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About product and suppliers:
        Alibaba.com offers 44,450 backup battery products. About 20% of these are power banks, 11% are rechargeable batteries, and 9% are storage batteries. 

A wide variety of backup battery options are available to you, such as 3000-4000(mah), 15001-20000(mah), and 10001-15000(mah). You can also choose from white, blue, and green. As well as from li-ion, li-polymer, and ni-mh. And whether backup battery is free samples, or paid samples. 

There are 44,273 backup battery suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Taiwan, which supply 98%, 1%, and 1% of backup battery respectively. 

Backup battery products are most popular in North America, Western Europe, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 15,352 with ISO9001, 6,920 with Other, and 3,488 with ISO14001 certification.