Heltec 2-32S 4A-25A Battery Balancer Equalizer for LiFePO4/Li-ion EV Car Golf Cart Battery Pack Repair Tool Balance Regulator

HTB-J32S25A not applicable to nickel-metal-hydride battery!!!

HTB-J24S10AC/

HTB-J24S15AC/HTB-J32S25A

Charge Balance need a power

24S need 120V power

32S need 135V power

Discharge Equalizer

Technical Index

2 - 24S 3/4A Intelligent Battery Equalization Instrument

2 - 24S 1 - 7A Intelligent Battery Equalization Instrument

Model SKU

HTB - J24S04A

HTB - J24S07A

Picture

Applicable Battery Strings

2 - 24S

2 - 24S

Support battery type

NCM/LFP/LTO/Nominal voltage between 2V and 4.5V

NCM/LFP/LTO/Nominal voltage between 2V and 4.5V

Maximum / Minimum Measuring Voltage

4.5V/2V

4.5V/2V

Max Balancing Current

3A for lifepo4 / 4A for ternary

7A

Balancing Type

Discharge balancing

Discharge balancing

Single string input interface withstand voltage

- 100V～+ 100V

- 100V～+ 100V

external power supply

12V 5A

12V 5A

HTB-J32S25A

Feture

Rated voltage: DC12V

Repair range: 2-32S

Balance current: 15A 20A 25A

Size:360*290*170MM

This device cannot be used for Honda/Toyota hybrid batteries.

Balance setting

1. Manual Equalization

How it works: Manually set a target voltage (must be within the battery’s valid range), then click "Manual Balance" while the device is operating normally. The system will discharge higher-voltage cells until all cells match the set value.

2. Automatic Equalization

Best for: Low-speed vehicles and small-capacity battery packs.

Power: 5%–30% of total capacity.

How it works: Click "Automatic Equalization" during normal operation. The system detects the highest and lowest voltage cells, then discharges the high-voltage cells to match the low-voltage ones.

3. Charge Equalization

Performed when the battery is at half-charge to balance cell voltages.

Connection Setup

Connect the battery pack’s negative terminal to the device’s "Battery Negative" port.

Connect the charger’s negative to the device’s "Charging Negative" port.

Connect the charger’s positive directly to the battery’s positive terminal.

Current Limits:

Before balancing starts: ≤25A

After reaching balance voltage (LiFePO4: 3.45V / NMC: 4.00V): ≤5A (lower current improves balance quality).

Parameter Settings

A. LiFePO4 (Lithium Iron Phosphate) Batteries

Overvoltage Protection: 3.650V

Overvoltage Recovery: 3.650V

Forced Equalization Voltage: 3.650V

Balance Start Voltage: Matches the lowest cell voltage

Voltage Difference Trigger: 0.005V

Balance Current Ratio: 5%–100%

B. NMC (Ternary Lithium) Batteries

Overvoltage Protection: 4.250V

Overvoltage Recovery: 4.200V

Forced Equalization Voltage: 4.250V

Balance Start Voltage: 4.000V

Voltage Difference Trigger: 0.005V

Balance Current Ratio: 5%–100%

Battery Equalization Guide

1. Activation Conditions

Equalization starts only when at least one cell reaches the set voltage during charging

Below set voltage → No equalization

Optimal charging current during equalization: ≤5A

2. Balancing Process

Automatically balances cells until voltage differences reach target range

Stops automatically when balanced

3. Overvoltage Protection

Any cell ≥ set limit → Charging stops immediately

4. Recovery Mechanism

Charging resumes automatically when high cells drop below recovery value

5. Manual Forced Balancing

Set target voltage in settings

Click "Manual Balance" to force discharge

⚠️ Must stay within safe voltage range

6. Current Settings

Battery clips: 5-100%

Adapter boards: 5-50%

⚠️ Exceeding limits may damage equipment

Key Reminders

• Match settings to battery type (LiFePO4/NMC)

