I've had real good luck taking an exacto and running it inside the edge of=
the plastic cap on the eco-charge system batteries... the cap will pop off=
and all you have to do is un-hook the tab connectors and replace the SLA
(sealed lead acid) battery. Hook up the connectors on the new battery and=
test it... epoxy the cap back on in a couple of spots and you just "rebuilt=
"
the battery for 21. (or so). It really is a great system. I use similar
battries that have a more home-built feel and might involve some duct tape=
and lesser connectors.
--- Original Message -----
From: "Steve Pelikan" <>
To: <>
Sent: Thursday, January 26, 2006 10:35 AM
Subject: [Nature Recordists] Battery Woes
> Hi everyone --- I'd like your sage advice about powering my trusty DA-P1.
>
> When I got ready to fire it up a few days ago (Cardinals have been
> singing here in S Ohio for several days) I found that the internal Ni-Cd
> no longer holds a charge and my remaining external lead battery (from
> EcoCharge) has similarly given up the ghost. These circumstances aren't
> really unexpected; I've changed my car's battery at least once since I
> bought the EcoCharges.
>
> Rather than getting more NiCd or lead batteries (both pretty expensive
> and also requiring special disposal ---and being "green" is a
> significant consideration for me ---) I was wondering about hooking
> together 6 NiMH D cells and somehow managing to plug the recorder into
> them.
>
> The internal NiCd that came with the recorder is listed in the Tascam
> manual as 7.2V 1.4 Ah. and runs the thing for 90 minutes with phantom
> power on.
>
> >>>Am I correct that 6 D cells rated at 1.2 V and over 3000 mAh will
> probably do about twice that when (connected end to end)? That is, V's
> add and A's dont?
>
> Assuming that this scheme should work in principle, I have the problem
> of "getting the electrons into the recorder". The power connectionon
> the DA-P1 is a special plug I've seen nowhere else. Its rectangular in
> cross section and has 3 holes (connections) in it. The battery I'm
> imagining has 2 wires (connected to + and -).
>
> >>> Any ideas on how to accomplish my connection? I could snip off the
> plug that came with the ecocharge batteries, but would still need to
> know how to determine which holes get connected to which wires (+/) and
> what to do with the third connection which I presume is a ground of some
> sort. (But wearing boots, I'm not grounded anyway?)
>
> >>>Finally, assuming all of the above considerations pan out, I'd
> appreciate/suggestions instructions/useful leads on how to go about
> actually putting these parts together in a
> sturdy-yet-compact-and-reliable container that I could carry into the
> field.
>
> I can't express how weak my understanding of both the electrical
> considerations and the actual hands on stuff required to build and
> connect things is --- especially compared to what most everyone in this
> group seems to know and know how to do. So you can't possibly go wrong
> by telling me elementary step-by-step kind of stuff!
>
> THANKS IN ADAVANCE for any and all suggestions and instructions you can
> offer. If this sort of topic is too boring for posting, I'd appreciate
> emails anyway and will later summarize what I learn and describe what I
> actually do and how it worked.
>
> Steve P
>
>
>
>
>
> "Microphones are not ears,
> Loudspeakers are not birds,
> A listening room is not nature."
> Klas Strandberg
> Yahoo! Groups Links
>
>
>
>
>
>
>
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