How to choose 18650 battery
In principle, you can try any reputable brand of 18650 battery.
Provided it does not have a built-in protection circuit and its length is strictly limited to 65 mm and flat top.
All four batteries must be of the same brand, model, capacity, and condition. Never mix new and used batteries.
Risk Notice and Disclaimer
The 18650 format is a mature and widely adopted lithium-ion cell standard. Qualified cells produced by reputable manufacturers typically incorporate properly engineered safety features, manufacturing quality controls, and consistency testing. However, these measures cannot completely eliminate risks arising from product defects, incorrect cell selection, or improper use.
18650 lithium-ion cells have a high energy density. Counterfeit, unverified, incompatible, defective, damaged, or degraded cells may present serious safety hazards due to manufacturing defects, internal short circuits, inconsistent performance, or inadequate safety characteristics. Such hazards may include abnormal heating, leakage, smoke, fire, explosion, personal injury, and property damage.
Always purchase new, genuine cells from a reputable manufacturer and authorized or trustworthy supplier. Strictly follow all battery dimensions, specifications, and operating instructions provided by our company. All four cells must be identical in brand, model, specification, capacity, and condition. Never mix new and used cells, or cells of different brands, models, capacities, or conditions.
Customers are responsible for verifying the authenticity, quality, safety, and compatibility of any third-party cells they purchase, select, install, use, store, or dispose of. To the fullest extent permitted by applicable law, our company shall not be liable for overheating, smoke, fire, explosion, equipment damage, personal injury, or any other loss arising directly or indirectly from counterfeit, defective, incompatible, damaged, degraded, improperly installed, improperly used, or improperly stored third-party cells.
Nothing in this disclaimer excludes or limits any liability that cannot lawfully be excluded or limited.