This is a DIY 20,000MAh power bank, it makes use of any number of 18650 batteries and the highest it can take is 7 batteries
Products include only the case and the motherboard (solder-free type) the batteries are not included, and there is not charging cable included. You can use old laptop batteries, they word excellently well with this power bank, or you purchase a new 18650 set of batteries.
Battery Type: 18650 battery (flat head, without protection board, each voltage must be between 3.3-4.2V)
Conventional version: 5V / 2A ;
Fast charge version: 5V / 3 A, 9V / 2A, 12V / 1.5A;
Fast charge version of the agreement for the QC3.0 agreement (support FCP Huawei, SGSP Spreadtrum, AFC Samsung, MTK.PE Meizu, Qualcomm, Music and other agreements)