Another possible solution is to use a Li-Ion external battery pack
powering the recorder via the DC power jack.
I've started using a BG10-14-88 Li-Ion pack from www.batterygeek.net,
which puts out somewhere between 11-12V DC under load when running a
HDP2 with phantom power and display backlighting enabled. A number
of manufacturers make similar products.
It is a reasonably expensive alternative to SLA's or AA's but is
relatively light at 680g, compact (165mm x 100mm x 19mm) and has
around 7500mAh capacity. For comparison a 7Ah SLA weighs in at
around 2.5Kg (151mm x 99mm x 65mm), and 3 sets of 8AAx2500mAh NiMH
cells at 30g each weighs in at 720g.
An alternative way to use the external packs would be to fabricate a
couple of "dummy" AA cells as shown towards the bottom of this blog
posting:
http://www.shoey.com/blog/index.php/2006/11/tascam-hd-p2-rechargable-
battery-system/
While the above article is written for the HDP2, the idea is equally
applicable to other recorders and battery packs, and would seem to
provide a more secure connection than the coaxial DC power jack.
hope this is of some use...
Paul
On 13/11/2007, at 9:04 AM, Danny Meltzer wrote:
> I'll let you know I used the Powerex's in my FR2 and after several [9]
> months they didn't hold a charge particularly well. I did end up
> having difficulty getting enough power to get through a day.
>
> I'd get some lithiums if you can, they really have quite a bit of
> juice.
>
> Depends on how long you'll be out of course.
>
> Danny
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