4S BBU

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• 4S 21.28Wh Li-ion battery (15.2V 1400mAh)
• 4S Impedance Track Gauge
• 4S 2nd protection IC
• 4S Level II smart charger
• Buck DC to DC 12V / 8.1A 5V / 1.4A 3.3V /0.3A
• BBU control logic
• Applications in Cloud Computing Storage system