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Author Topic: Tekkeon 3450i melted powering my 788t 3 nights ago at Mule  (Read 8199 times)

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Offline coloartist

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Tekkeon 3450i melted powering my 788t 3 nights ago at Mule
« on: September 17, 2012, 01:23:36 PM »
I was recording set #2 at Mule on Friday. My battery light started flashing on my 788t. I touched my Tekkeon and it was hot. I unplugged the Tekkeon battery cable and plugged it back in. The 788t battery light became stable. After that set I put a new battery in the 788t  and ran without the Tekkeon. I examined the battery and the main battery was melted.

I emailed Tekkeon and they said they would replace it but he wanted my specs from  my 788t. I told him I ran it at 12v.  Here is what he said:

Quote
I noticed the specs you provided says the audio recorder can be powered externally from 10-18V and a minimum of 4A. You may want to consider possibly using a higher voltage than 12V to lower the amp draw since it seems the device uses a minimum of 4A. The lower the voltage, the higher amps generally are required and if you use a higher voltage, lower amps are required. The more amps used, the hotter the components get.



« Last Edit: September 17, 2012, 02:03:44 PM by coloartist »
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Online rodeen

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Re: My Tekkeon 3450i melted powering my 788t 3 nights ago at Mule
« Reply #1 on: September 17, 2012, 01:41:01 PM »
Damn!  That must have been a blistering Mule set!
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Offline DigiGal

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Re: My Tekkeon 3450i melted powering my 788t 3 nights ago at Mule
« Reply #2 on: September 17, 2012, 01:44:35 PM »
Ouch! Thanks for sharing the info.  Is Tekkeon replacing the battery outside of warranty for you or was it still under time limit?
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Offline coloartist

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Re: My Tekkeon 3450i melted powering my 788t 3 nights ago at Mule
« Reply #3 on: September 17, 2012, 01:55:53 PM »
I just bought it at the end of February.

I also recorded a show on Saturday with my other set of Tekkeon's with no issues.
« Last Edit: September 17, 2012, 02:21:27 PM by coloartist »
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Re: Tekkeon 3450i melted powering my 788t 3 nights ago at Mule
« Reply #4 on: September 17, 2012, 03:09:28 PM »
Just checked battery university.  It says that the more discharged a battery gets, the higher the internal resistance.  It also suggests that if there's one weak cell in a pack, the internal resistance in that cell can be limiting.  Might provide some keys to what happened to your tekkeon.  (e.g. You mentioned recording another show with the tekkeons...where the batteries at or near being depleted?)

Nevertheless, throughout the battery university site, it discusses issues occurring when batteries are under heavy load.  I'm wondering if you need to get a battery with a higher amp rating than the Tekkeon to power your 788. 
« Last Edit: September 17, 2012, 03:14:31 PM by tonedeaf »

Offline coloartist

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Re: Tekkeon 3450i melted powering my 788t 3 nights ago at Mule
« Reply #5 on: September 17, 2012, 04:05:37 PM »
I recorded the other show with another set of Tekkeons. Both sets were fully charged when I started the night. The set that had the melting issue was more then half full on charge when the melting happened. I know many people that use the Tekkeons for the 788t. I have used them for 6 months with no issues. I haven't been taping as much as usual, though.
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Re: Tekkeon 3450i melted powering my 788t 3 nights ago at Mule
« Reply #6 on: September 17, 2012, 04:17:19 PM »
I hear ya man.   Just runing thru some possibilities for what happened.

