Anker PowerCore 20100 - Ultra High Capacity Power Bank with Most Powerful 4.8A Output, PowerIQ Technology for iPhone, iPad and Samsung Galaxy and More (Black)

I’ve been a fan of Anker products for a while now and they’re my first choice brand. Excellent quality products and value for money and backed up with first class after service for peace of mind. Simple yet robust. It charges my devices quickly and is more than enough for me to use out and about for a number of days. I don’t stress out anymore with this by my side. It’s not the fastest in charging up but understand it’s better for product longetivity. Fine by me and just plug it in overnight and good to go by AM. What sets Anker apart is the after service if anything goes wrong. I’ve seen it reported by other people and I got to experience it recently. I had found the micro USB connection for power input always a tad loose from the beginning. I let it go as I could get by. Then it reached a point where it was difficult getting a secure connection. I sent Anker an email with a description of the problem. Initially I asked for just a new cable because a different cable did help make it better and I didn’t want to get into a bun fight. Anker asked me a few questions to ascertain root cause and concluded the port was faulty and sent me out a brand new powerbank very quickly! Wow! Am very impressed. A company that didn’t just do the bare minimum but wanted my compete satisfaction. You’ve certainly got that. Well done and thanks again Anker! Update: 7 June 2019 I bought the original back in July 2018. A replacement as per above was sent to me due to Micro USB port being faulty. Gave great service and the unfortunately the replacement developed a fault when whilst charging it would stop after a few minutes. Contact led Anker and again they responded quickly and sent me out a new one with no quibble and very quickly. They were naturally disappointed that I had to contact them again and I accept that it is rare occurrence. Very happy with the after service of this company and they’ve come through for me again.

I was looking for a power pack that delivers on three fronts. Firstly, and most importantly I needed a pack that could deliver a high-current. Secondly, I needed a unit that had a good capacity. Lastly, I needed a pack that was easily portable and didn't take up too much space. My application is perhaps a little different from the norm. rather than having a portable recharging capacity for my phone, I’m looking for a power pack for LED lighting arrays; a long strip of LED's. I need them to be powered independently of household mains supplies in a package that could easily be swapped out for recharging. Depending on the controller, the power requirements of the LED array can vary from around 0.5 watts with only a few LED’s lit, up to about 20 watts with all LED’s lit. That’s quite a load for a battery pack. Many power packs claim to have a 2 Amp current delivery capability, but this unit with a purported output of 4.8 amp across 2 USB ports (2.4 Amp per port) and a good charge capacity make it a great candidate for my needs. Form Factor About the size of a small pencil case (166 x 58 x 22 mm), the Aker 20100 is a good size for my needs. It has a good heft to it too. Weighing in at a specified 356 grams, it feels like a solid bit of kit. The case is plastic but it feels robust and looks very smart. Power Delivery With the two USB ports connected in parallel I testing the device up to 4 amps, the most I can draw with my current electronic load. I also tested each of the ports individually at 2.4 amps, the maximum specified load for this unit, while monitoring the output voltage and the temperature. It did get quite warm (48°C – I measured it!) after a few minutes with a 2.4-amp load, understandably given the high current load, but that was on the metal USB connector itself. The plastic surrounding the sockets was warm, but not hot enough to worry about. Some power packs I’ve tested have low-quality batteries and cheap voltage regulation circuitry result lead to a dreadful output voltage drop at high, or even not so high current loads. That’s certainly not the case with the Anker 20100 Power Bank, however. Even with a 4 Amp load, the voltage regulation is excellent, with the voltage only dropping to a measured 4.75 volts. That’s much better than I’ve seen on many similar packages, and the reality is that most of that drop would have been over the wires I was using. Skinny little USB cables are not designed for high current. I noted that at around 1.7 amps load, the voltage regulator stepped the voltage back up from around 4.95 back up to 5.05 volts. I’m guessing this is the advertised VoltageBoost features in action. For phone charging scenarios where a phone is drawing around 1.8 – 2-amp charge from this device, the regulator maintains a good voltage level to make charging your phone as quick as possible. It should be noted that this unit is a offers a fixed voltage, nominal 5-volt, output and does not use the Qualcomm Quick Charge protocols allowing higher power fast charging capabilities. Charging It's claimed that the unit will charge in about 10 hours with a 2 Amp charger. My timing of the charging cycle agreed with that. Given a quality 5-volt supply, i.e. a supply that doesn’t drop too much when pulling a high load, the unit pulled fractionally over 2 amps at 5 volts (I used a precision lab-quality power supply for the exercise) the pack reliably charged at around 9 hours 20 minutes. As advertised, the unit switched itself off when it reached its fully charged state. Clearly, the regulator is intelligent enough to sense when the internal battery pack is fully charged and switches the charging current off rather than allowing the pack to overcharge, potentially damaging the batteries, shortening their lifespan and overheating the pack. A nice touch. The charge state can be monitored with four blue LED indicators showing the condition of the pack. Measured Capacity Before I get to the figures, it should be understood that devices of this type use battery packs that supply a higher than the specified voltage to a power converter (buck type DC-DC converter). The converter then delivers a regulated 5v into the USB sockets. These devices are never 100% efficient. Power loss from heat generated in the converter, and even voltage losses in your cables can influence the perceived capacity of a power bank, so it shouldn’t be a surprise when the delivered power is a little shy of specifications. The Anker 20100 Power Bank uses six high-quality Lithium-Ion NCR18650B batteries, with a series connection of two groups of three batteries connected in parallel giving a nominal output of approximately 7.2. This supply is then run through the DC to DC buck converter to deliver power to the USB ports at 5 volts. Measuring the energy delivered in Watts (Watt = Volts x Current) over a time period, as opposed to a current (Amps) over a time period, a value that has no consideration of the voltage of the circuit being measured, is a much better way of comparing power packs, so that’s the value I’ll use here. To measure the energy delivered by the pack, I ran a number of tests to obtain capacity comparisons. In these tests, I connected the two USB ports in parallel to reduce the amount of heat generated by the circuitry and an additional test with maximum load on one port to test the limits of the device. I tested using a 1-amp, 2-amp, and 4-amp load, tracking the voltage, current and calculating capacity for a fully charged pack to the point where the output voltage dropped below 4.4 volts, i.e. when the 5-volt USB supply isn’t actually supplying 5-volts any more, even when rounding up the measured values. While I had set a cut-off point for the tests, the voltage output dropped from the nominal 5-volt output to 0 volts at the point of power exhaustion. That bodes well for the longevity of the device. More power could probably be gleaned from the batteries, but the regulator in the power bank is sophisticated enough to sense when the internal battery voltage is reaching its limit and switches the output off rather than allowing the pack to discharge to the point where the batteries become damaged. All of the tests rendered an approximate 60Wh energy transfer. Given that the specifications offer the capacity at 72.36Wh that gives us an approximate 84 % efficiency in delivering real-world power, which isn’t bad at all for this type of device. Summary I’ve tested a number of power packs over the course of the past few months and the Anker 20100 Power Bank has proven to be excellent. It’s physically a good size, is well built, charges quickly, and delivers the high current I need at a consistent nominal voltage in a package that offers high capacity for a reasonable price. It’s an excellent unit and I can highly recommend it.

