Liitokala 12 V 10ah Protection Large capacity 18650 lithium Rechargeable battery 12.6v 10000 mAh LED light batteries - AliExpress
New Original 18650 battery 3.7V 3500mAh 20A 18650 Rechargeable battery high-current For Flashlight batteries for18650 Battery - AliExpress
Liitokala 2pcs new Original HE4 LGDBHE41865 18650 battery 3.7V 2500mAh HE4 Lithium Power Battery for Electronic products - Price history & Review | AliExpress Seller - LiitokalaVariCore Direct sales Store | Alitools.io
I need backup batteries for my vape, and thought I'd save some money on AliExpress. My vape's original battery is 2800mah but many of these on AE claim they're up to 19000mah.