Featuring high-density 18650 3400mAh cells in a 3S1P layout, this 3.4Ah pack offers up to 8.5A continuous discharge for burst loads. A secondary protection circuit guards against over-voltage, under-voltage, and thermal runaway, meeting UL 2054 requirements. Encased in a slim blue PVC sleeve (20.5 × 114 × 73 mm), it fits tight spaces; exposed 127 mm 18 AWG leads simplify PCB integration. Ideal for compact robotics, portable scanners, or wireless communication units where both size and reliability matter.