This 7S 20A lithium battery protection board is designed for 7-cell series 18650 Li-ion battery packs and other compatible lithium battery configurations. It uses a common port design, allowing charging and discharging through the same negative terminal for simpler wiring and integration.

Key Features:

• Supports 7S lithium battery packs
• Common port charging and discharging design
• Maximum continuous current up to 20A
• Integrated cell balancing function
• Overcharge protection
• Over-discharge protection
• Overcurrent protection
• Short-circuit protection
• Aluminum heat dissipation plate
• Includes balance connector cable set
• Compatible with 18650 lithium-ion cells

Technical Specifications:

• Battery Configuration: 7S (7 Cells in Series)
• Compatible Battery Type: Lithium-ion / 18650
• Nominal Voltage: 25.2V
• Full Charge Voltage: 29.4V
• Maximum Continuous Current: 20A
• Port Type: Common Port
• Protection Functions: Overcharge, Over-discharge, Overcurrent, Short Circuit, Balancing
• Cooling: Aluminum heat dissipation plate
• Connection Type: Balance connector with wiring harness
• Application: Lithium battery pack protection and management

Wiring Note:

• B- connects to the battery pack negative terminal.
• C- connects to the negative terminal for both charging and discharging.
• P- is usually left unconnected on this specific model according to the product label.