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LISEN Direct via Amazon [amazon.com] has 6800mAh 22.5W Lisen USB-C Mini Capsule Portable Charger (Grey) on sale for $26.99 – $11.00 off when you apply promo code N8ZO1ZT9 at checkout = $15.99. Shipping is free w/ Prime or on orders $35+.

Note: Amazon promo codes don’t always apply seamlessly. If you run into this issue, try refreshing the page, re-entering the code, or checking after you select a payment method to confirm whether it already applied.