






🔋 Power up your hustle—never miss a beat with unstoppable energy!
The Anker PowerCore 20K II packs a massive 20,000mAh battery with dual USB-C and USB-A ports delivering 15W fast charging. Designed for professionals on the move, it charges multiple devices simultaneously and offers up to 4.3 full iPhone charges. Despite its robust capacity, it remains compact and travel-ready, backed by an 18-month warranty and trusted Anker reliability.











































| ASIN | B0BYP4Y1N8 |
| Batteries | 1 Lithium Polymer batteries required. |
| Best Sellers Rank | 299 in Mobile Phone Portable Power Banks |
| Colour | Black |
| Customer Reviews | 4.5 4.5 out of 5 stars (8,371) |
| Date First Available | 24 Mar. 2023 |
| Item Weight | 470 g |
| Item model number | A1286 |
| Product Dimensions | 16.31 x 8.1 x 2.41 cm; 470 g |
| Special features | Fast Charging,Lightweight,Portable Charger,Travel |
J**E
Reliable and long-lasting, but very heavy
I’ve been using this power bank for over 1.5 years now, so I feel confident giving a proper review. It has been extremely reliable throughout this time and still performs just as well as when I first bought it. I consistently get around three full phone charges, which makes it perfect for travel, long days out, or situations where you really need dependable power. That said, it is very heavy. It genuinely feels like carrying a brick in your bag. If you prioritise capacity and reliability over weight, this is an excellent power bank. Just be prepared for the extra heft.
L**Z
Amazing- worth the price!
Amazing charger well worth the investment. I cannot comment on the longevity of this product as I’ve only had it for 3 months- so far so good! I went to Glastonbury and it only lost 1 bar for the full 5 days charging my phone! Also just got back from a 4 day trip and it lasted the whole time charging 2 phones and an Apple Watch multiple times a day. Pros: -long lasting charge - 2 USB ports and 1 USB C port - I can charge my iPhone 15 it’s hard to find portable chargers with USB C Cons: -takes a while to recharge - on the heavier side but not awful
A**R
Seriously well made, great capacity, long time to charge
Super impressed with this battery pack. I bought it to replace my previous large capacity battery (not Anker) which had fallen out of the top of my rucksack onto a train platform and started to swell up so I had to recycle it (context for what's to come) Having had good experience with previous Anker products I went for this one and have so far been really impressed. It's first job was to keep 3 GoPro batteries charged during the day on a 14 day motorcycle trip where we were recording constantly. It delivers a quick charge and was easily able to keep the batteries topped up. On the first night I accidentally knocked it off the 2nd storey balcony of my hotel room and it fell onto the concrete path below. I was expecting this to be terminal for the battery pack, but I was pleasantly surprised to find the plastic case just had some scuff marks on it but was not cracked, and the battery powered on as normal. I was a bit concerned about the battery internals might have been damaged so I cautiously plugged it in to charge and there was no excessive heat, the battery had not swollen up and other than the scratched case, it was performing as expected. The capacity of the battery is ideal for times when you don't have access to electricity (it kept my phone and watch charged on a 4 day camping trip), and the low power mode is great for trickle charging items with a small battery like watches or earphones. If I had one criticism it would be the time taken to recharge the battery. Despite having a USB-C port it does not seem to charge any quicker than my old micro-USB battery pack. But provided you're happy to leave it charging all day/ overnight, I would thoroughly recommend this battery.
P**S
Anker Power Bank, 325 Portable Charger
The Anker Power Bank, 325 Portable Charger (PowerCore 20K II) is a cracking bit of kit for anyone needing reliable on-the-go power. With its hefty 20,000mAh capacity, it can easily charge your phone multiple times before needing a top-up itself. This is especially handy for long trips or when you're out and about without access to a plug socket. One of the standout features is its dual USB ports, allowing you to charge two devices simultaneously. This is a real lifesaver when both your phone and tablet are running low on juice. The charger is also quite compact for its capacity, fitting nicely into a backpack or even a large pocket. However, it’s not without its flaws. The power bank is a bit on the heavy side, which might be a downside if you’re trying to travel light. Additionally, it takes quite a while to recharge fully due to its large capacity. Overall, the Anker Power Bank, 325 Portable Charger (PowerCore 20K II) is a reliable and powerful option for keeping your devices charged on the go, despite its weight and lengthy recharge time.
S**J
Easily lasts over 5 days
I bought this for use at a festival and can honestly say it’s very impressive in terms of charging for long period of time. I have two phones and it lasted the entire 5 days! I would say it is an absolute beast to charge the actual charger itself though, it usually takes a day or two to fully charge. And it is heavy. Really heavy. So I have a smaller charger for day to day use just as it makes my bag painful to carry and it is quite large. But for its intended purpose (charging) it is absolutely great!
A**R
Brilliant!!
Powerful and fast charging!!!
D**�
Good value
This has been used a few times now and works well. It's a good size, charges quite quickly and holds its charge well. All in all a good buy.
