Eskil;627830 Wrote: > Before buying my battery pack I considered building one myself, and > looked in vain for tech info. > So here are my findings: > 10PCS 2000mAh Ni-Mh AA-cell > 1 temperature sensor > 10-pin JST PHD-series connector > Following the numbering convention from the JST datasheet: > Pin 9: Black, 0V > Pin 7: White, Temperature sensing resistor of some sort. 11K at 27C, > other end at pin 9 > Pin 5: Green, 3.9V, 3 cells "up" from pin 9 > Pin 3: Brown, 7.9V, 3 cells "up" from pin 5 > Pin 1: Red, 13V, 4 cells "up" from pin 3 > > It's nice to see that the cells are protected against > over-temperature. > It's also the reason not to try to copy it, as the temperature sensor > signal is probably well integrated into the charger electronics. > It's also rather nice to avoid fire from the batteries due to the over > temperature shut down. > > I haven't temperature-swept the temperature sensor to get a curve from > it. > > In other words, I don't recommend making a DIY battery.
Dont forget the resistor 191 Ohm for pin9 and pin5. Also don´t forget, to buildin a temperature-fuse approx 75° Celsius. 10kOhm 25° Celsius is okay Seems for me that u haven´t spent a long time to collect all data for ur DIY. CU Josh -- joshuar ------------------------------------------------------------------------ joshuar's Profile: http://forums.slimdevices.com/member.php?userid=37439 View this thread: http://forums.slimdevices.com/showthread.php?t=87318
_______________________________________________ Radio mailing list Radio@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/radio
