Vintage Simmons Drums (UK) Users Group

My solution is to replace the old Nicad battery with a standard Lithium cell 
CR-2032.

You will need to install one 1N4148 diode in series with the + side of the 
CR2032 to stop the charging voltage otherwise the CR2032 might explode!!!

WT

----- Original Message ----- 
From: "jesper" <jesper@...>
To: <Simmons_Drums@yahoogroups.com>
Sent: Wednesday, December 07, 2011 10:29 PM
Subject: Re: [Simmons Drums] MTM battery


> Mark Frost skrev 2011-12-07 22:00:
>> I'm sure mine must need changing after 15 years. Whats the procedure?
>> I'm thinking Maplins will have a replacement - would that be right? And
>> if anyone has a part No or any other info I would be gratefull.
>>
>> Thanks in advance.
>
> I'd suggest a non-rechargeable long-life nicad battery. This to avoid
> future leakage. Get a AA-type and a socket for it. Place it far off the
> PCB and remove the recharging circuit (if I recall correct it's just one
> component). I hope your battery hasn't leaked on the PCB yet. It can be
> scary...
> In times like these you realise you ought to take more shots of the
> procedure while at it. :S
>
> No part no to recommend since I bought my stuff here, among the polar 
> bears.
>
> -- 
> electronically yours, jesper
>
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