Hi team,
My customer considers employing BQ27520YZFT-G4 for 4.1 full charge voltage battery circuit and provided some questions.
[Problems]
Problems occurs when setting battery capacity value as follows when Golden File created
- 4.1V Charging(2800mAh)
→ File generation is passed, but when actually incorporated and used, as the learning of BQ27520YZFT-G4 progresses, FAC / FCC values decrease.
(2500 mAh before learning → 2100 mAh after learning: 25% decreased from inherent ability) - 4.2V Charging(3350mAh)
→ The result of learning cycle is not good after creating file.
(Update Status does not show "1" at SLUA902 Gauge set up and Golden file generation 2.6 Leaning Cycle Step.3
[Questions]
1. Could you provide any advice about decrease of capacity after learning when setting 4.1V capacity applying for 4.1V charging circuit?
2.. What if the customer uses Golden File which doesn't change update status to 1 as mentioned above, what kind of risk can be considered?
I look forward to hearing back from you.
Best regards,
Shota Mago
