Well it does limit the options, your right. However, ELK products does have
a nice little 6 volt 7.5 amp hour that could be connect in series (2) for a
12 volt 7.5 amp hour pack, or series parallel (4) for a 12 volt 15 amp hour
pack, and would fit (at least two of 'em would) as the smallest dimension is
1.34 inches. These are sealed lead acid AGM batteries - - - bumper

ELK-0675 6 Volts, 7.5 Ah
ELK Sealed Lead Acid Batteries are excellent for the following
applications with regard to size, Amp hour rating, and proper terminal
connections: battery backup (for Access Control Systems, Fire Alarm Systems,
and Security Alarm Systems), emergency lights, lighted exit signs, and
uninterruptible power supplies.


SPECIFICATIONS:
. Nominal Voltage:
. Rated Capacity:
. Length:
. Width:
. Height:
. Total Height w/ terminals:
. Weight:
. Terminals: 6 Volts
7.5 AH (20 hour rate)
5.91" (150mm)
1.34" (34mm)
3.70 (94mm)
3.90" (99mm)
3.08 lbs (1.4kg)
F1-Faston Tab No. 187




"David Kinsell" wrote in message
. ..
Mike the Strike wrote:
I am looking for a US source for a rechargeable (preferably gel or
sealed lead-acid) for the fin battery box of a Schempp-Hirth. I need
the extra power as well as the tail weight! Dimensions are
approximately 10 inches long, 4 inches wide and 1-1/2 inches deep.

I've found a few single-cell solutions that I could make work but
wondered if there was an off-the shelf item that would fit?

Thanks....

Mike


That 1 1/2 inch depth constraint really limits your options. Feel
fortunate if you can make up your own solution from single cells,
or find a battery shop to do it for you.

-Dave