Do your tekkeons have separate cables?  Could it be possible you have a shorted cable?  a couple of overheating events i've had in the past were cable related.
« Last Edit: September 17, 2012, 04:38:28 PM by tonedeaf »

Offline scb

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Re: My Tekkeon 3450i melted powering my 788t 3 nights ago at Mule
« Reply #7 on: September 17, 2012, 04:30:14 PM »
Damn!  That must have been a blistering Mule set!

that comment reminded me of the 10/11/02 Mule show at the Beacon where they were so good they brought the roof down


(heavy rain caused a leak and part of the ceiling fell down in the upper balcony)

Offline coloartist

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Re: Tekkeon 3450i melted powering my 788t 3 nights ago at Mule
« Reply #8 on: September 17, 2012, 05:06:48 PM »
I hear ya man.   Just runing thru some possibilities for what happened.

Do your tekkeons have separate cables?  Could it be possible you have a shorted cable?  a couple of overheating events i've had in the past were cable related.

I only have one cable. I used it the next night with my other battery set. I thought the same thing and was wondering if my other battery would melt the next night, but it was all good.
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Offline flipp

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Re: Tekkeon 3450i melted powering my 788t 3 nights ago at Mule
« Reply #9 on: September 17, 2012, 06:00:53 PM »
All the pics I've seen of the Tekkeon with the extended battery pack have the extend-a-pack on the bottom. As you have yours configured how do you set the voltage and determine the remaining charge with the display/voltage selector covered?

Offline coloartist

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Re: Tekkeon 3450i melted powering my 788t 3 nights ago at Mule
« Reply #10 on: September 17, 2012, 06:44:30 PM »
I assumed the front meters worked for both. You have to connect them that way because the connectors are on that side.
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Offline flipp

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Re: Tekkeon 3450i melted powering my 788t 3 nights ago at Mule
« Reply #11 on: September 17, 2012, 07:06:59 PM »
I was curious, don't have a 3450i or the extend-a-pack, just a 3450. I didn't realize there was a front meter option. I figured since Tekkeon showed the batt on top of the extend-a-pack that was the only way to run it. Looking at the brackets on the accessory page I see either unit could go in either position. Whatever the cause I hope Chris and the folks at Tekkeon replace it even if it is out of warranty. Bottom line is batteries shouldn't melt/explode/catch fire.

http://www.tekkeon.com/productcart/pc/catalog/mp3450i_r2_bundle_1773_detail.jpg
« Last Edit: September 17, 2012, 07:11:38 PM by flipp »

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Re: Tekkeon 3450i melted powering my 788t 3 nights ago at Mule
« Reply #12 on: September 17, 2012, 07:14:17 PM »
If the top and bottom batteries were switched from the way pictured by tekkeon could that have caused your burn out melting the case?
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Offline coloartist

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Re: Tekkeon 3450i melted powering my 788t 3 nights ago at Mule
« Reply #13 on: September 17, 2012, 07:28:51 PM »
The batteries only connect on the  one side, but you can stack either one on top I believe

I re-read your other question flipp, and I had only answered half of it.

I always put the main unit on top because I would assume that one controls the added batteries voltage.

The voltage on the model that melted is set with jumpers on the main unit. You don't have to plug the power cord in and pick the voltage. A far superior system then my other pair.

Again I assume the unit with the jumpers controls the other batteries voltage.

If it has to be stacked a certain way, Tekkeon should mention that. It would be a huge design flaw.  Also Chris @ Tekkeon didn't mention that is was stacked wrong in the pictures.
« Last Edit: September 17, 2012, 07:31:47 PM by coloartist »
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Re: Tekkeon 3450i melted powering my 788t 3 nights ago at Mule
« Reply #14 on: September 17, 2012, 07:47:04 PM »
DAMN Bro, luckily the 788t wasnt damaged :( I ran 7.2v RC Batts w/ my old 722 and at Phish Hampton 2009 3 night run, the 3rd night they searched my bag and roughed it up pretty good. I went to plug in my battery and get ready for the show and mine started melting as well :( I went to the bathroom and set it in there in case it kept melting. I didnt want to leave it in the OTS to ruin someone elses gear :(

Luckily, my buddy Mark had an extra 7xx battery and I ran the internal one just fine. But after that, I swore off external batteries unless at a festival :)
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