[sdiy] DX7 battery replacement help

[cheater cheater]

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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