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Vintage Simmons Drums (UK) Users Group

Index last updated: 2026-04-28 23:14 UTC

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sds7 battery

2018-05-01 by timington@...


hello
so glad I found this group!
I recently grabbed my old sds7 from my parents' basement where it's sat for the last 30 yrs...it appears to be in working order except for the battery.
when I powered it up last in the late 90s/early 2000s all the old sounds were still there but no luck this time. fiddling around with programming I found they could be rebuilt, but without the battery they can't be saved.
I've removed the card with the battery but am unsure what to do next. it is a green battery with a white cover. there is one like it on a wordpress site where the author states:

"Stock battery in my SDS 7 was a rechargeable 3.6V 110mAh NiCad. Modern replacement battery is a 3 cell 3.6V Ni-MH rechargeable backup battery, typical around 150mAh. mAh (milliampere hour) are not critical, but no need to overdo it. Anything between 100-200mAh should be fine."

is this correct?
I am not comfortable soldering a battery but I think I could remove the old one and put a new one in.
assuming the old one slides out of its harness, would the height of the replacement battery be an issue? or does the battery/harness have to be desoldered to be removed?
any help would be greatly appreciated!


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