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Trying to identify battery pack component: PEPI U 44V+070C or 03W+070C

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

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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.

Reply to
RickRussellTX
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On Wed, 16 Jul 2008 22:55:11 -0700 (PDT), RickRussellTX put finger to keyboard and composed:

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

See

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This is the "Standard Marking System":

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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:

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- Franc Zabkar

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Please remove one \'i\' from my address when replying by email.
Reply to
Franc Zabkar

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

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, who built the 4.8V 2700mah packs for me. They are built like little tanks.

Rick R.

Reply to
RickRussellTX

On Thu, 17 Jul 2008 06:58:24 -0700 (PDT), RickRussellTX put finger to keyboard and composed:

I see 2500mAh on the cells.

- Franc Zabkar

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Please remove one \'i\' from my address when replying by email.
Reply to
Franc Zabkar

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

Rick R.

Reply to
RickRussellTX

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