• Monitor currents during balancing

• Never exceed safe voltage ranges

HTB-J24S04A/07A

Feature

Power supply: DC12V 4A

Single channel voltage measurement range: 1-5V

Single channel voltage display accuracy: 0.001V

Single channel voltage acquisition accuracy :±(0.05%+0.003v)

Single channel voltage operating range: 2.0-4.5V

Adjustable balance current: 1A-4A/1A-7A(The smaller the voltage, the larger the impedance, the smaller the balance current)

Applicable battery type: ternary lithium, lithium iron phosphate and other battery voltage between 2.0v-4.5v

Operating temperature: 0°C-50°C

Working humidity: 20%-80%RH

Working environment: no corrosion, explosive and damage insulation gas and conductive dust

Technical Index

2 - 24S 3/4A Intelligent Battery Equalization Instrument

2 - 24S 1 - 7A Intelligent Battery Equalization Instrument

Model SKU

HTB - J24S04A

HTB - J24S07A

Picture

Applicable Battery Strings

2 - 24S

2 - 24S

Support battery type

NCM/LFP/LTO/Nominal voltage between 2V and 4.5V

NCM/LFP/LTO/Nominal voltage between 2V and 4.5V

Maximum / Minimum Measuring Voltage

4.5V/2V

4.5V/2V

Max Balancing Current

3A for lifepo4 / 4A for ternary

7A

Balancing Type

Discharge balancing

Discharge balancing

Single string input interface withstand voltage

- 100V～+ 100V

- 100V～+ 100V

external power supply

12V 5A

12V 5A

Heltec HTB-J24S10AC/HTB-J24S15AC Lithium Battery Balancer

Works with 2-24 Battery Strings

Suitable for Li-ion, LiFePO4, and LTO batteries.

Helps balance voltage differences between battery cells to extend battery life.

Two Balancing Modes

Continuous Discharge (10-15A)

Fast mode for large voltage differences.

Uses 280mΩ resistance (15A model) to quickly discharge high-voltage cells.

Saves 40% more time than pulse mode for initial balancing.

Pulse Discharge

Slow mode for precise balancing.

Uses small on-off current pulses for high accuracy (±1mV).

Best for final tuning when voltages are close.

How to Use

1. Start with continuous mode to quickly even out big voltage gaps.

2.Switch to pulse mode when voltages get close ( 0.5V above the lowest cell).

3.The 5-inch touchscreen shows real-time voltage data.

Key Features

Max 15A balancing current (adjustable).

Works with AC 110-220V power.

Built-in fans for cooling—keep in a ventilated area.

Safety protections: over-voltage, over-current, over-heat.

HTB-J24S10AC

Model: HTB-J24S10AC

Battery Compatibility: Li-ion / LiFePO4 / LTO

String Range (Discharge Mode): 2-24S

String Range (Charge Mode): 10-24S

Max Equalization Current: 10A

Voltage Balance Accuracy: ±0.001V

Equalization Modes: Charge / Discharge

Discharge Modes: Pulse / Continuous

Minimum Capacity: 50Ah+

Charger Included: No

WIFI/APP Support: No

HTB-J24S15AC

Model: HTB-J24S15AC

Battery Compatibility: Li-ion / LiFePO4 / LTO

String Range (Discharge Mode): 2-24S

String Range (Charge Mode): 10-24S

Max Equalization Current: 15A

Voltage Balance Accuracy: ±0.001V

Equalization Modes: Charge / Discharge

Discharge Modes: Pulse / Continuous

Minimum Capacity: 100Ah+

Charger Included: No

WIFI/APP Support: No

HT-CJ32S25A

HT-CJ32S25A

Core Selling Points

✅ New Energy Vehicle Battery Specialist, Perfectly Matches Multi-Scenario Battery Packs

✅ 25A High Current Equalization, Faster Than So-Called 42A Products on the Market

✅ ±0.001V Ultra-High Precision, Realize Zero-Interference Accurate Measurement

✅ 2-in-1 Multifunction: 0~20A Charging + 1.2~25A Discharging

✅ Patented 0~45° Swing Control Panel, Flexible Operation for Standing or Sitting Posture

✅ Intelligent Charging Parameter Display, Real-Time Mastery of Battery Status

📌Product Introduction

HELTEC ENERGY Lithium Battery Equalizer & Analyzer is a professional-grade battery maintenance tool, specially designed for new energy vehicles, hybrid cars, electric bicycles and electric motorcycle battery packs.

