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About product and suppliers:
        Alibaba.com offers 247 3100 mah products. About 70% of these are rechargeable batteries, 4% are power banks. 

A wide variety of 3100 mah options are available to you, such as li-ion, li-polymer, and electric. You can also choose from free samples, paid samples. 

There are 249 3100 mah suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Poland, and Turkey, which supply 98%, 1%, and 1% of 3100 mah respectively. 

100 mah products are most popular in North America, Western Europe, and South America. 

You can ensure product safety by selecting from certified suppliers, including 48 with ISO9001, 1 with BSCI, and 1 with Other certification.