BMS 1S 20A 18650 Lithium Battery Protection Board

The 18650 BMS (Battery Management System) – 1S – 20A is designed to protect and manage a single-cell (1S) 18650 lithium-ion battery. It ensures safe operation by providing overcharge, over-discharge, short circuit, and overcurrent protection.

Features:

• Overcharge Protection – Prevents battery damage from overcharging.
• Over-discharge Protection – Avoids deep discharge, which can shorten battery life.
• Overcurrent & Short Circuit Protection – Ensures safety by disconnecting the battery in case of a short.
• Balanced Charging – Some versions may include passive balancing for even charge distribution.

Specifications:

• Cell Configuration: 1S (Single Cell)
• Operating Voltage: 3.7V (Nominal) / 4.2V (Fully Charged)
• Discharge Current: Up to 20A
• Charge Current: Typically 5A – 10A
• Overcharge Protection: ~4.2V ± 0.05V
• Over-discharge Protection: ~2.5V ± 0.1V
• Short Circuit Protection: Yes
• Overcurrent Protection: Yes
• Self-consumption: <10µA
• PCB Size: Compact (varies by design)

Package Includes: 

1 x BMS 1S 20A 18650 Lithium Battery Protection Board