{ "numMessagesInTopic": 18, "nextInTime": 2200, "senderId": "_LwzNv60nv0HDo8Uw7edIZYu3Y5cBU83yEFFMLdtYdw_igtkpTflAL7ckFkso3orOrlEhVR2HYcMxIZVrKwps1nHvPQl", "systemMessage": false, "subject": "Re: MPA MPD battery rebuild?", "from": ""wb8vlc" <may2142@...>", "authorName": "wb8vlc", "msgSnippet": "I have used the freezer trick and a rubber hammer on my MPA packs for several years now and it always works fine. For new cells I go to this company and", "msgId": 2199, "profile": "wb8vlc", "topicId": 466, "spamInfo": { "reason": "3", "isSpam": false }, "replyTo": "LIST", "userId": 490703911, "messageBody": "
--- In GE-Mpa@yahoogroups.com, "Christopher Bucca" <christopherbucca@...> wrote:
\n>
\n> Sometimes the old trick used on wall warts works. Put it in the freezer for a day, and then take it out and put it in a vise, squeezing it gently from one corner to another. Visualize the jaws of the vise contacting the right front top and the left rear bottom of the battery. Put enough pressure on it to get a crack going, and then shift the battery around in the vise to keep it (the crack) going all the way around the seam. Practice on some old wall warts first. Do it in a quiet place so you can hear the crack developing. Sounds weird, but give it a try!
\n>
\n> Chris K2IF
\n>
\n> ----- Original Message -----
\n> From: Ramon Gandia<mailto:wise60@...>
\n> To: GE-Mpa@yahoogroups.com<mailto:GE-Mpa@yahoogroups.com>
\n> Sent: Sunday, April 01, 2012 10:28 PM
\n> Subject: [GE-Mpa] MPA MPD battery rebuild?
\n>
\n>
\n>
\n>
\n> I was sitting around fat, dumb and happy and got to looking
\n> and realized that among all the MPD and MPA's I have here,
\n> I only have *one* good battery. Anything else either fails
\n> minutes after taking out of the charger, or does not work
\n> at all. the good one is the tall battery.
\n>
\n> You know, Police officers use "tall" MPA and MPD radios for
\n> batons. One blow to the head with one of these, and the
\n> suspect's skull is branded with a mirror image of "GE".
\n>
\n> So, reading this thread, I decided to take a look. You are
\n> right, all that is available seem to be tall NiCD's for lots
\n> of money. And those are in the 1100 mAh range using, I think,
\n> C-sized NiCD cells. Terrible.
\n>
\n> Well, I said, I have some links here, let me see ... web site
\n> out of business, battery outfit does not carry these batteries
\n> anymore, etc. etc.
\n>
\n> End result: MPA/MPD batteries are now *unobtanium*. Time to
\n> get serious, guys.
\n>
\n> What about putting NiMH cells into the carcasses? I hope I have
\n> not thrown out my carcasses! Yikes, only two left! For 20
\n> radios I have one good battery and two carcasses! They don't
\n> look at all easy to open up, but Batteriesamerica.com and
\n> others have "inserts" and "individual cells" with welded tabs
\n> already.
\n>
\n> Figure 6 of the Sanyo eneloop with tabs, AA, will give me a
\n> 2500 mAh battery. And a short one at that! Now we are cooking
\n> with gas! Charging should not be an issue in the regular GE
\n> rapid charger. (I have more chargers than batteries!).
\n>
\n> So guys, the question arises: How do you open up one of
\n> these batteries up to replace the cells?
\n>
\n> And while on the subject, what is wrong with those 3.3 volt
\n> computer backup coin cells with leads for the Memory battery
\n> in the MPD? I think it will stuff in ...
\n>
\n> --
\n> /|\
\n> Ramon Gandia, Nome, Alaska USA
\n>