🥇01-03 BMW E39 E53 REAR TRUNK BATTERY VOLTAGE REGULATOR 8387543 OEM | eBay
3.1A Dual USB Car Charger LED Display for BMW E46 E39 E90 E36 E60 E34 E30 F30 F10 X5 E53 Accessories - AliExpress Automobiles & Motorcycles
The battery light stutters when the car is warmed up on idle. (01 540i, 6spd). This does not happen if the AC is on, or when engine isn't fully warmed up yet.
Amazon.com : Kastar 2-Pack Battery and AC Wall Charger Compatible with Sharp VL-E34U, VL-E37, VL-E37H, VL-E37S, VL-E37U, VL-E39, VL-E39S, VL-E39U, VL-E42U, VL-E43, VL-E43U, VL-E46, VL-E46U, VL-E47, VL-E47H : Electronics
BMW E39 5-Series Battery Replacement | 1997-2003 525i, 528i, 530i, 540i | Pelican Parts DIY Maintenance Article