![Battery Maintenance and Problems by Mike Fishwick | BMW Z1 Z4 Z8 Z3 Forum and Technical Database - ZRoadster.org Battery Maintenance and Problems by Mike Fishwick | BMW Z1 Z4 Z8 Z3 Forum and Technical Database - ZRoadster.org](https://zroadster.org/wp-content/uploads/2012/03/TypicalBMWbatterys.jpg)
Battery Maintenance and Problems by Mike Fishwick | BMW Z1 Z4 Z8 Z3 Forum and Technical Database - ZRoadster.org
![Battery Maintenance and Problems by Mike Fishwick | BMW Z1 Z4 Z8 Z3 Forum and Technical Database - ZRoadster.org Battery Maintenance and Problems by Mike Fishwick | BMW Z1 Z4 Z8 Z3 Forum and Technical Database - ZRoadster.org](https://zroadster.org/wp-content/uploads/2012/03/Checkingspecificgravitys.jpg)
Battery Maintenance and Problems by Mike Fishwick | BMW Z1 Z4 Z8 Z3 Forum and Technical Database - ZRoadster.org
![Amazon.com: BMW Genuine Battery Mount Tray Hold Down Mounting Screw 190MM 325e 325i 325ix 840Ci 840i 850Ci 850CSi 740i 740iL 740iLP 750iL 750iLP 525i 528i 530i 540i 540iP M5 323Ci 325Ci 330Ci Amazon.com: BMW Genuine Battery Mount Tray Hold Down Mounting Screw 190MM 325e 325i 325ix 840Ci 840i 850Ci 850CSi 740i 740iL 740iLP 750iL 750iLP 525i 528i 530i 540i 540iP M5 323Ci 325Ci 330Ci](https://m.media-amazon.com/images/I/41NGpZU7auL._AC_UF894,1000_QL80_.jpg)
Amazon.com: BMW Genuine Battery Mount Tray Hold Down Mounting Screw 190MM 325e 325i 325ix 840Ci 840i 850Ci 850CSi 740i 740iL 740iLP 750iL 750iLP 525i 528i 530i 540i 540iP M5 323Ci 325Ci 330Ci
![Anyone know what this is? I've been having problems with my Z3 leaking rain into the trunk for awhile and this hose is just sitting next to the battery. : r/bmwz3 Anyone know what this is? I've been having problems with my Z3 leaking rain into the trunk for awhile and this hose is just sitting next to the battery. : r/bmwz3](https://i.redd.it/q01qwsdlmzd41.jpg)