Active Balancer 2-24S Super-Capacitor 4A BT App Li-ion / LiFePO4 / LTO

The basic principle of the active equalization technology is to use the ultra-pole capacitor as a temporary energy storage medium, charge the battery with the highest voltage to the ultra-pole capacitor, and then release the energy from the ultra-pole capacitor to the battery with the lowest voltage. The cross-flow DC-DC technology ensures that the current is constant regardless of whether the battery is charged or discharged. This product can achieve min. 1mV precision while working. It takes only two energy transfer processes to complete the equalization of the battery voltage, and the equalization efficiency is not affected by the distance between the batteries, which greatly improves the equalization efficiency.

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Product Detail

Product Tags

Specifications

4S
2-16S
2-24S
10-24S

Product Information

Brand Name:	HeltecBMS
Material:	PCB board
Origin:	Mainland China
Warranty:	One year
MOQ:	1 pc
Battery Type:	All battery types such as ternary, iron lithium, lead acid, etc.
Balance type:	Super-Capacitive Balance / Active Balance

Customization

Customized logo
Customized packaging
Graphic customization

Package

1. Active balancer super-capacitor PCB board *1set.
2. Anti-static bag, bubble film and sponge case.

Purchase Details

Shipping From:
1. Company/Factory in China
2. Warehouses in United States/Poland/Russia/Brazil
Contact Us to negotiate shipping details
Payment: 100% TT is recommended
Returns & Refunds: Eligible for returns and refunds

Features

Support BT communication, configure mobile APP, view battery status in real time.
Real-time, active, energy transfer equalization.
Single voltage collection range: 1-5V.
Accuracy: ±3mV.
Power supply range: 40V-100V.
Super self-protection function: any equalization of the working line will not burn the equalizer.
Supports balanced cascading for battery packs of more than 24 strings, theoretically unlimited cascade.
Balanced line resistance detection: abnormal contact failure will be found in advance.

Package & Application

heltec-10a-active-balancer-supercapacitor

heltec-supercapacitor active-equalizer-balancer

Heltec-super-capacitor-4a-active-balancer-equalizer

heltec-supercapacitor-application-0821N24

Working Principle

1. Each time the energy is transferred, the highest compensation is taken to the lowest, which avoids invalid charge and discharge cycles and has almost no impact on battery life.

2. Cross-flow DC-DC technology ensures a constant equalization current, and will not affect the equalization ability due to the small voltage difference between the batteries.

3. It takes only two energy transfer processes to complete the equalization of the battery from high to low, and the equalization efficiency is not affected by the distance between the batteries, which greatly improves the equalization efficiency. The average efficiency is 0.95 squared to approximately 0.9.

Model Selection

Technical Index	Product Model
Model	0821N24	0821A17	0821A10
	24S 4A	17S 4A (to be mass produced )	10S 4A (to be mass produced )
Applicable String	10-24S	8-17S	4-10S
Applicable Battery Type	NCM/LFP/LTO fully compatible
Applicable Strings For Power Supply Range	The minimum total voltage of the battery pack is greater than 30V; The recommended value: ternary battery≥10S,iron-lithium battery ≥12S, LTO battery≥20S
Single Voltage Working Range	1.0-4.5V
Voltage Balance Accuracy	±1MV(voltage measurement accuracy), ±1MV(voltage equalization accuracy), (calibrated by Keithley DMM7510)
Balanced Method	Patented balance architecture flying capacitor method, combined with point-to-point energy transfer algorithm for high-efficiency balance.
Balance Current	APP custom setting:1-4A, due to the use of constant voltage technology, the balance current has nothing to do with the battery voltage difference.
Drop Detection	Support
Undervoltage Protection Sleep Voltage	Can be customized by APP:1.5V-4.2V.
Static Working Current	Balance off 10mA, balance on 25mA.
Product Size (mm)	14012822	To be determined	To be determined
Weight including package	470g	To be determined	To be determined
Working Temperature	-20℃-55℃
External Power Supply	No need for external power supply, relying on the internal energy transfer of the battery to achieve the whole group balance.