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€59
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€30 with coupon for Baseus magsafe Power Bank 6000mAh from ALIEXPRESS
Baseus magsafe Power Bank 6000mAh 20W Wireless Phone Charger External Battery Fast Charging For iPhone 14 13 12 Series Poverbank
Inside the power bank, the original 3.85V will be boosted to 5V before
output.
So the output capacity is 7400mAh ( 3.85V*6000mAh/5V=4620mAh).
There will be energy loss in the step-up and step-down process, and the
energy conversion rate: more than 75%.