Trying to identify battery pack component: PEPI U 44V+070C o

[RickRussellTX]

Hi all. I'm trying to identify a little component that came attached
to a battery pack. The battery pack is from my son's speech synthesis
device that he uses for home and school.

It's a small gray device labeled PEPI U on one side and 44V+070C or 03V
+070C on the other. Google search on variations of those code numbers
turns up nothing. The battery packs are of UK origin. I've posted a
picture at

http://picasaweb.google.com/rickrussell/Misc/photo#5223857006156936450

I suspect that this might be some kind of voltage limiter or charge
limiter designed to clamp down when voltage or current falls below a
threshold, to prevent the batteries from being overcharged inside the
device. I've installed new battery packs without the devices, but if
they are indeed designed to protect the devices, I can recycle the old
ones and re-use them. But I don't want to bother disassembling the new
packs unless it's important.

Thanks,

Rick R.

 

[Franc Zabkar]

On Wed, 16 Jul 2008 22:55:11 -0700 (PDT), RickRussellTX
<rickrussell@gmail.com> put finger to keyboard and composed:

Hi all. I'm trying to identify a little component that came attached
to a battery pack. The battery pack is from my son's speech synthesis
device that he uses for home and school.

It's a small gray device labeled PEPI U on one side and 44V+070C or 03V
+070C on the other. Google search on variations of those code numbers
turns up nothing. The battery packs are of UK origin. I've posted a
picture at

http://picasaweb.google.com/rickrussell/Misc/photo#5223857006156936450

I suspect that this might be some kind of voltage limiter or charge
limiter designed to clamp down when voltage or current falls below a
threshold, to prevent the batteries from being overcharged inside the
device. I've installed new battery packs without the devices, but if
they are indeed designed to protect the devices, I can recycle the old
ones and re-use them. But I don't want to bother disassembling the new
packs unless it's important.

Thanks,

Rick R.

It looks like a thermal cutout manufactured by Portage Electric
Products, Inc.

See http://www.pepiusa.com/

This is the "Standard Marking System":
http://www.pepiusa.com/marking.html

Your part number (03W+70C) indicates that the device was calibrated in
week 03 of 2005, has factory applied leads, and is rated for 70 +/- 8
degC.

The "44V" suggests a calibration date of week 44 in 2004.

"PEPI V" would suggest the "V" series:
http://www.pepiusa.com/modv.html

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.

 

[RickRussellTX]

On Jul 17, 12:25 am, Franc Zabkar <fzab...@iinternode.on.net> wrote:

It looks like a thermal cutout manufactured by Portage Electric
Products, Inc.

You have rocked my casbah, sir. But the sharif does like it!

That's good to know, I was worried that the trickle charger on these
things might overcharge if the device was not on the pack.

By the way, let me put in a plug for http://www.cheapbatterypacks.com/
, who built the 4.8V 2700mah packs for me. They are built like little
tanks.

Rick R.

 

[Franc Zabkar]

On Thu, 17 Jul 2008 06:58:24 -0700 (PDT), RickRussellTX
<rickrussell@gmail.com> put finger to keyboard and composed:

On Jul 17, 12:25 am, Franc Zabkar <fzab...@iinternode.on.net> wrote:
It looks like a thermal cutout manufactured by Portage Electric
Products, Inc.

You have rocked my casbah, sir. But the sharif does like it!

That's good to know, I was worried that the trickle charger on these
things might overcharge if the device was not on the pack.

By the way, let me put in a plug for http://www.cheapbatterypacks.com/
, who built the 4.8V 2700mah packs for me.

I see 2500mAh on the cells.

They are built like little tanks.

Rick R.

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.

 

[RickRussellTX]

On Jul 17, 2:55 pm, Franc Zabkar <fzab...@iinternode.on.net> wrote:

I see 2500mAh on the cells.

The old packs were 2500 mAh. The new packs (not pictured) are 2700
mAh.

Rick R.