Li-Ion battery pack 4S1P 14.4 V 3.4 Ah 48.96 Wh

Li-Ion battery pack 18650 4S1P 14.4 V 3.4 Ah 48.96 Wh
Technical Data – Li-Ion Battery 4S1P (18650)

• Series (4S): 4 cells in series → cell voltages are added
  • Nominal voltage per cell: 3.6–3.7 V
  • Total nominal voltage: 3.6–3.7 V × 4 = 14.4 V
• Parallel (1P): 1 cell in parallel → capacity stays the same
  • Capacity: 3400 mAh (3.4 Ah)

• 14.4 V × 3.4 Ah = 48.96 Wh

• Samsung INR18650-35E (18 mm × 65 mm)

• 74.5 × 71.5 × 19.5 mm

Protection & Safety

• Built-in BMS (Battery Management System) with max 4 A
• Protection functions:
  • Overcharge
  • Overdischarge
  • Short circuit
• Connector: Cable with open ends

Certifications & Compliance

• UN 38.3 – transport safety
• CE compliant
• Meets EU battery directive
• RoHS compliant

Explanation of Key Terms

1. 4S1P: “4 Series, 1 Parallel” → voltage is added, capacity stays the same as a single cell.
2. BMS (Battery Management System): Monitors state of charge (SOC), current, and voltage; protects against overcurrent, overdischarge, and short circuit.
3. Nominal Voltage: Average operating voltage of a cell or pack; for Li-Ion, ~3.6–3.7 V per cell.
4. Capacity (mAh / Ah): Amount of energy the battery can store. 3400 mAh = 3.4 Ah = 3.4 A for 1 hour.
5. Wh (Watt-hours): Measure of energy content: voltage × capacity → here 14.4 V × 3.4 Ah = 48.96 Wh.