If material or manufacturing faults that are considered to constitute a warranty claim occur during the warranty period, Hama GmbH & Co KG will resolve the fault free of charge by repairing the goods or replacing them a product that Hama GmbH & Co KG deems to be equivalent. If you’re going to be storing your power bank for an extended period of time, you should leave it with a charge somewhere around 50 per cent. How long does a power bank take to charge? Get freedom from your wall for over a week. PowerCore 26800 provides almost 10 iPhone 8 charges, 6.5 Samsung Galaxy S8 charges or multiple charges for almost all tablets and other USB devices. This set lifespan is due to the nature of the chemical reactions happening at the anode and cathode, thin layers of insulating atoms are created, obstructing the effectiveness of the electrodes. Most manufacturers give an estimate and it’s usually between 300 and 1,500 charge cycles. If you’re looking for a real word number we suggest 500 cycles as a figure to expect from any of the power banks in our top 8 list. Bottom Line

The essential buying point for power banks is a very simple one: size. Sure, there are other features that we’ll look at in a moment, but your first decision will be what kind of power bank size are you looking for. We divide banks up into three main classes: Small (2500-3000 mAh) A big benefit of choosing USB PD powerbanks is that if you have an iPhone X or iPhone 8 or iPhone 8 plus, the USB PD powerbanks will also fast charge your iPhone X/8/ 8 Plus. USB PD powerbanks will also fast charge all Samsung phones (S9/S8/Note 9/Note 8) as well.Those of you who are on a budget should consider Yelomin and its power bank models since most of its offerings, including the solar power bank mentioned in this article, are quite affordable. Most power banks now use a USB-C port to recharge, although some models will have a micro-USB port as well to ensure compatibility with older chargers. Don’t worry if you don’t have the required cable, as one will usually be provided in the box. The Anker Prime series of Power Banks, including the Anker Prime 27,650mAh Power Bank (250W) and the Anker Prime 20,000mAh Power Bank (200W), are for people who truly love to geek out on power banks. If you came looking for the absolute best power bank you can buy, this is the best we've tried. You can buy the Tylt Bottle with just a power bank attached, but our review sample from AT&T had the full wireless charging treatment. It's easy to set up a phone to charge while studying, working out, or working away from home: all places we take a water bottle and need a full phone battery. At night time, the power bank will be used for charging iPhone X, iPhone 8, and also a very low power Bluetooth headset Schuberth SC1 Advanced Bluetooth headset (I have a feeling this headset draws less that 1amp when charging, as I am currently struggling to make my existing power bank stay on, without automatically turning off because it thinks the unit is charged due to low power demand). Possibly a camera too, and might be nice to be able to charge a MacBook or iPad too, but this is not critical.

Nominal Voltage: “The midpoint between full charged and fully discharged based on a 0.2C discharge”. For a lithium-ion cell, this is typically 3.7V.We expect this competition will heat up next year as more power bank makers catch up and make faster charging batteries. Until then, Anker is the dominant brand, and if you want the best it's an easy choice. How many times can my power bank charge my phone? In fact, our testing confirms what battery makers usually claim. A battery maker will claim between 60% and 70% efficiency, so that 10,000mAh battery will only give your phone around 6,000mAh of extra battery charge, at the least. In practice we find around 65% efficiency, though occasionally we can do even better. If you’re looking for a monster charger, then this is it. With a massive 26,800 mAh, this RAVPower device should be more than enough to get you through a week in the wilderness with your smartphone. And there’s three USB ports, so you can charge up to three devices simultaneously, perfect for family trips. There are a total of four ports on this Charmast power bank and what’s even more impressive is that it makes use of two fast charging technologies. Three USB-A Ports

The Anker Nano is only 5,000mAh, but that doesn't mean it can fully charge a 5,000mAh phone battery like you'll find in the Galaxy S23 Ultra. Power banks are about 60-70% efficient, depending on the phone's technology, so this power bank is good for charging an iPhone 15 to nearly full, but that big Ultra will only get about 65% charge. Anker Powercore+ 26800 PD is a good choice and it can be charged perfectly well with the Optimate O100 2.4 Amp USB charger using an USB to USB C cable. PowerCore 26800 PD can withdraw a maximum of 3 amp current over regular 5V USB but will charge fine at lower current as well such as with the O100 or any other such charger. There are also cool additional features to consider. Our favorite power bank has a built in charging plug so it can go right into a wall outlet. Some power banks have data about your charging devices. Some are just super small and cute. Which power bank is the best quality? Not to be confused with Anker’s lineup, similarly-named Aukey also sells power banks, including this incredibly versatile 20,000 mAh model. Unlike nearly every model in this lineup, which need to be charged via USB-C, the Aukey PB-Y14 can be charged with a micro USB, USB-C or even a Lightning cable.

The best power banks we have tried have all come from Anker, but that doesn't mean Anker is the only brand you should consider. All of the power banks on this list passed our testing, traveling with us on the road and powering our devices at home. Anker is the best, but these batteries from Baseus and Otterbox performed well. Best For: Those looking to carry a power bank only as an emergency measure to be used every now and again. Those who perhaps might need a top up before going from work to a night out perhaps. Medium (from 3500- 10000 mAh) You're trying to keep it simple: The Baseus Airpow doesn't have any built in wires or wireless charging, so you'll need to carry extras when it's time to power up.

Offer up to 87/60 watt USB-C PD charging for Macbook Pros/Airs and Dell/HP/Microsoft/Lenovo laptops You don't need all those extras: The Anker Prime power bank is pricey, and if you don't care about monitoring charge Wattage or days of battery life, find another option. You need fast power: This is a very slow charger, whether wired or wireless, so it's better for casual charging while you sip your water and read a book.

Our recommendations

There is one exception. After 30 or so partial charges, you should allow lithium-ion batteries to almost completely discharge. Repeated partial discharges create what is known as a digital memory, decreasing the accuracy of the device’s power gauge. The full drain then a full charge will allow the power gauge to be recalibrated. I don’t use my power bank often, how should I store it? Basically, you’re trying to balance four factors: size, speed, capacity and price. The rules are simple enough: the less you spend, the lower the capacity and the slower the power bank will charge.