Amazon.com: 2 Pcs 3.7V Rechargeable Batteries 1/2AA Lithium ion Battery icr14250 300mAh (Flat Top, 14.5 * 25mm, NOT AA or AAA) : Health & Household
18650 Battery Case Holder, 10 Pcs 1 Slots x 3.7V DIY Battery Storage Box, in Parallel Black Plastic Batteries Case with Pin for 1 x 18650, by Ltvystore
18650 Battery Charger 2 Bay Fast Charger, for Rechargeable Batteries 3.7V Li-ion 18650,26650 Battery, Comes with 4X Flat Head Rechargeable Battery Chargers and Super Bright Flashlight
Amazon.com: 18650 Battery
Amazon.com: 18650 Battery Charger,Single-Slot Intelligent Battery Charger for 3.7V Li-ion 18650,26650,21700,18500,18350,16650 Rechargeable Battery (not Including Battery : Electronics
18650 Battery Charger 4 Bay Fast Charger for Rechargeable Batteries 3.7V Li-ion 10440,14500,16340,16650,14650,18350,18500,18650 Battery, USB Intelligent Universal
Amazon.com: ICR17500 Battery 3.7V 1100mah A Size Lithium Rechargeable Batteries with Flat Top 2pcs(They are not 1865mm Size Battery) : Health & Household