MJLorton Solar Power and Electronic Measurement Equipment Forum

General Category => General Discussion => Topic started by: cossy350 on September 27, 2014, 03:16:32 PM

Title: help
Post by: cossy350 on September 27, 2014, 03:16:32 PM

hi can any 1 tell me what this is the No on it is nf 050682 7k it is inside a drill battery and i think its for stopping the battery overheating what is it call and where can i get them thanks

Title: Re: help
Post by: SeanB on September 27, 2014, 04:02:51 PM

Common bead thermistor, used to sense the battery temperature to allow the charger to stop the fast charging when the battery starts to heat up when charging is finished.

Most likely a NTC type, probably a 7k at 25C one. Measure the resistance of it, it should be in the range of 2k to 10k at room temperature. Probably  RS stock no. 697-4522 if it is around 6-7k at room temperature. Those are cheap at around 1 euro each from RS.

Title: Re: help
Post by: cossy350 on September 27, 2014, 04:26:58 PM

thanks alot