You are buying ten (10) new Panasonic CGR18650CG 2250mAh battery cells.

Panasonic CGR18650CG specifications:
Nominal voltage:  3.70V
Maximum charge voltage:  4.20V
Minimum discharge voltage (cutoff): 3.00V
Continuous discharge rate:  1C (2.25A)
Burst discharge rate (60 secs max):  2C (4.500A)
Maximum charge rate:  0.5C (1.125A)

Using these battery cells within the above specifications will ensure a long battery life, hundreds of cycles.
Thanks for looking.