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About product and suppliers:
        Alibaba.com offers 2,931 30a bms products. About 19% of these are electric bicycle battery, 16% are other pcb & pcba, and 1% are battery testers. 

A wide variety of 30a bms options are available to you, such as li-ion, li-polymer. You can also choose from sponge, fabric. As well as from paid samples, free samples. 

There are 2,931 30a bms suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of 30a bms respectively. 

0a bms products are most popular in North America, Western Europe, and Northern Europe. 

You can ensure product safety by selecting from certified suppliers, including 836 with ISO9001, 227 with ISO14001, and 217 with Other certification.