24V MB56 16kWh DIY Battery Box

This 24V 628Ah 16kWh DIY battery enclosure is designed for building a high-capacity 25.6V LiFePO4 battery system using eight 628Ah cells connected in series. Equipped with a JK B2A8S30P BMS, 2A active balancing, flexible copper busbars, this DIY battery box provides intelligent battery management, high-current protection, and convenient power connectivity for RVs, off-grid cabins, backup power systems, and other 24V energy storage applications.

Features

JK B2A8S30P BMS with 2A Active Balancing

The built-in JK B2A8S30P BMS provides intelligent monitoring and protection for the 8S LiFePO4 battery pack. Its 2A active balancing function continuously transfers energy from higher-voltage cells to lower-voltage cells, helping maintain cell voltage consistency and improve overall battery performance.

The BMS supports Bluetooth connectivity, allowing you to monitor key battery parameters through the mobile app, including cell voltage, pack voltage, current, temperature, state of charge, and other operating data.

With support for up to 300A continuous discharge current, the system can deliver approximately 7.6kW of continuous power at 25.6V, making it suitable for demanding 24V applications.

98 × 30 × 2 mm Flexible Copper Busbars

The enclosure uses 98 × 30 × 2 mm flexible copper busbars to provide a reliable high-current connection between the MB56 cells.

The flexible design helps reduce mechanical stress on the cell terminals compared with rigid busbars, while the laminated copper construction provides a low-resistance current path and helps manage heat during high-current operation.

These busbars are designed to support high-current applications up to 300A, making them suitable for high-power 24V battery systems.

50A Anderson Charging Connector

The enclosure includes a 50A Anderson-style charging connector for convenient connection to compatible chargers and charging equipment.

Its high-current design provides a secure and practical connection for charging the 24V battery system, making it suitable for RV, off-grid, and mobile energy storage applications.

Cigarette Lighter & PD-QC3.0 Output Ports

For convenient DC power access, the enclosure includes a 12V cigarette lighter socket and a PD-QC3.0 USB output port.

The cigarette lighter socket can be used to power compatible 12V accessories and equipment, while the PD-QC3.0 port provides convenient USB power for compatible electronic devices such as phones, tablets, and other portable equipment.

Designed for 8 × 628Ah LiFePO4 Cells

This enclosure is designed specifically for eight 628Ah LiFePO4 prismatic cells connected in series (8S), creating a nominal 25.6V battery system with approximately 16kWh of energy storage capacity.

The large capacity makes this DIY battery enclosure well suited for applications that require substantial energy storage in a 24V-class system, including RVs, off-grid cabins, backup power, and solar energy storage.

Parts Listing

• Empty Box x 1
• Pos & Neg Terminals x 1
• JK B2A8S30P BMS with 3.2 inch Display x 1
• Epoxy Plate # 1 x 9
• Epoxy Plate # 2 x 2
• Epoxy Plate # 3 x 1
• Flexible Busbar x 7
• Silicone Wire x 3
• Anderson Connector x 1
• Cigarette Lighter & PD-QC 3.0 x 1
• Handle x 4
• Insulation Cotton # 1 x 4
• Insulation Cotton # 2 x 1
• Screws

Applications

• RV
• Off-grid Tiny House
  

Notes:

• Since this DIY box does not conform to BCI group sizing standards, please ensure there is sufficient space for the battery when using it.
• This DIY box is intended for use with a single battery unit; it is not designed for stacking.