Battery Source

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

Mouser has a large selection of sealed lead acid batteries.
http://www.mouser.com


At 02:36 26 September 2005, 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

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

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

"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



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




Top posting mistake corrected, and formatting problems fixed.
Please folks, no top posting, it screws up the readability when
you do that. Particularly when the correct bottom-posting has
been established. It's like joining a thermal in the wrong
direction, but in this case, there's only one right way to
circle.

Back to the battery. Each battery has a length of almost
6 inches, so you can't fit even two of them in the 10 inches
provided. Four would take a real trash-masher to squeeze
them in.

Plus, you'd end up with a 12 volt battery trying to power
a 14 volt radio, so you'd get about half the rated capacity
before the transmitter craps out. But that's a little
too technical for this crowd.

-Dave

David Kinsell wrote:

"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




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




Top posting mistake corrected,

I'd call it a preference instead of a mistake, but I also prefer bottom
posting.

and formatting problems fixed.
Please folks, no top posting, it screws up the readability when
you do that. Particularly when the correct bottom-posting has
been established. It's like joining a thermal in the wrong
direction, but in this case, there's only one right way to
circle.

Back to the battery. Each battery has a length of almost
6 inches, so you can't fit even two of them in the 10 inches
provided. Four would take a real trash-masher to squeeze
them in.

Plus, you'd end up with a 12 volt battery trying to power
a 14 volt radio, so you'd get about half the rated capacity
before the transmitter craps out. But that's a little
too technical for this crowd.

Now, now, Dave, Mike didn't indicate it was for a 14 volt radio, or even
that it was for a radio at all. Maybe it's to back up his logger and
vario. And, 14 volts might not be compatible with his other battery(s).
Before prescribing solutions, the volt doctor should determine the problem!

--
Change "netto" to "net" to email me directly

Eric Greenwell
Washington State
USA

Eric Greenwell wrote:
David Kinsell wrote:

"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




bumper wrote:
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 AlarmSystems, and Security Alarm Systems), emergency
lights, lighted exitsigns, and uninterruptible power supplies.


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




Top posting mistake corrected,

I'd call it a preference instead of a mistake, but I also prefer bottom
posting.


Doing top-posting after bottom posting had been initiated in a string is
a mistake by any reasonable definition.


A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What's the most annoying thing on Usenet and in email?

http://www.caliburn.nl/topposting.html


and formatting problems fixed.
Please folks, no top posting, it screws up the readability when
you do that. Particularly when the correct bottom-posting has
been established. It's like joining a thermal in the wrong
direction, but in this case, there's only one right way to
circle.

Back to the battery. Each battery has a length of almost
6 inches, so you can't fit even two of them in the 10 inches
provided. Four would take a real trash-masher to squeeze
them in.

Plus, you'd end up with a 12 volt battery trying to power
a 14 volt radio, so you'd get about half the rated capacity
before the transmitter craps out. But that's a little
too technical for this crowd.

Now, now, Dave, Mike didn't indicate it was for a 14 volt radio, or even
that it was for a radio at all.

And what radio do you suppose he's using if it's not a 14 volt radio?


Maybe it's to back up his logger and
vario.

Both of which would work better on 14 volts. You do know it's been
the standard for small aircraft electrical systems for what, 50,
75 years now?? A bunch of cheap-ass glider pilots aren't about to
change that fact, are they?


And, 14 volts might not be compatible with his other battery(s).

You don't think he's going to actually hook the batteries together
do you? That would blow the tail clean off the glider, if you believe
what you read in RAS!!


Before prescribing solutions, the volt doctor should determine the problem!

It's not real hard to divine the problem with most electrical systems.
Not enough volts, too many pounds of dead weight in improper batteries.
Not a hard diagnosis at all.

-Dave

Thanks for all the suggestions. Actually, I've used 12-volt batteries
in all my gliders and never had a problem. This 12/14 V argument is
really unnecessary! Good German instruments like the Becker and Dittel
radios are quite happy with a 12-volt supply.

The solution to my problem is a two-pack of 6V 7 Ah batteries which fit
the space quite nicely.

Mike the Strike wrote:
Thanks for all the suggestions. Actually, I've used 12-volt batteries
in all my gliders and never had a problem. This 12/14 V argument is
really unnecessary! Good German instruments like the Becker and Dittel
radios are quite happy with a 12-volt supply.

Happy?? With a fresh battery, they work for a while, but die after only
part of the rated capacity is used up. Understanding such a complex
issue is way beyond the comprehension of most glider pilots, apparently.

If your current batteries were working so well, I don't suppose you'd be
needing to add yet another one. Seems like the people who run 12 volts
are the ones always looking to find somewhere to cram more batteries
into their glider. Gee, I wonder why??

Hi David,

You crack me up.

I highly recommend 12V systems in gliders. You can save yourself a lot of
money and hassle by using 12V batteries.

The design of radios has changed a lot in recent years. Good radios don't
require 14V batteries. Low cost and old radios do prefer 14V power.

Good Soaring,

Paul Remde

"David Kinsell" wrote in message
...
Mike the Strike wrote:
Thanks for all the suggestions. Actually, I've used 12-volt batteries
in all my gliders and never had a problem. This 12/14 V argument is
really unnecessary! Good German instruments like the Becker and Dittel
radios are quite happy with a 12-volt supply.

Happy?? With a fresh battery, they work for a while, but die after only
part of the rated capacity is used up. Understanding such a complex
issue is way beyond the comprehension of most glider pilots, apparently.

If your current batteries were working so well, I don't suppose you'd be
needing to add yet another one. Seems like the people who run 12 volts
are the ones always looking to find somewhere to cram more batteries
into their glider. Gee, I wonder why??