1. Product Overview

The JIABAIDA ZP16S022-T V1.0 is an 8S 30A battery management system designed for LiFePO₄ battery packs containing eight cells or parallel cell groups connected in series.

An 8S LiFePO₄ battery pack has a nominal voltage of approximately 25.6V and reaches 29.2V when fully charged. These batteries are commonly described as 24V LiFePO₄ battery packs.

The BMS monitors the individual series groups and is intended to protect the battery from unsafe charging, excessive discharge, overcurrent and short-circuit conditions. It also provides cell balancing to help reduce voltage differences between series-connected groups.

This model uses a same-port configuration, allowing charging and discharging through a common external connection. Its compact metal-covered construction makes it suitable for installation inside compatible battery packs.

2. Technical Specifications

The model number contains “16S,” but the specification printed on this particular product clearly states LiFePO₄ 3.2V, 8S, 30A. Installation and listing information should therefore follow the printed 8S specification.

3. Typical Connection Points

The exact wiring order must be confirmed from the manufacturer’s wiring diagram. Do not identify balance wires only by colour or physical position.

4. Protection and Management Functions

The JIABAIDA 8S BMS is intended to provide essential battery-management functions, including:

• Monitoring of eight series-connected cell groups
• Overcharge protection
• Over-discharge protection
• Discharge-overcurrent protection
• Short-circuit protection
• Charge and discharge control through onboard MOSFETs
• Cell balancing
• Temperature monitoring through the supplied sensor
• Recovery after supported protection events
• Same-port charging and discharging

Exact protection thresholds, balancing current, delay times and recovery behaviour are not printed on the visible label and should be confirmed from the manufacturer’s specification for this exact version.

5. Suitable Applications

This BMS may be suitable for compatible 8S LiFePO₄ battery packs used in:

• Solar and backup-energy storage
• UPS battery packs
• Portable power systems
• Electric scooters and mobility equipment
• Robotics and automated equipment
• Battery-powered instruments
• Marine and recreational battery systems
• DIY 25.6V LiFePO₄ batteries
• Battery repair and replacement projects
• Other compatible 24V-class LiFePO₄ applications

The connected equipment’s continuous and startup current must remain within the verified capabilities of the BMS, battery cells, cables and connectors.

6. Battery and Charger Compatibility

Use this BMS only when:

• The battery contains exactly eight series-connected LiFePO₄ cell groups.
• Each cell group has a nominal voltage of approximately 3.2V.
• The completed battery has a nominal voltage of approximately 25.6V.
• The charger is designed for an 8S LiFePO₄ battery.
• The charger’s maximum output voltage does not exceed 29.2V.
• All eight cell groups are at closely matched voltages before installation.
• The battery cells can safely deliver the required current.
• The load’s continuous and peak current remain within the verified system limits.
• The sensing-wire sequence matches the manufacturer’s wiring diagram.

Do not use this BMS with 8S lithium-ion or lithium-polymer cells rated at 3.6V or 3.7V nominal. Those chemistries require different charging and protection voltages.

7. Installation Guidance

• Measure the voltage of all eight cell groups before installation.
• Confirm that the cell groups are correctly connected in series.
• Identify every balance wire using the manufacturer’s wiring diagram.
• Connect B− to the battery-pack negative terminal.
• Connect the balance wires sequentially from the lowest to the highest cell-group voltage.
• Connect the final positive sensing wire or B+ as specified.
• Connect the charger and load through the designated same-port terminals.
• Position the temperature sensor where it can accurately monitor the battery or BMS temperature.
• Verify the voltage between every consecutive balance wire before plugging in the connector.
• Use cables and connectors rated for the required operating current.
• Install a correctly rated fuse close to the battery’s positive terminal.
• Insulate the PCB, terminals and all exposed conductive connections.
• Mount the BMS securely where it cannot contact busbars, nickel strips or a conductive enclosure.
• Provide suitable ventilation and heat dissipation.

Incorrect balance-wire order can permanently damage the BMS.

8. Important Current-Rating Note

The advertised 30A rating does not increase the current capability of the battery cells.

The safe current of the complete battery pack is determined by the lowest-rated component, including:

• Battery cells
• BMS
• Busbars or nickel strips
• Power cables
• Connectors
• Fuse
• Charger
• Connected load

Motors, inverters and other inductive loads may draw considerably more current during startup than during normal operation. Confirm both continuous and peak current requirements before selecting this BMS.

Operating continuously near the maximum rating may require additional heat management and should be verified under actual working conditions.

9. Safety Information

• Use only with an 8S LiFePO₄ battery pack.
• Use a compatible 29.2V maximum LiFePO₄ charger.
• Never reverse battery polarity.
• Never short the battery or BMS terminals.
• Do not connect the balance wires in the wrong sequence.
• Do not plug in the balance connector until every sensing voltage has been checked.
• Do not exceed the verified current rating of the BMS or battery cells.
• Use a suitable fuse and properly rated cables.
• Keep the BMS away from water, conductive dust and loose metal objects.
• Do not use a burnt, corroded, cracked or unusually hot BMS.
• Stop using the battery if any cell group becomes swollen, overheated or abnormally unbalanced.
• Installation should be performed by someone familiar with LiFePO₄ battery wiring and safety.