Vintage Simmons Drums (UK) Users Group

vout@... skrev 2012-03-18 16:34:
> Hi,
>
> Okay, now I'm confused and this is why I asked here seeking informed
> opinion. I did some searching before asking this question and there
> seems to be a lot of contradictory advice out there about suitable
> replacements for ni-cads.
>
> The big problem for me is battery leakage, so from that standpoint NiMH
> is not a good option as it seems they can leak just as badly. The
> consensus seems to be that Lithium batteries are the least likely to
> leak, though they can in very rare and extreme conditions.
>
> Lets be clear that I am talking about using a non-rechargeable and
> fairly high capacity Lithium battery (AA size probably) and removing or
> blocking the existing charging current in the way described by Jesper.
> It works for him and I think it will be a good solution for me too. Also
> I have seen people using Lithium CR2032 button cells to provide memory
> back-up in TR-606's and TB-303's so it does seem to be a workable solution.
>
> Cheers, vout

That was my train of thoughts too. One of my MTM's was quite messy and 
the SDS-7 not a pretty sight either. I took some scary shots when 
changing that one. Will make a "how to-page" one of these weeks/months. 
My main concern wasn't loosing memories. It was leakage in the future. 
10 years passes so quickly... 20 too by the way. Also, I decided to go 
with AA-battery size and mount it far from the PCB. I've done the same 
in other gear and have another battery + holder here on my workbench 
that's intended for my OSCar soon, very soon.
I'm against "drop-ins" due to their place on the PCB. I'm against NiMh 
due to the fact that they leak more easily. I prefer AA in a holder 
since it's easy to replace. I want to be able to do that while the unit 
is powered and don't mess with memory backup on external media.

These are just my opinions. Gordon has his and if it works for him, all 
the better! We all use our gear in different ways. We are differently 
skilled in soldering and messing about inside. Some gear are annoying to 
program (SDS-7) and some a lot easier (MTM).

Keep banging those hexaheads!

-- 
electronically yours, jesper

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