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Xenoni.me
Русский
Powerbank 20000 mAh
Prenosne baterije od 20 000 mAh za one kojima jedan telefon dnevno nije dovoljan: dva telefona, tablet ili slušalice uz telefon, kamp i putovanje. Sve staju u ručni prtljag (ispod 100 Wh). Vodič za izbor je ispod liste.
Power bank 20000 mAh — who it makes sense for
Twenty thousand milliamp-hours is the choice for people who charge the phone several times a day, carry a tablet or go away for a weekend without a socket. It realistically gives 3–4 phone charges or one tablet charge, weighs 350–450 g and still passes as hand luggage on a plane (under 100 Wh). At Xenoni.me this page has every 20000 mAh model we stock, at the lowest prices in Montenegro.
What to watch at 20000 mAh
- Input power — a power bank this size takes 6–10 hours to recharge over regular USB; models with an 18–30 W USB-C PD input recharge in 3–4 hours. This is the most overlooked spec.
- Output power — 20–22.5 W PD for fast phone charging; 45–65 W if you want to charge a laptop too.
- Number of ports — 2–3 ports to charge several devices; total power is shared.
- Display — on a big power bank the percentage matters, because you recharge it less often and easily forget where it stands.
Real capacity
Cells run at 3.7 V while USB delivers 5–20 V; the conversion costs 30–40 %. A 20000 mAh power bank actually delivers about 12000–14000 mAh at 5 V — that is 2.5–3 charges of a 5000 mAh phone, not 4. This is true for every manufacturer; those promising more are simply not telling the truth.
Flights and safety
Up to 100 Wh (20000 mAh × 3.7 V = 74 Wh) goes in hand luggage with no approval; it may not go in checked baggage. All our models have overcharge, short-circuit and overheat protection. For something smaller and lighter take a 10000 mAh power bank. 12-month warranty, 24–48 h delivery, cash on delivery.
Frequently asked questions
How many times does a 20000 mAh power bank charge a phone?
Realistically 3–4 times for a phone with a 4500–5000 mAh battery, or one tablet. Because of conversion losses it actually delivers about 12000–14000 mAh at 5 V — true for every manufacturer.
Can a 20000 mAh power bank charge a laptop?
Only models with a 45 W or higher USB-C PD output and a laptop that charges over USB-C. With a 20 W model the laptop will not charge or charges very slowly. Each listing states the output power.
Why does a big power bank take so long to recharge?
20000 mAh over regular USB takes 8–10 h. Choose a model with a USB-C PD input (18–30 W) — it recharges in 3–4 h; charge it overnight with your phone charger.
Can I take a power bank on a plane?
Yes, in hand luggage — never checked. Up to 100 Wh (about 27000 mAh) with no approval; 10000 and 20000 mAh are well below that limit. The Wh capacity is printed on the power bank.
What is the warranty and how long does a power bank last?
12-month warranty against manufacturing defects. Quality cells endure 500–1000 cycles (2–4 years). Do not leave it empty for months and do not keep it in a car in the sun.
How do I pay and how long does delivery take?
Payment is cash on delivery; courier delivery across Montenegro takes 24–48 h from confirmation. You can also collect in one of the 7 Xenoni.me stores.