ดูจากคำแนะนำหัวข้อการเปลี่ยนแบตเตอรี
The original battery (battery size and type) as indicated in the vehicle's order specifications must always be installed to ensure correct operation of the on-board electrical system!
If the vehicle is equipped with an IBS (Intelligent Battery Sensor), the battery must be registered via the diagnostic system (ISTA) ; this process also registers the battery with the vehicle's on-board electrical system.
Standard batteries can always be replaced by AGM batteries with the same specifications.
Following either type of replacement, the vehicle registration process in ISTA/P must be supplemented by a vehiclec oding procedure, which is carried outas follows:
Read out battery size and registration from onboard electrical system: ISTA->Service functions->Body->Voltagesupply->Register_battery replacement->Test plan
ระบบไฟฟ้า ค่อนข้างซับซ้อน เค้าเลยแนะนำให้ใช้แบตเตอรีสเปคโรงงาน (DIN80) หรือสูงกว่า
https://www.realoem.com/bmw/enUS/showparts?id=PH17-THA-09-2009-E90N-BMW-325i&diagId=61_1986