Quick Answer
Lithium battery systems for solar storage are sourced from China primarily in LiFePO4 chemistry, from residential 5kWh units to MW-scale BESS. Key checks are cell quality, the battery management system (BMS), certifications (IEC 62619, UN38.3 for transport), and factory QC. Battery quality and safety documentation are critical.
What to Verify on Battery Systems
- LiFePO4 vs. NMC chemistry suited to the application
- Cell grade and the battery management system (BMS)
- IEC 62619 safety and UN38.3 transport certification
- Capacity, cycle life, warranty, and factory QC
Batteries are dangerous goods for shipping (UN38.3) and safety-critical. Verify certification and inspect. See battery safety & shipping.
Key Takeaways
- LiFePO4 is the common solar storage chemistry.
- Verify IEC 62619 and UN38.3 certification.
- Check cell grade, BMS, capacity, and cycle life.
- Batteries are dangerous goods to ship.
Frequently Asked Questions
What battery chemistry is best for solar storage?
LiFePO4 (lithium iron phosphate) is the most common for solar storage due to safety, cycle life, and stability. NMC is used where energy density matters more. Match chemistry to the application.
What certifications do lithium batteries need?
IEC 62619 for safety and UN38.3 for transport are key, plus CE where applicable. Verify certifications cover the specific battery, and confirm UN38.3 for dangerous-goods shipping.
Why does the BMS matter?
The battery management system controls charging, balancing, and protection. A quality BMS is essential for safety, performance, and lifespan of a lithium battery system.
Are lithium batteries hard to ship from China?
They are dangerous goods requiring UN38.3 documentation, certified packaging, and DG declarations. With correct documentation, they ship routinely; without it, they are rejected.
Can Plutonia source lithium battery systems?
Yes. Plutonia sources LiFePO4 and lithium battery systems from verified manufacturers with certification checks, QC, and compliant DG shipping. Submit your requirement to start.