It integrates battery equalization, charging, discharging, activation and internal resistance testing in one device, effectively solving the problem of voltage inconsistency of battery packs, improving battery utilization rate and extending battery service life significantly. Whether you are a professional maintenance technician or a battery pack enthusiast, this tool can meet all your high-standard battery maintenance needs.

💪 15 Core Advantages

1.BTV-TOP 32-Channel Precision Detection

Equipped with advanced 32-channel detection technology, it supports zero-interference high-current equalization, with ±0.001V balance accuracy leading the industry, ensuring every section of battery is in the best state.

2.Patented Swing-Angle Control Interface

7-inch full-color high-definition touch screen combined with independent physical keyboard, the panel can be adjusted freely within 0~45°, which is friendly to both standing and sitting operation, making operation more convenient and efficient.

3.25A Adjustable High Current

Supports 1.2A~25A adjustable equalization current, with pulse and continuous dual working modes. The 25A continuous equalization speed is equivalent to the so-called 42A peak current of other brands, greatly shortening the equalization time.

4.50A High-Current Gold-Plated Connector

Adopts self-developed 24K gold-plated 50A high-current connector, which has excellent conductivity, no heating and no spark during use, ensuring safe and stable operation even in high-power working conditions. The insulated rubber handle and rear plug-in structure make connection safer and more reliable.

5.Intelligent Safety Protection System

Built-in multiple safety protection functions, including reverse connection protection and wrong wiring alarm. The independent physical one-touch emergency stop button responds faster than touch-screen stop functions, avoiding equipment and battery damage caused by misoperation.

6.Multi-Function Integration

Integrates charging, discharging, equalization and internal resistance testing functions. It can realize 0~20A adjustable charging and maximum 25A discharging, and the intelligent pulse activation function can effectively revive aged batteries, bringing unexpected effects to battery maintenance.

7.Intelligent Charging Parameter Display

The device supports real-time display of battery charging status:

Battery string setting: Automatically match charging voltage by setting the number of battery strings and battery type

Real-time data: Display charging voltage, charging current, charge capacity and charging time

Adjustable current: 0~20A charging current range, flexible to meet different needs

🎯 Application Scenarios

New Energy Electric Vehicle Battery Packs

Hybrid Car Battery Packs

Electric Bicycle/Motorcycle/Tricycle Battery Packs

Industrial and Commercial Large-Capacity Lithium Battery Packs

🛠 Product Details

Control Panel: 7-inch full-color touch screen + independent physical keyboard, with one-touch emergency stop function, simple and convenient operation

Connector: 24K gold-plated 50A high-current connector, self-developed design, safe and durable, no heating and no spark

Cooling System: Professional optimized heat dissipation structure, with efficient heat dissipation performance, ensuring stable operation during long-time high-load work

Cable: New energy vehicle-grade silicone 5-core thickened copper cable, with good flexibility, high temperature resistance and wear resistance, suitable for various complex working environments

📊 Product Parameters

Product Name: New energy vehicle lithium battery module equalization repair analyzer

Product Model: HT-CJ32S25A

Equalization Strings: 2-32 strings

AC Input: 220V

Differential Pressure Equalization: 0.001~9.999V (Adjustable)

Equalization Model: Pulse discharge equalization, continuous discharge equalization

Discharge Equalization: 2-32 series battery pack

Charge Equalization: 1-32 series battery pack

Charging Current: 0~20A

Max. Equalization Current: 25A (Pulse frequency adjustable)

Current Measurement: Support 0-20A charging current + 1.2-25A discharging current measurement