ctsara Mailman
> Subject: [CTSARA] Caumsett Park
>
> Folks-
>
> Here is the park that is SSE of the Cove area. It is location on the North
> Side of Long Island, near the Huntington area. It's about a 2 hour drive...
>
> http://nysparks.state.ny.us/parks/info.asp?parkID=68
>
> Unfortunately, I'm not available on 9/19.
>
> On another note, has anyone every experienced a AA battery reversing
> polarity?!?
>
> '73s
> Jon
> W3EIC
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