Ambrane 20000mAh Powerbank with in-Build Type C Cable, 22.5W Fast Charging, USB & Type C Output, Power Delivery, Quick Charge for iPhone, Android Mobile & Tablets, Earbuds, (Stylo N20, Purple)

Best power bank in this range It charged my phone almost 5 times 👍

Good powerbank. Supports fast charging for almost all phones. But, battery is not as 20000 mAh as mentioned. I was able to charge my phone only 3 times and it runs out of battery.

Actually, my power bank has stopped working and i claim my warranty. The customer service and also product replaced within 3 weeks. Supportive customer service and friendly too.

Ambrane 20,000 mAh Power Bank — 1.25 Year Long-Term Failure Analysis (Engineering Review) I purchased this 20,000 mAh power bank and used it for around 1.25 years. After long-term usage, the battery pack started swelling and the enclosure expanded like a pillow. From a battery engineering perspective, this indicates internal cell degradation. Lithium-ion pouch cells generate gas when there is electrolyte breakdown, over-stress, poor thermal control, ageing, or inferior cell quality. A proper design should control this using quality cells, accurate charging algorithms, thermal management, and a reliable BMS. A power bank is not just a plastic box with a capacity label. The real product is: - Battery cell chemistry and supplier quality - Cell matching and balancing - Protection MOSFETs - Charging/discharging controller - Temperature sensing - PCB layout quality - Heat dissipation design Many low-cost consumer electronics use an import + branding model, where the external brand name does not reveal the actual quality level of the internal components. A sticker/label alone does not prove strong manufacturing capability. My 1.25-year experience shows that the long-term durability is poor. A premium battery product should maintain structural stability and safe operation over thousands of charge cycles. High mAh numbers and attractive branding cannot replace proper battery cell selection and safety engineering. Always evaluate the internal technology, not only the sticker on the outside.

Fast charging

This is a very good product I like it very much

The product is solid and heavy. The packaging was also nice and premium. It doesn't support fast charging with phone cable. But with the cable it provides, it did says fast charging when connected. The cable is too short. The battery light can be made slightly bigger.

A great product with impressive quality. Affordable, reliable, and definitely worth buying. 👍