UPGRADED BALANCER
Our Seplos V4 Kits now come with an upgraded JK Active Balancer
The SEPLOS V4 DIY battery bundle with Rept 280Ah Cells, is a complete solution for building your own 48V solar battery system.
This bundle includes;
- A SEPLOS V4 Kit
- A SEPLOS V3 BMS
- x16 280Ah Grade A Rept Cells
Key Features:
- Modular Design: Expand your battery capacity effortlessly by connecting up to 16 additional packs in parallel.
- Smart BMS: The included V3 SEPLOS BMS (with Bluetooth) seamlessly integrates with various inverters (Victron, Growatt, Sofar, Solis, etc.) via CAN & RS485.
- Intuitive User Interface: Easily monitor battery status, charge/discharge rates, and system performance via the LCD colour screen.
- 250A DC Breaker: Provides reliable protection and safeguards your battery system from excessive currents and short circuits.
- Active Balancing: The JK Active Balancer provides optimised cell performance and ensures balanced charging and discharging among individual cells.
- 280Ah Rept Cells: An superb lifespan of up to 8,000 cycles, an impressive 280Ah capacity and flexible charging and discharging rates (0.5C charging and 1C discharging).
- Type B Busbars: Each kit includes the correct busbar set for your chosen version, ensuring optimal conductivity, precise fitment, and dependable long term performance.
Grade A Rept 280Ah Technical Specifications:
- Manufacturer: Rept
- Model: 280Ah
- Size: 174.0mm x 71.7mm x 206.9mm
- Capacity: 280Ah
- Weight: 5.5Kg
- Maximum Discharge: 1C (280A)
- Continuous Discharge: 0.5C (140A)
- Nominal Voltage: 3.2V
- Cycle Life : 8,000 cycles
- Protection: None
Type A busbars are designed for cells with flat, low-profile terminals, while Type B busbars are intended for cells with raised screw-stud terminals. Each style matches the physical terminal shape it’s designed for, ensuring the busbars seat correctly and make proper contact during assembly.
➡️ Download Cell Specification Sheet
➡️ Download Seplos User Manual
➡️ Download JK Active Balancer Instructions
Your Cells Require Top-Balancing
Top balancing makes sure all your battery cells are at the same voltage before you build your pack. This helps them discharge evenly and prevents your battery from shutting down too soon.
How to Top Balance
- Connect the Cells in Parallel – Link all cells positive to positive, negative to negative to equalise their voltage.
- Charge Slowly to 3.65V – Use a constant voltage power supply with a low current (≤10A).
- Hold at 3.65V Until Current Drops Below 1A – Keep charging until the current naturally drops. This means all cells are fully charged and balanced.
- Disconnect and Assemble Your Pack – Once balanced, disconnect the cells and build your battery. Avoid long-term storage at full charge.