Description
3S 20A Lithium Battery Protection Board (BMS)
Protection board for a three-cell lithium battery pack connected in series (3S). The source describes protection against short circuit, overcharge, excessive discharge and overcurrent.
- Pack configuration: 3 cells in series; source identifies 3.6–3.7 V cells such as 18650.
- Maximum discharge current: 20 A (source rating).
- Maximum operating current: 15 A (source rating).
- Charging voltage: 12.6 V.
- Charge cutoff: 4.25–4.35 V ± 0.05 V per cell (as stated by source).
- Discharge cutoff: 2.5–3.0 V ± 0.05 V per cell (as stated by source).
- Standby current: <30 µA; internal resistance: <100 mΩ.
- Operating temperature: −40 to 50 °C; stated lifetime: >30,000 hours.
- Dimensions: 58 × 20 × 3.6 mm.
!["3S]("https://www.microplanet.ma/wp-content/uploads/2018/05/3s_branchement3.png")
Important: this board provides battery protection; it is not a standalone charger and does not replace a suitable 3S lithium CC/CV charger set for 12.6 V. Follow the wiring diagram and verify cell chemistry, polarity, current ratings and cutoff specifications before use. The source lists different maximum operating and discharge currents; treat 20 A as a source claim, not a guaranteed continuous rating.
Price: MAD 40
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