The HeltecBMS 4A Smart Active Balancer is a high-efficiency battery equalization solution designed for 10S-24S LiFePO4, Li-Ion, and LTO battery packs. Utilizing a patented flying capacitor method and advanced energy transfer algorithms, this balancer ensures precise and rapid balancing, maximizing battery lifespan and performance.

Key Features

• Supports 10S-24S battery packs with fully compatible NCM, LFP, and LTO chemistries.
• Utilizes a patented flying capacitor balance architecture for efficient energy transfer.
• APP-configurable balance current from 1A to 4A with constant current and constant voltage technology.
• High-precision voltage measurement with an accuracy of ±1mV, calibrated by Keithley DMM7510.
• Undervoltage protection with sleep mode settings customizable via the APP.
• Drop detection support for enhanced safety and reliability.
• No external power supply required—balances cells using the internal energy of the battery pack.

Technical Specifications:

• Model: Smart Active Balancer 0821A24
• Applicable Battery Type: NCM, LFP, LTO
• Operating Voltage Range: 1.0V - 4.5V per cell
• Balance Current: 1A - 4A (APP adjustable)
• Static Working Current: Balance Off: 10mA, Balance On: 25mA
• Product Size: 140mm × 128mm × 22mm
• Weight (Including Packaging): 470g
• Working Temperature: -20°C to 55°C