Can install 6pcs 18650 battey or 3pcs(must install alternation)(Battery Not Included). It need unprotected 18650 battery 2000-6000MAH. Charging Input: 5V/2.1A. DC Output: DC5.5 2.1-2.5MM 3.6V/2.5A;5V/2.1A;6V/1.8A;9V/1.1A;12V/0.6A (with current limiting and temperature protection).
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