1. Products exceed the warranty period without purchasing a warranty extension;
2. Damage caused by human abuse, including but not limited to cover deformation, collision caused by impact, drop, and puncture;
3. Dismantle the battery without NACCI's authorization;
4. Failure to work or being torn down in a harsh environment with high temperature, humidity, dust, corrosives and explosives, etc;
5. Damage caused by short circuit;
6. Damage caused by an unqualified charger that is not compliant with the product manual;
7. Damage caused by force majeure, such as fire, earthquake, flood, hurricane, etc;
8. Damage caused by improper installation not compliant with the product manual;
9. Product without NACCI trademark / serial number.