https://alexnld.com/product/2pcs-shockli-imr-26650-3-7v-5250mah-20a-discharge-rechargeable-li-ion-battery-flat-top/?hilite="2Pcs Original MOLICEL 21700 4200mah 45A P42A 3.7v Li-ion Battery Rechargeable Cell Flat Top Unprotected High Drain Lithium Batteries for Flashlight E-bike RC Toys Home Tools"