A**G
Damaged port after a few uses
Great power output, better than other cheaper piwerbanks ive had prevouslt. Charge lasts a while, able to keep up with charging 2 kids ipads on camping trips ! The USB A port broke after a few uses unfortunately so now limited to only the USB C only Recharge time for the device itself is around 5 hours I've found, and the device gets pretty hot when charging.
C**N
J'en avais déjà une (l'ancienne version) qui a très bien fait son job pendant presque 10 ans !!! Cette version est top (attention, elle reste lourde à transporter et ne rentre pas dans les poches d'un pantalon) mais elle semble inépuisable !!
E**N
Leistungsstarker Begleiter für unterwegs! Die Anker Powerbank 325 (PowerCore 20K II) mit 20.000mAh Kapazität hat sich als unverzichtbarer Begleiter für alle erwiesen, die unterwegs auf eine zuverlässige Stromquelle angewiesen sind. Ich nutze sie nun seit einigen Wochen, und hier ist meine detaillierte Bewertung: Design und Verarbeitung Die Powerbank besticht durch ihr minimalistisches Design und eine robuste Verarbeitung. Sie fühlt sich hochwertig an und ist dennoch kompakt genug, um problemlos in eine Tasche zu passen. Das matte Finish verhindert Fingerabdrücke und sorgt für einen sicheren Griff. Leistung und Kapazität Mit 20.000mAh bietet diese Powerbank beeindruckende Leistung. Sie schafft es, mein Smartphone iPhone bis zu fünfmal vollständig aufzuladen, bevor sie selbst wieder aufgeladen werden muss. Auch größere Geräte wie Tablets lassen sich problemlos mehrmals aufladen. Die Kapazität reicht locker für mehrere Tage ohne Steckdose, was besonders auf Reisen oder bei Outdoor-Aktivitäten praktisch ist. Ladeoptionen Die Powerbank verfügt über einen USB-C-Eingang sowie zwei USB-A-Ausgänge, sodass mehrere Geräte gleichzeitig geladen werden können. Besonders gut gefällt mir, dass die USB-C-Schnittstelle auch als Eingang fungiert und eine schnellere Aufladung der Powerbank ermöglicht. Allerdings wäre es wünschenswert, wenn der USB-C-Port ebenfalls als Ausgang für das Laden von Geräten dienen könnte. Schnelles Laden Dank der PowerIQ- und VoltageBoost-Technologien von Anker lädt die Powerbank alle angeschlossenen Geräte sehr schnell auf. Die Ladezeit ist spürbar kürzer im Vergleich zu Standard-Powerbanks. Besonders praktisch ist der integrierte Trickle-Charge-Modus für kleinere Geräte wie Kopfhörer oder Smartwatches, die sonst oft langsamer oder ineffizient geladen werden. Sicherheit Ein weiteres Highlight ist die MultiProtect Sicherheitsfunktion von Anker, die für zusätzlichen Schutz sorgt. Ich habe volles Vertrauen in das Gerät, da es Schutz vor Überladung, Überhitzung und Kurzschlüssen bietet. Fazit Die Anker Powerbank 325 (PowerCore 20K II) bietet alles, was man von einer hochwertigen Powerbank erwartet: enorme Kapazität, schnelles Laden und einen robusten Aufbau. Sie ist ideal für Vielreisende, Pendler oder alle, die oft fernab von Steckdosen unterwegs sind. Einzig der USB-C-Port könnte als Ausgang für noch mehr Flexibilität sorgen, aber das ist kein entscheidender Nachteil. Vorteile: • Enorme Kapazität von 20.000mAh • Schnellladefunktion mit PowerIQ und VoltageBoost • Robustes und kompaktes Design • Zwei USB-A-Ausgänge für das gleichzeitige Laden mehrerer Geräte • Trickle-Charge-Modus für kleine Geräte • MultiProtect Sicherheitssystem Nachteile: • USB-C-Port dient nur als Eingang, nicht als Ausgang Insgesamt bin ich sehr zufrieden und würde die Powerbank jedem empfehlen, der eine zuverlässige, langlebige Lösung für unterwegs sucht. Deswegen 5 Sterne:)
F**C
My old 20k powerbank from Anker which I have had for about 5 years got swollen. I think I had dropped in in the ground or something so a cell got injuried. But I'm really happy with Anker products in general so I ordered a new one. This one seems a little bit bigger in size.
J**S
Prima powerbank voor een goede prijs
E**O
Compré esta power bank Anker de 20,000 mAh y superó completamente mis expectativas. La calidad de construcción es excelente, se nota resistente y bien diseñada. Es un poco más pesada que modelos de menor capacidad, pero es normal considerando la gran carga que ofrece. Lo mejor es su duración: he podido cargar mi celular (con batería de 4,000 mAh) al menos 4 veces completas sin necesidad de recargar la power bank. También la he usado para cargar audífonos y un smartwatch sin problema. Otro punto a favor es la velocidad de carga. Gracias a la tecnología PowerIQ y VoltageBoost de Anker, los dispositivos se cargan de forma rápida y segura. No se calienta ni presenta fallos. Además, cuenta con varias salidas USB, lo que permite cargar más de un dispositivo al mismo tiempo. En resumen, si buscas una batería portátil confiable, duradera y con gran capacidad, este modelo de Anker es una inversión segura. Ideal para viajes, campamentos, trabajo o simplemente para no quedarte sin pila en el día a día.
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