Check the Battery Voltage in a BMW E39 E38 X5 E46 with high cluster - YouTube
BMW Alternator Replacement needed if the Battery light comes on? - Car Repair, & Performance | Fluid MotorUnion | 2108 W. Ferry Rd. Unit 102 Naperville, IL
BMW E39 OBC hidden menu (diagnostic mode) - mr-fix.info
DIY how to test a BMW E39 battery & alternator (discussion) | BimmerFest BMW Forum
How to test a BMW E39 battery & alternator (discussion) by bluebee | diys
DIY how to test a BMW E39 battery & alternator (discussion) | BimmerFest BMW Forum
Car Diagnostic Tool Auto Battery Tester For Bmw E46 E90 E60 E39 E36 E34 F10 F30 F20 X5 E53 E70 E87 E92 E91 G30 E30 M3 M5 - Battery Measurement Units - AliExpress