德国采购需求：电池管理系统，BMS电池，BMS模块，锂BMS，BMS锂电池，Lifepo4的BMS

I'm looking for a solution to balance the four 12V LiFePO4 batteries I have installed in my electric scooter. My goal is to implement an automatic balancing system that can monitor the voltage status of each battery individually. Ideally, I would also like to have the capability to view this information directly on my smartphone for convenience. Could you please let me know if you have any products in stock that meet these requirements? I'm particularly interested in options that include app support for monitoring, rather than just a basic balancing system without connectivity features. Your assistance in this matter would be greatly appreciated.