When the electricity cuts out, your phone often becomes the one thing you cannot do without: your torch, your link to family and, for many people, the way work gets done.
Between power cuts, generator switch-overs and long days away from a socket, a reliable power bank can make a real difference. The numbers printed on the box can be confusing, though, and the biggest pack is not always the right one.
Here is how to read the specifications and choose a power bank in Lebanon that matches the way you actually use your phone.
1. Understand What mAh Really Means
Power banks are sold by capacity in milliamp-hours (mAh). The catch is that this figure describes the battery cells inside the pack, measured at their own internal voltage, which is usually around 3.7V.
To charge your phone, the power bank has to convert that energy to 5V or higher at its USB ports, and some of it is lost as heat along the way. Your phone also loses a little while it charges. So the amount that reaches your phone is always lower than the label suggests.
Some manufacturers print a second, lower figure to reflect this. The Hoco 30,000mAh power bank, for example, lists a rated capacity of 17,700mAh alongside its 30,000mAh headline figure. That lower number is closer to what you can expect to get out of the ports.
As a rough rule of thumb, a 10,000mAh power bank usually charges a typical smartphone roughly one and a half to two times. The exact number depends on the phone, and phones with very large batteries will get fewer full charges.
You may also see capacity given in watt-hours (Wh), which is a clearer measure of stored energy. The oraimo Toast 15 Flash 10000mAh power bank, for instance, is listed as 10,000mAh (37Wh). The Wh figure matters if you plan to fly.
2. Choose the Right Size for How You Use It
Bigger is not automatically better: a larger pack is also heavier and slower to refill. A simple way to choose:
- 10,000mAh for daily carry: light enough for a pocket or small bag, and usually enough to get one phone through a long day.
- 20,000mAh for a long day out, a weekend away, or keeping two devices topped up, such as a phone and a pair of earbuds.
- 30,000mAh and above for home backup during long power cuts, or for keeping several family phones charged.
For everyday carrying, a 10,000mAh pack like the oraimo Toast 15 Flash is a sensible starting point. If you want more in reserve, the Philips 20,000mAh power bank adds a digital display, so you can see how much charge is left.
For home backup, larger packs make more sense, but check the weight. The Hoco 30,000mAh model is listed at 585g, the Hoco 50,000mAh power bank at 974g and the Hoco 60,000mAh power bank at 1,200g. At that weight, they are better suited to staying at home than travelling in your pocket.
Also think about recharging. A big pack needs a long time to refill, so it is worth plugging it in as soon as the electricity or generator power comes back. The Hoco 30,000mAh, for example, lists a 5V/2A input, which is modest for a pack of that size.
3. Check the Output and Fast Charging Support
Capacity tells you how much energy a power bank holds. Output tells you how quickly it can deliver that energy to your phone.
Output is usually shown in volts (V) and amps (A), or in watts (W). Multiply volts by amps to get watts: 5V at 2.1A is about 10.5W, and 5V at 3A is 15W.
For faster charging, recent iPhones and many Android phones use USB-C Power Delivery (PD). Your phone will only fast charge from a power bank if both support a compatible standard. Our guide on how to choose the right fast charger for your phone explains this in more detail.
A few examples from our listings:
- Hoco 50,000mAh: two USB ports rated at 22.5W and a USB-C PD output rated at 20W.
- MAXMATE 10,000mAh magnetic power bank: 20W PD fast charging.
- Hoco 30,000mAh: two USB ports at 5V/2.1A, which suits slower, steady charging overnight or during a long cut.
Check the total output line too. The Hoco 50,000mAh lists a total output of 5V/3A, which means that when several devices are plugged in at once, they share that output and each one charges more slowly.
4. Look at Ports, Displays and Practical Extras
During a power cut, the whole household may want a charge at the same time, so the number of ports matters more than you might expect.
The Hoco 60,000mAh, for instance, lists five outputs: one USB port at 22.5W, a USB-C port at 20W and three more USB ports at 5V/2.1A. It also accepts Lightning, Micro-USB or USB-C for recharging, so you can refill it with whichever cable you have to hand.
