Emmerich 18650V1, ULF Non-standard battery (rechargeable) 18650 U solder tab Li-ion 3.7 V 1500 mAh | Conrad.com
Amazon.com: KNOXS Battery Rechargeable 3.7V 18650 2600mAh Rechargeable Lithium Ion Battery with Solder Tab for Portable Wireless Remote Control 6 Pcs : Health & Household