[sdiy] DX7 battery replacement help

cheater cheater cheater00 at gmail.com
Thu Sep 10 18:20:51 CEST 2009


Again you're increasing the temperature. Except this time, after you
take it out of the freezer.
I think David Dixon is better to ask for that sort of stuff.

On Thu, Sep 10, 2009 at 4:46 PM, Nathan M. Reeves <djservs at comcast.net> wrote:
> you know this is at odds at what i was told once to try and "kick start" a
> dead laptop battery...
>
> http://lifehacker.com/308225/revive-a-dead-laptop-battery-in-the-freezer
>
> the tech told me to put into the freezer for 24 hours and then try plugging
> it in to see if it held charge....
>
> IT didn't work so maybe it was a spoof!
>
> 8^)
>
> Cheers,
>
> nate
>
> On Sep 10, 2009, at 6:48 AM, cheater cheater wrote:
>
>> You can get some extra life from dead batteries by keeping them in the
>> warm for some time. Even put them on a heater (not for too long!)
>>
>> D.
>>
>> On Tue, Sep 8, 2009 at 9:18 PM, Tom Wiltshire <tom at electricdruid.net>
>> wrote:
>>>
>>> I used to work for an electronics company building dataloggers for the
>>> utilities. The loggers were powered by 3.6V lithium batteries, expected
>>> to
>>> last a decade or more. The thing that killed them more than anything was
>>> temperature. They'd often be fine when warm, or even reasonably cold, but
>>> after a spell of cold weather, a pile would turn up on the repair bench
>>> in a
>>> crashed state. A reset was often all they needed, since by then they'd
>>> warmed up, and they'd pass all the tests fine until you got them cold
>>> again.
>>> We used to replace the battery and then stick them in an environmental
>>> test
>>> chamber to check them over, and if they wouldn't wake up at -10C then
>>> they
>>> didn't go out the door.
>>>
>>> But I learned to be aware that batteries are a chemical process and that
>>> chemical processes typically go faster in the warm. It makes a
>>> significant
>>> difference.
>>>
>>> T.
>>>
>>>
>>> On 6 Sep 2009, at 19:49, Andre Majorel wrote:
>>>
>>>> Strangely, the battery voltage display did not always show the
>>>> same voltage, sometimes 2.8 V, sometimes 2.9 V, sometimes 3.0 V.
>>>> But it had been doing that ever since I bought it, about twenty
>>>> years earlier...
>>>
>>>
>>>
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