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I'm planning to use BQ24100 for charging Li-ion cells connected in parallel.

Unfortunately, the cells have to be separated by few centimeters, so I have to use 2 thermistors. So, how to connect 2 thermistors to BQ24100, since the IC has only one pin for thermistor?

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  • \$\begingroup\$ There isn't any way to do that, really. I think you will have to implement a window comparator to detect out-of-range temperature for one of the cells. When temp is out of range, you can pull the TS pin high or low to suspend charging. \$\endgroup\$ – mkeith Apr 14 '18 at 17:10
  • \$\begingroup\$ Or you could just sense one cell and make the assumption that both cells are at the same temperature. Whether that is acceptable depends on many things. \$\endgroup\$ – mkeith Apr 14 '18 at 17:12
  • \$\begingroup\$ Don't plan to use parallel cells. Without precise matching of charge and discharge curves the parallel cells won't last long. Find a bigger single cell. \$\endgroup\$ – Ale..chenski Apr 14 '18 at 21:17
  • \$\begingroup\$ Isn't it enough to just buy the same cells from the same manufacturer and seller? \$\endgroup\$ – Defozo Apr 16 '18 at 23:28
  • \$\begingroup\$ I believe that opinions vary on this. It will also depend on how fast you plan to charge and discharge the cells. \$\endgroup\$ – mkeith Apr 17 '18 at 2:43

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