Anker PowerCore Portable Chargers: 10000mAh Ultra Slim | 20000mAh QC 3.0 | 15600mAh from $25.99 + FS

AnkerDirect via Amazon has Portable Chargers listed below
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Anker PowerCore II Slim 10000 Power Bank Supports Qualcomm Quick Charge 3.0 – $25.99 (28% off), Price Drop
Anker PowerCore Speed 20000 Power Bank with Qualcomm Quick Charge 3.0 – $41.99 (30% off), Price Drop
Anker PowerCore Portable Charger 15600mAh with 4.8A Output – $27.19 (32% off), Price Drop