The powercore has been a great device, although there is one small defect that I will explain. It was originally bought for use at festivals and was perfect for this purpose. The device supports fast charging and took about 90 minutes to give my phone a full charge and this would lose perhaps one of the blue charge level lights. I expected to get 4 full charges and still have enough for maybe another half typically, it could then be left to charge overnight with a festival locker and I had the ability to look after myself and friends all day. Admittedly it is quite bulky and heavy but that's the price you pay for it's MAH (milliamp hours), but you do get used to just putting it into an inside jacket pocket and forgetting about it. I found it totally durable as after 5 festivals during the season it had nothing more than a few light scratches and worked perfectly, even after some wet weather and some alcohol spilled on it. A quick wipe down and it was sound. I came to rely on it so much that I took it everywhere I went if I thought I may be away from a power point. Now we come to the issue. After a little over a year the device would no longer accept charge. Perhaps it was a fault in the usb socket or a short inside, I can't say, but after trying multiple charge cables and power bricks I was beaten. In defence I do believe the device had been used enough times to warrant a high use moniker, above what is typically expected. A quick email to Anker and after a serial number check they were happy to replace the device without hassle. They didn't ask for the previous device back, likely as it's not worth the cost of shipping. This approach may of been useful to find out what caused the fault and rectify it for newer models but c'est la vie. It took just 2 days to get the replacement and it's great to have the old friend back to rely on. Can't fault the service.

Sehr guter Akku mit schneller Ladefunktion und langer Ausdauer. Perfekt für mehrere Ladezyklen geeignet. Gut für den Einsatz für Kleingeräte zur USB-Ladung.

Awesome

Meine Frau besitzt ein IPhone 7, welches bekanntermaßen nicht gerade vor Batterieleistung strotzt. Ich habe ihr aufgrund dessen diese Powerbank gekauft. Zunächst aber aber der Sinn, dass daran ein altes Handy zwecks Raumüberwachung (mit entsprechender App) genutzt werden sollte. Da ich aber nicht sehr zufrieden mit der Überwachung per Handy war, habe ich mich dann doch um entschieden. Nun war natürlich die Powerbank quasi nutzlos, bis meine Frau dann den entsprechenden Einwand hatte und sie nun dies Powerbank nutzt. BESCHREIBUNG: ------------------- Die Powerbank kommt gut verpackt und zusätzlich in einem kleinen schwarzen Stoffsäckchen mit Anschlusskabel daher. Es befindet sich dort noch zusätzlich eine kleine Gebrauchsanleitung, die aber m. E. überflüssig ist. Angeboten wird diese Powerbank in drei verschiedenen Ladekapazitäten. Ich habe mich persönlich für die mit 20100 mAh entschieden, da diese somit länger verschiedene Abnehmer laden kann. Robustheit wird im Artikel beschrieben! Dies kann ich definitiv doppelt und dreifach unterschreiben, denn mir ist dies Powerbank bereits mehrfach herunter gefallen. Es gab bisher keine Aussetzer oder Probleme. FAZIT: ------- Diese Powerbank ist absolut eine TOP-Powerbank. Sie lässt sich über Nacht mit dem entsprechenden Equipment laden und halt sehr lange. Wie bereits erwähnt, nutzt meine Frau ein IPhone 7 und kommt mit dieser Powerbank eine ganze Woche und teilweise mehr über die Runden. Für mich war es ein guter Kauf und ich kann für dies PB eine klare Kaufempfehlung abgeben. HINWEIS: ---------- Diese Rezension spiegelt meine persönliche Erfahrung und Empfindung wieder und erhebt keinesfalls den Anspruch auf Vollständigkeit.

Uso la batería para cargar el móvil, el iPad cuando no estoy en casa, no los carga en poco tiempo pero tampoco considero que en demasiado, las cargas de los equipos siempre llevan un tiempo aun cuando los cargues directo a la corriente, si hay que señalar algo es que pesa, pero hasta ahora muy bien

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