Thermistor value in Logitech Harmony LiPo batteries for RCs.

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digital_silence
Posts: 258
Joined: Sat May 22, 2004 6:33 am

Thermistor value in Logitech Harmony LiPo batteries for RCs.

Post by digital_silence »

Hi all,

Not exactly JP1 hardware question, but close enough.

If anyone owns the Logitech Harmony remote that uses the LiPo flat rechargeable battery (link below), and have a multimeter, can you please do me a small favor:

I am referring to this battery that is used across the range of Harmony models such as 785 and alike:
HARMONY BATTERY

This battery has three terminals: (-), (T), (+)
The (-) and (+) terminals are the 3.7V voltage output, and the (T) terminal is the contact of the thermistor which is connected between (T) and either (-) or (+) - more often than not, the thermistor is connected between (T) and (-)

I am asking you to measure the resistance of that thermistor.
First, please try to measure the resistance between (T) and (-) terminals (red positive mmeter lead goes to (T) and black negative mmeter lead goes to (-). I expect it to be about kohms or tens of kohms.
If that gives you the meaningless result, try to measure the resistance between (+) and (T) terminals (red positive mmeter lead goes to (+) and black negative mmeter lead goes to (T). I again expect it to be about kohms or tens of kohms.

Please write here the results of the measurements (kohms).

Thanks a lot if you can help.

Best,
DS
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