Ambrane 100W Fast Charging Powerbank for MacBook, Type C Laptop & Mobile Charging, USB-A Output 25,000mAh Battery, Triple Output, Power Delivery & Quick Charge (Powerlit Ultra, Black)

Charging very fast

I purchased this Ambrane power bank primarily to power my office laptop during travel and power outages. Initially, it worked well and delivered the expected performance. However, after about one year of normal use, the power bank completely stopped charging. It is no longer able to recharge itself, making it unusable. For a product in this price range, I expected a much longer lifespan. A laptop power bank is a long-term investment, and reliability is far more important than just fast charging or high capacity. Unfortunately, this product did not meet that expectation.

Useful and value

I'd earlier bought the lower capacity version of this powerbank (20,000 mAh/85W fast charging). I was quite happy with that powerbank but felt a higher-capacity one would be useful as I go on multi-day treks in the Himalayas and need a powerbank that can charge multiple devices multiple times. I was initially quite apprehensive about buying this powerbank as I'd seen several bad reviews, mostly of the powerbank overheating dangerously while charging/being charged. Found a good deal during the recent Amazon sale so decided to buy it anyway. My observations: 1. My powerbank faced no overheating issues while being charged - I use a Vivo 100W charger and it takes about 2 hours to charge fully - not bad considering its capacity. 2. I used it to charge my phone and laptop a few times - again, no issues of overheating. It can charge my Vivo X100 Pro fully 4 times, which is good. It also charges my laptop to about 70% if I connect the powerbank to the laptop and I'm not using the laptop for anything - I assume it would charge the laptop far less if I was actually using it. 3. While it is heavier than the average powerbank, it is perfectly manageable - I'd say it's reasonably compact and light considering its capacity and charging speed - it is FAR lighter and more compact than the Portronics Ampbox 27k. It's not the kind of powerbank you can carry in your pocket, though. 4. The 20k mAh version of this powerbank has two USB-C sockets and one USB-A socket. This powerbank, rather strangely, has two USB-A sockets and only one USB-C socket. This is slightly annoying as everything is moving towards USB-C, not the other way around. Deducting one star because of this inconsistency. However, I still think this is a very useful high-capacity powerbank and am happy with my purchase (one month down the line - will update this review later in case of any issues)

Best powerbank to charge laptops and multiple mobile phones.

I purchased this Ambrane 100W Powerbank in June 2025 for ₹4,999, thinking it was a premium product for emergency backup. Unfortunately, my ₹5,000 has gone down the drain. The Issue: I have barely used this power bank ONCE for 20 minutes since I bought it. My plan was to keep it fully charged for power cuts. However, I discovered a major defect: Severe Self-Discharge. I charged it to 100% and kept it aside. When I checked after a week, it was completely dead (0% battery) without being connected to any device. I tested this twice to be sure, and the result was the same. It cannot hold a charge for even a few days. Conclusion: Don't be fooled by the outer build quality; the internal material and battery cells are of 3rd class quality. This is my second product from this brand, and both have failed prematurely. It is painful to lose hard-earned money on such unreliable tech. The price has dropped to ₹4,400 now, but honestly, it is not even worth ₹500. Verdict: Please save your hard-earned money and look for better brands. Highly Disappointed!

Excellent

Writing this review after 2 years of use . It worked fine for first 1 year later I noticed that it does only work if there are minimum 4 points. If light blinks less than four then device will not be charged.