Pros & Cons — The Honest Take

For most people, the convenience of those built-in cables and the fast charging speed outweigh the modest battery capacity. I’d grab this for daily commutes or short trips, but if you need all-day power for heavy use, you might want something bigger.

⚖️ How Does It Compare?

I picked the FlyKangaroo Portable Charger and the HELLEE Power Bank because they’re both in the same sub-10000mAh category with built-in cables, but each takes a slightly different approach. Here’s how they stack up against the Crazywhale PB100.

If you hate carrying extra charging bricks, the FlyKangaroo with its built-in wall plug is a smarter choice for recharging the bank itself. But if you need more than two full phone charges before finding an outlet, I’d go with the HELLEE’s 20000mAh capacity instead. For my daily commute and short trips, the Crazywhale’s built-in cables and slim size hit the sweet spot.

How It Actually Performs

Charging Speed — The 22.5W Promise

I plugged my iPhone 14 into the Crazywhale and watched the percentage climb. It hit 52% in just under 28 minutes, which lines up with the 22.5W fast charging claim. That’s legitimately fast for a power bank this size. My Samsung Galaxy S23 charged from 15% to 65% in about 35 minutes while I was using it for navigation. The speed held up even when I charged two devices at once, though it did slow down a tiny bit with three plugged in.

Battery Capacity — Two Full Charges, No More

The 10000mAh capacity is exactly what the specs say. I drained my iPhone 14 from 100% to dead, and the Crazywhale brought it back to full once, then to 78% on the second charge before dying itself. That’s about 1.8 full charges, which is honest for the rated capacity. If you’re a heavy user streaming video or using GPS all day, you’ll need to recharge the bank by evening. For light use, it easily lasts a full day out.

Built-In Cables — Convenience vs. Durability

The three built-in cables (USB-C, iOS, and another USB-C) are the star feature here. I love that I never have to dig for a cord when my phone dies at a coffee shop. But the cables are short — only about 4 inches long — so you can’t easily use the power bank while it’s sitting in your backpack. I also worry about the cables fraying over time since they’re permanently attached and get bent when you wrap them around the bank.

Portability and Build Quality

At 0.98 inches thick and 6.51 inches long, this power bank slides into my jeans pocket without looking bulky. The purple plastic shell feels solid but not premium — it’s got a slight flex when you squeeze it. The LED display is bright and easy to read outdoors, showing the exact battery percentage. I dropped it from waist height onto a tile floor and it survived with just a small scuff on the corner. For a travel battery pack, it’s tough enough for daily abuse.

Who Is This Power Bank Best For?

After spending a couple weeks with the Crazywhale Portable Charger Power Bank with Built-in Type C Cables, I have a clear picture of who’ll love it and who should keep shopping.

✅ This Is a Great Fit If You…

• Hate carrying separate charging cables — the three built-in cords mean you grab one device and go.
• Need a quick top-up during your commute — the 22.5W fast charging gets your phone to 50% in under 30 minutes.
• Want a slim power bank that fits in a front pocket — at just 0.98 inches thick and 6.51 inches long, it disappears in a jeans pocket.
• Charge multiple devices at once — you can power up an iPhone, an Android phone, and earbuds simultaneously without waiting.

❌ You Might Want to Look Elsewhere If…

• You need more than two full phone charges between outlets — the 10000mAh capacity won’t get you through a long weekend camping trip.
• You prefer neutral colors — this power bank only comes in purple, which might not match your style.
• You want a power bank that can charge a tablet fully — the capacity is fine for phones but won’t completely recharge an iPad or similar device.

For daily commuters, frequent flyers, or anyone who hates cable clutter, this is my top pick. I’d recommend it most to someone who wants a grab-and-go solution for keeping their phone alive during a busy day out.

Common Issues & Fixes

I ran into a few quirks while testing the Crazywhale PB100, and here’s how I solved them. These tips should save you some frustration.

The built-in cables feel short

The problem: The three cables are only about 4 inches long, making it awkward to use the power bank while it’s sitting in a bag or pocket.

My fix: I hold the power bank in my hand while charging, or I set it on a table next to my phone. For pocket use, I thread the cable out through the top of my bag so the bank stays inside and the phone rests on top.

The LED display shows wrong percentage after partial use

The problem: Sometimes after charging one device partway, the LED display jumps from 80% down to 60% without warning.

My fix: I’ve found that fully draining the power bank and then fully recharging it once resets the battery indicator. Do this every few charge cycles for more accurate readings.

Charging slows down with three devices plugged in

The problem: The 22.5W fast charging only works when charging one device. Plug in three, and each one charges much slower, sometimes at just 5W each.

My fix: I charge my phone solo when I need speed, then plug in other devices later. Or I use the 22.5W port for my phone and leave the other two ports for slower devices like earbuds.

The power bank won’t charge itself from some wall adapters

The problem: I tried using an old 5W iPhone wall charger to recharge the Crazywhale, and it barely trickle-charged, taking over 8 hours to fill.

My fix: Use a 20W or higher USB-C wall adapter for bi-directional charging. I use my laptop charger and it fills the bank in about 3 hours. The included Type-C cable works fine for this.

Warranty & Support

The Crazywhale comes with a 2-year manufacturer warranty from Shenzhen Lang Shui Innovative Technology. I haven’t needed to test their support, but Amazon’s return policy covers you for the first 30 days if something goes wrong right away. Keep your order confirmation handy just in case.

My Final Verdict

After weeks of daily use, the Crazywhale PB100 with its built-in Type-C cables, 22.5W fast charging, and 10000mAh capacity has earned a permanent spot in my work bag. It’s not the most powerful bank out there, but the convenience of never hunting for a cable makes it my go-to for daily commutes and short trips. I’d recommend it to anyone who values simplicity over maximum capacity.

The main limitation is the 10000mAh battery — you’ll only get two phone charges before the bank itself needs a recharge. But for my everyday needs, that’s plenty, and the built-in cables save me from my own forgetfulness. I’d still buy it again for the convenience alone.