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Custom 12V 10Ah LiFePO4 pack (solar/UPS small systems)​ We tested this 12V 10Ah LiFePO4 sample for our small off-grid solar projects—and it worked perfectly!  The capacity hit exactly whats on the spec sheet, and when we ran it at 0.5C, the voltage drop was barely noticeable.  The BMS also did a great job balancing the cells, no issues at all.  Plus, the mechanical finish looks neat, the M5 terminals are easy to connect, and even the QC paperwork was well-organized.  It's definitely our top pick for small solar kits or UPS systems now. Delivery： exellent and fast; Quality： Reliable, large capacity, strong power; Design： beautiful Service： good;