Alza discounted its giant 50,000mAh power bank! It can do up to 100 W and even charge a laptop

Do you need a single power source that can charge your phone, tablet, and laptop far from an outlet? You can now get the AlzaPower BigFoot with a capacity of 50,000 mAh on Alza with an AlzaPlus+ membership for 2,249 CZK instead of the usual 2,499 CZK.

Quick summary:
✅ Makes sense if you want a lot of capacity and 100W laptop charging at a reasonable price — for camping, travel, or as a backup in case of an outage.
⚠️ Consider that at 925 g, it’s not pocket-friendly, the LED flashlight is weak, and reviews mention complaints about port reliability.
💡 For 2,249 CZK, you get a lot of power for little money — just keep in mind that you’ll realistically charge less than the number on the box indicates (and this applies to all power banks).

Why this power bank is interesting

The main draw is the capacity-to-price ratio. 50,000 mAh with 100W output under 2,300 CZK is an offer you often won’t find with branded power banks. AlzaPower BigFoot targets people who need power far from an outlet: for multi-day trips, camping, festivals, or as a home backup when the power goes out. The key is the 100 W — thanks to it, you can charge a laptop, not just a phone.

Key parameters

What can 50,000 mAh actually power? You can charge a typical phone about eight times (more on that in a moment), and reliably charge a MacBook from zero to full with power left over. Power distribution is handled by Smart IC, which automatically recognizes the connected device and sends it the optimal current — allowing you to charge up to four devices simultaneously via two USB-C and two USB-A ports. However, pay attention to power distribution: the full 100 W flows only from the first USB-C, the second provides 65 W, and if you connect all four ports at once, the total output drops to 15 W.

A big plus is the charging speed of the power bank itself: with a 100W charger, you can fully charge it in about 3 hours, which is excellent for this capacity — cheaper models with the same volume can charge all night. The LCD display shows the remaining capacity, as well as current voltage and current, so you have an overview of what’s happening. Six-stage protection against overvoltage, overheating, short circuits, and other risks ensures safety.

Practical aspects: weight, flashlight, and living with it

The first thing you’ll notice is its weight of 925 grams. This isn’t a power bank for your pants pocket — it’s almost a kilogram for your backpack, so you take it on trips where you know you’ll need it, not for a regular day in the city. The aluminum body feels robust, and the strap makes it easy to hang in a tent or on a backpack. Its dimensions of 148 × 91 × 49 mm make it more of a brick than a flat slab.

The integrated LED flashlight with SOS mode sounds appealing in the description, but let’s be honest based on what owners say: it’s sufficient for emergency room illumination during a power outage, but not for proper outdoor lighting — it’s weak. One reviewer directly called it useless, for which they would have preferred to pay a few crowns less. Consider it a bonus for emergencies, not a full-fledged flashlight. A minor note: some units arrived with inverted logos — a cosmetic defect that reportedly affects multiple units.

What users say and what to watch out for

On Alza, the power bank has a rating of 4.2 out of 5 from 19 customers and 79% recommendation, with a return rate of 2.66%. Satisfied buyers praise its fast charging (can handle two laptops), large capacity, metal body, and useful display. However, there are also strongly negative reviews that cannot be overlooked: one customer returned non-functional USB-C ports twice in a row, another’s power bank stopped working after a week, and another stated that it only charged at 25 W instead of the promised 100 W. This is a warning sign for this type of electronics that deserves mention.

The second major theme in reviews is “false capacity”. One user complained that instead of 50,000 mAh, they only charged a Samsung eight times, which corresponds to approximately 32,000 mAh. However, here it’s necessary to defend the manufacturer: this is not a defect, but physics. The 50,000 mAh figure is the capacity of the cells inside — during voltage conversion and due to heat, some energy always dissipates, and this applies to every single power bank on the market. Eight phone charges from a bank of this size is a realistically expected result, not a scam. The good news is that AlzaPower offers immediate replacement for a new unit at a branch for most products, which is a welcome relief for reported port issues.

When it doesn’t make sense

If you want a power bank for everyday use in your pocket or small handbag, this isn’t for you — almost a kilogram and the dimensions of a brick make it a companion for trips, not for commuting. For a regular phone charge during the day, a lighter 10,000 or 20,000 mAh model will suffice at a fraction of the price and weight. Similarly, if you need a powerful flashlight for outdoor activities, don’t get the BigFoot for its LED — rather buy a separate headlamp. And given the reported issues with port reliability, I would wholeheartedly recommend it mainly to people who know they can go to an Alza branch to replace the unit in case of a defect. However, for those who appreciate large capacity, 100W charging, and a reasonable price, this offers great value for money.

Verdict: who it’s worth it for

AlzaPower BigFoot offers a lot of capacity and power for little money — for 2,249 CZK with AlzaPlus+, you get 50,000 mAh, 100W laptop charging, four ports, and a clear display. It’s an ideal power bank for camping, multi-day trips, and as a home backup in case of an outage. The main drawbacks are its high weight, weak flashlight, and inconsistent reliability, as shown by reviews — much depends on the specific unit. If you buy it knowing that Alza handles potential defects with a replacement, and you’re looking for maximum capacity for the price, it’s a reasonable choice. Additionally, AlzaPlus+ membership discounts change, so if you’re considering the power bank, it’s worth not delaying.

What’s more important to you in a power bank — the largest possible capacity, or low weight for your pocket?