7S 20A TDT Li-ion Battery Management System (BMS)

Overview:
The 7S 20A TDT Li-ion BMS is designed for managing and protecting 7-series lithium-ion battery packs with a continuous discharge current rating of 20 amps. It ensures safe charging, discharging, and cell balancing to maximize battery life and safety.

Key Specifications:

• Battery Configuration: 7 cells in series (7S)

• Nominal Voltage: Approximately 25.9 V (3.7 V per cell × 7)

• Maximum Charge Voltage: 29.4 V (4.2 V per cell max)

• Discharge Cutoff Voltage: 2.8 V per cell (over-discharge protection)

• Continuous Discharge Current: 20 A

• Peak/Overcurrent Protection: Typically triggers at 30–40 A

• Short Circuit Protection: Instant shutdown in microseconds

• Cell Balancing: Passive balancing with around 30–80 mA per cell

• Quiescent (Idle) Current: Very low, in microampere range

• Operating Temperature Range: -20°C to +60/65°C

• Physical Dimensions: Model dependent, typically compact

• Protection Features: Overcharge, over-discharge, overcurrent, short circuit, cell balancing, optional temperature monitoring

Additional Features:

• TDT Series: May include enhanced thermal dissipation technology for better heat management during high current operation.

• Selectable Settings: Some parameters can be adjusted depending on specific model features.

• Chemistry Compatibility: Optimized for Lithium-ion (Li-ion) and NMC battery chemistries.

• Port Configuration: Available with single or multiple ports for charging and discharging depending on model.

Applications:
Ideal for electric vehicles, e-bikes, power tools, solar storage, and other devices requiring reliable 7S Li-ion battery management at 20A continuous current.