The company that manufactures these batteries is YDL.
The same company also manufactures the Aspire 18650 batteries of 1800-2500mAh, as well as the 26650 of 4300mAh.
YDL is the company that deals most with Lipo batteries.
Many daily use devices have batteries of this company.
Most EGO devices used by vapers have batteries from this company.
Have shown good behavior, but of course there are those who did not see good performance ……
But most are happy with the performance of these batteries.
I managed to use the 2500mAh and unfortunately as a performance I did not see anything superior to the well-known 18650 of the big manufacturers.
At the 22A operating mode, the battery showed poor performance and increased temperature.
It was not a measurement to be able to have a clear performance picture, but compared to the Samsung SDIEM INR18650 25R5 2500mAh 20A, it was inferior.
The 18350, however, seems to be a good construction and is probably the most efficient battery of this size today.
But comparing an 18650 to an 18350, is totally invalid.
The 18350 is manufactured for smaller devices, so we will have less performance.
If it is worth buying or not, it is proportionate to each one’s needs.