Refurbishing

After collecting the used batteries, we document each one and assign a unique identification number for better traceability.

Since the batteries often contain hazardous materials, the packs are opened in controlled, de-energized environments with fire and electrostatic protection.

We test each module and cell for capacity, SoH (State of Health), and voltage. The process involves:

• Visual and electrical inspection to identify damage or leakage
• OCV and IR testing to check voltage and internal resistance
• Analysing capacity and SoH with advanced EIS diagnostics when required

The data is then stored digitally for traceability.

We then categorize the cells as A, B, or C grade based on test results.

• Grade A: Over 85% SoH, suitable for premium ESS applications can perform up to 12–24 months
• Grade B: 70–85% SoH for stationary and moderate-duty systems offer high performance up to
• Grade C: Below 70% SoH sent directly for material recycling.

Cells with similar performance characteristics are grouped together to ensure stable operation.

New packs are assembled using tested cells and fitted with advanced Battery Management Systems for protection and performance monitoring. They are perfect for those looking for refurbished inverter battery solutions.

We perform controlled charge–discharge cycles for completed packs to validate real-world performance and thermal stability.

At NavPrakriti, our refurbished batteries are certified under UN 38.3 for transport safety, supported by MSDS and COA documentation before delivery. We are also progressing toward ISO 9001, ISO 14001, ISO 45001, and R2v3 certifications to ensure our products meet global standards for quality, environmental responsibility, and worker safety.