Found these 21700 cells. Anyone know anything about these. They claim to outperform the 40T.

https://www.ebay.com/itm/2x-Molicel-21700-P42A-4200mAh-45A-HIGH-DRAIN-Flat-Top-Rechargeable-Battery-Case/252366316012?\_trkparms=aid%3D555018%26algo%3DPL.SIM%26ao%3D1%26asc%3D20131003132420%26meid%3D3130ea6946354c60adccf33a2e522bef%26pid%3D100005%26rk%3D1%26rkt%3D12%26mehot%3Dsb%26sd%3D202760134644%26itm%3D252366316012%26pmt%3D1%26noa%3D0%26pg%3D2047675&\_trksid=p2047675.c100005.m1851

Molicel/NPE INR-21700 Specs:
Brand: Molicel
Model: INR-21700 P42A
Size: 21700
Positive: Flat
Type: Rechargeable Lithium Ion Battery
Protected: No
Nominal Voltage: 3.6V
Rated Capacity: 4200mAh
Minimum Capacity: 4000mAh
Maximum Discharge Rate: 45A
Approximate Dimensions: 21mm x 70mm
Approximate Weight: 70g