What size power bank do I need for a phone?

A 5,000–10,000mAh power bank is light to carry and gives most phones one to two full charges. If you want several top-ups or to charge a phone and earbuds together, step up toward 10,000mAh or more. Match the capacity to how long you're away from a socket.

Can a power bank charge a laptop or gaming handheld?

Yes, if it supports USB-C Power Delivery (PD) at enough wattage for that device — laptops and handhelds draw far more than phones. Check the bank's PD output in Watts, not just its mAh capacity. A high-capacity bank without enough PD output won't reliably power a laptop.

Why doesn't my power bank deliver its full rated capacity?

The mAh figure is the internal cell's total, but charging loses some energy to voltage conversion and heat, so real-world output is lower. This is normal for every power bank. If you need a guaranteed number of charges, size up to leave headroom.

Can I take a power bank on a plane?

Most airlines permit power banks up to about 100Wh (roughly 27,000mAh) in carry-on luggage, and they must never go in checked bags. Larger units may need airline approval or be refused. Always check your carrier's current rules before travelling.

Are power banks safe to leave charging overnight?

Quality power banks include protection against overcharging, over-current and short circuits, which makes them safe for normal use. Use the supplied or a reputable cable and avoid cheap, unbranded units with no safety certification. Charge on a hard, ventilated surface rather than under bedding.

Is a power bank useful during a power outage?

Yes — a power bank keeps your phone and small devices charged through an outage so you stay reachable when the power's out. For phones and earbuds it's ideal; for a laptop you'll want a high-capacity USB-C PD model. It's one of the most practical low-cost backups for South African outages.

Does a higher mAh power bank charge faster?

No — capacity (mAh) is how much charge it holds, while charging speed depends on the output standard and wattage. A large bank with only slow USB-A ports charges no faster than a smaller one. For quick charging, look for USB-C Power Delivery and use a cable rated for that wattage.

Do power banks come with a warranty in South Africa?

Power banks bought from Evetech ship with local warranty and nationwide delivery, so you're supported locally rather than dealing with an overseas seller. Check this page for current stock and the warranty term listed on each model.

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Power Banks

Power Banks & Portable Chargers 🔋

A power bank is a rechargeable battery you carry with you, ready to top up a phone, tablet, earbuds or handheld console when there's no wall socket nearby. It's the simple answer to a flat battery on the road, on a flight, at an event, or during a power outage when you still need to stay reachable.

Size it to what you charge. A 5,000–10,000mAh bank is pocketable and good for a phone top-up or two; 20,000mAh and up keeps several devices going across a long day or refills a tablet. To charge a laptop or a gaming handheld, you need a USB-C Power Delivery (PD) model with enough wattage — check the output, not just the capacity. Remember the rated mAh is the cell's total, so real-world output is a bit lower after conversion.

Evetech stocks power banks from compact daily carries to high-capacity, multi-port units, all with local warranty and nationwide delivery. Compare capacity, output and ports below, and match the bank to your most demanding device rather than your lightest one.

How to Choose a Power Bank

Two numbers decide most of it: capacity (mAh, how much charge it holds) and output (Watts and ports, how fast and how many devices it charges). Match both to your hardest device — usually a laptop or handheld — and the rest looks after itself. The guide below covers the details worth checking.

For phone top-ups, a 5,000–10,000mAh bank is light and enough for a day. For multiple devices or a full tablet recharge, step up to 20,000mAh or more. Bear in mind the rated capacity is the internal cell total — after voltage conversion you get somewhat less out, so size up rather than down if you're cutting it fine.

Only if it supports USB-C Power Delivery (PD) at enough wattage for the device — laptops and gaming handhelds need far more than a phone. Check the bank's rated PD output in Watts against what your device draws. A high mAh figure alone doesn't mean it can power a laptop, so the output spec is the one that matters here.

Charging speed depends on the bank's output standard and the cable. USB-C PD and similar fast-charge protocols deliver more power to compatible phones and laptops, while older USB-A ports are slower. Use a cable rated for the wattage you want, as a thin or old cable will bottleneck even a capable power bank.

Multi-port banks let you charge a phone, earbuds and a tablet at once, though total output is shared across the ports. Look for at least one USB-C port for modern devices and fast charging. If you carry a laptop, make sure that USB-C port supports PD at the wattage you need.

Most airlines allow power banks up to around 100Wh (roughly 27,000mAh) in carry-on luggage, and they must not go in checked baggage. Larger units may be restricted or need approval. Check your specific airline's rules before you fly, since limits and quantities vary by carrier.