Introduction
When overseas buyers source lithium batteries from China, most of them ask a similar set of questions before placing an order.
These questions are critical because lithium batteries are:
- high-value products
- safety-related systems
- long-term energy investments
Understanding what buyers care about helps suppliers build trust and helps importers avoid costly mistakes.
This article summarizes the 15 most common questions international buyers ask before purchasing LiFePO4 batteries.
Question 1: What cell brand do you use?
Buyers want to know:
- Are the cells Grade A?
- Which manufacturer produces them?
- Are cells matched before assembly?
Cell quality directly determines:
- lifespan
- stability
- safety
Question 2: What is the cycle life?
Typical LiFePO4 cycle life:
Higher-end systems may exceed this range.
Question 3: What is the warranty period?
Most ESS batteries offer:
Warranty conditions vary by manufacturer.
Question 4: Is OEM/ODM available?
Many buyers want:
- private label branding
- custom packaging
- customized BMS features
Question 5: Which inverters are compatible?
Common compatible brands include:
- Deye
- Growatt
- Victron
- GoodWe
- Solis
- LuxPower
Question 6: What certifications do you have?
Common certifications include:
- CE
- UN38.3
- MSDS
- IEC
- RoHS
Question 7: Can I get samples first?
Yes, most manufacturers provide samples for:
- testing
- compatibility verification
- performance evaluation
Question 8: What is your lead time?
Typical production time:
- 15–30 days depending on order size
Question 9: Can batteries be expanded?
Most ESS systems support:
- parallel connection
- modular expansion
Question 10: What is the actual usable capacity?
LiFePO4 batteries typically use:
usable energy range.
Question 11: Do you support communication protocols?
Yes, common protocols include:
- CAN
- RS485
Question 12: What is the shipping method?
Common options:
- sea freight
- rail freight
- air freight (limited cases)
Question 13: Can you provide technical support?
Professional manufacturers provide:
- installation guidance
- inverter configuration help
- troubleshooting support
Question 14: What is the MOQ?
MOQ varies depending on:
- product type
- customization level
Question 15: Can I visit your factory?
Yes, many manufacturers allow:
- factory audits
- video inspections
- third-party inspections
Why These Questions Matter
These questions help buyers evaluate:
- supplier reliability
- product quality
- technical capability
- long-term cooperation potential
Conclusion
Understanding these 15 key questions helps buyers make better sourcing decisions and reduces risks when importing lithium batteries from China.