13S 20A TDT Li-ion BMS 

Product Description:

The 13S 20A TDT Li-ion BMS is a compact and reliable Battery Management System designed for 48V lithium-ion battery packs (13 cells in series). This BMS provides essential safety features including overcharge, over-discharge, short-circuit, and overcurrent protection, along with passive cell balancing. It is ideal for low- to medium-power lithium battery applications such as electric bicycles, small energy storage systems, and portable power units.

Key Features:

• Designed for 13S (48V nominal) lithium-ion battery packs

• Supports 20A continuous discharge current

• Provides protection against overcharge, over-discharge, overcurrent, and short circuit

• Passive cell balancing to maintain uniform cell voltage

• Simple, compact, and cost-effective design

• Optional separate charging and discharging port configuration

• Designed for Li-ion chemistry (3.7V nominal per cell)

Technical Specifications:

• Battery Type: Lithium-ion (Li-ion)

• Series Configuration: 13S

• Nominal Voltage: 48V

• Maximum Charge Voltage: 54.6V

• Continuous Discharge Current: 20A

• Balance Current: ~30-40mA

• Overcharge Protection Voltage: ~4.25V ± 0.05V per cell

• Overdischarge Protection Voltage: ~2.7V ± 0.1V per cell

• Short Circuit Protection: Yes

• Overcurrent Protection: Yes

• Temperature Protection: No (unless specified)

• Charging Method: Constant Current/Constant Voltage (CC/CV)

Applications:

• Electric bicycles and scooters

• Small solar energy storage systems

• DIY lithium battery projects

• Portable power tools and battery packs

• Light electric vehicles and electronics