Hi team
My customer encountered a question about BQ28Z610 they used it for 2S pack.
1、Pack's voltage is 8.65V after fully charged, they left Pack for more than 8 hours(don't plugged into the adapter, and no load), some Pack's voltage become 8.3V, and the charge MOSFET is off, state of gauge register shows the cell OVP. but they set the cell's OVP threshold is 4.4V, and gauge shows the voltage of cell is 4.3V.
2、For the remaining 8 packs that did not appear to be protected, customer used them walkie-talkie(EE) to simulate EMI interference around Pack. The frequency bands are 136-174MHz and 350-520 MHz. After the interference, no protection is found immediately, but after left for a period of time, 5 of all these 8 packs showed the cell OVP, and Q3 is closed;
Can you give some advices about this question?
