1. Why This Matters
👉 Many batteries look the same — but quality varies massively
2. Key Factors That Define Quality
1. Battery Cells
- Grade A cells
- Consistent performance
2. BMS System
- Smart protection
- Communication support
3. Build Quality
- Strong casing
- Good thermal design
3. Certifications (Must-Have)
- UN38.3
- CE
- IEC
👉 No certification = high risk
4. Manufacturer vs Trading Company
👉 Choose manufacturers with:
- Production lines
- Engineering team
- Project experience
5. Red Flags
- Price too low
- No test data
- No real factory
- No after-sales support
6. Final Buying Strategy
👉 Don’t buy cheapest
👉 Buy most reliable + best support