Other features worth checking:
- A digital display that shows the remaining percentage, which is easier to read than a row of small lights.
- A desk lamp function, which both the Hoco 50,000mAh and 60,000mAh models list, and which can be useful in the evening when the power is out.
- Built-in cables, as on the Ven-Dens 10,000mAh power bank, so you are not hunting for a cable.
5. Consider a Magnetic Power Bank
Magnetic power banks attach to the back of your phone, so you can keep using it while it charges. This is handy when you are on a call, following navigation in traffic, or moving around the house during a cut.
The MAXMATE 10,000mAh magnetic wireless power bank combines magnetic wireless charging with 20W PD fast charging. To attach magnetically, your phone needs MagSafe or a compatible magnetic case, and to charge from it wirelessly, the phone must support wireless charging.
Keep in mind that wireless charging is generally less efficient than a cable and can make your phone warmer, so use a cable when every bit of charge counts.
6. Keep Your Wi-Fi Running With a Mini Router UPS
A power bank keeps your phone going, but during a cut or a generator switch-over, your Wi-Fi router usually goes off too. Each time, you wait for it to restart and reconnect.
A mini router UPS sits between your router and the wall socket and keeps the router running from its own battery when the electricity drops. The Mini Router UPS lists a 37Wh battery (3.7V/8800mAh), a 100-240V AC input, a selectable DC output of 5V, 9V or 12V at 1.5A, a 24V PoE output and a USB port at 5V/2.4A.
Before buying, check the label on your router’s power adapter. The voltage needs to match one of the UPS outputs, and the router should not need more current than the UPS can supply. If you are unsure, bring the adapter details with you and our team at H2 Group can help you check.
How long it keeps the router running depends on how much power your router uses. It also cannot keep you online if your provider’s equipment outside your home loses power.
Flying With a Power Bank
If you travel, airline rules for power banks are based on watt-hours rather than mAh:
- Power banks go in your carry-on bag, never in checked luggage.
- Airlines generally allow power banks up to 100Wh in the cabin without approval. That is about 27,000mAh for a pack with standard 3.7V cells.
- Packs between 100Wh and 160Wh usually need the airline’s approval, and larger packs are generally not accepted on passenger flights.
- Some airlines also restrict using or charging a power bank during the flight.
For example, the Hoco 30,000mAh is listed at 111Wh, which is above the 100Wh limit. The Hoco 50,000mAh (185Wh) and 60,000mAh (222Wh) are best treated as home backup only. Always check your airline’s rules before you fly.
Using a Power Bank Safely, Especially in Summer
Power banks store a lot of energy in a small space, so a little care goes a long way:
- Avoid unbranded packs with no clear specifications.
- Stop using any power bank that is swollen, cracked, leaking, unusually hot or giving off a smell, and never try to open or puncture it.
- Do not leave a power bank in a hot car, charging or not. A parked car in Beirut’s summer heat can get very hot inside. Our guide on why your phone overheats in summer covers heat and charging in more detail.
- Charge it on a hard, open surface, not under a pillow or on a bed.
- Refill it with a good-quality charger and cable.
A Quick Buyer Checklist
Before you choose, ask yourself:
- How many charges do I need, and for how many devices?
- Will I carry it every day, or keep it at home for power cuts?
- Does it support fast charging for my phone, such as USB-C PD?
- How many ports does it have, and what is the total output?
- How heavy is it, and how long will it take to refill?
- Will I be flying with it?
Find a Power Bank at H2 Group Beirut
You can browse power banks, chargers, cables and the router UPS in our Powers For Charging category. If you are not sure which size or type suits you, visit either of our branches and our team can help you match a power bank to your phone and your routine.
H2 Group Hamra
Bliss Street, Hamra, Beirut
Phone: 71 26 25 26
H2 Group Tareek Al Jadidah
Tareek Al Jadidah, Beirut
Phone: 71 26 25 24
Whether you need a small pack for your daily bag or a larger backup for evenings at home, H2 Group can help you find the right option.