Power Banks & External Batteries

It is hard to be more compact than this external battery for this capacity (20000Ah). With its highly resistant plastic body, the Allpowers 20000mAh powerbank is both robust and reliable, and is able to detect low amperage devices, which can be very convenient. Easily held in a pocket, this battery is able to charge two devices at the same time thanks to its 2 USB-A ports (total power 12W).

Our review:
Not looking good, with its two-tone plastic, we could have expected a powerbank of poor quality, but in our quest for the ultimate cheap external battery, this Allpowers brand model surprised us and won well against many other more expensive powerbanks. For a price of 20 euros, it was hard to believe for our team of testers, that a battery could combine quality, capacity and strength. As soon as we had it in our hands, we understood that this battery had met the challenge, for at least two of these criteria, namely those concerning its manufacturing quality. The whole thing is very well finished, and for having torture-tested 8 of these brave powerbanks (drops, high humidity, prolonged use over several weeks non-stop, etc.), these batteries are of surprising quality and durability. Sometimes simplicity does the job, and in this case it does, and we haven't been able to get rid of one of these external batteries. Congratulations to Allpowers, who once again offers us a very well finished product.
Bad point on the other hand, for the third point, namely capacity. Indeed, it immediately seemed strange to us that a battery of this format, particularly compact, could have a capacity of 20000mAh. After measurements, we arrive at a capacity of 12600mAh, which seems more coherent considering the dimensions of this device. Another negative point is that this powerbank is rather slow, both to recharge itself and to charge a smartphone. We didn't make any precise measurements, but that's the feeling we had, and we're far from the 4 hours to fully charge the device announced by the manufacturer... We could have been dissatisfied with such a difference between what the manufacturer says and the measurements / observations, but despite this lower capacity and relatively slow charging, this battery remains one of the best choices for this price range, compactness and quality.... Well protected (against short circuits, surges, overvoltages, overvoltages, high temperatures, etc.), this small powerbank is able to detect devices that consume very little energy, such as some Bluetooth headsets for example. This is the only one among more than twenty external batteries (all ranges combined) to have been able to maintain the charge for several weeks of another powerbank with''Always-On'' mode, the Voltaic V44 (this one regularly performing pings capable of''waking up'' the Allpowers battery in a way).
Other positive point that we have observed on this power bank which is, unfortunately, too rare on the others: its ability to charge while it is charging. Indeed, when you connect a device to the Allpowers, it will self-charge, while loading the device(s) that are connected to it. This allows with a single wall socket to potentially charge 3 devices, during the night for example (the charge is obviously very slow). According to our measurements, the priority is to self-charge (about 7W) while the charging of the devices is very slow (from 0.1 to 1W), but has the advantage of being done, unlike the majority of powerbanks who can only do one or the other (charge itself or load the device plugged in). Another good point for this small battery, which certainly does not keep its promises in terms of capacity, but which keeps many others.
Conclusion, for us, difficult to do better for this price.

Xiaomi, the world's 4th largest smartphone manufacturer, hits hard with its 20Ah capacity 2C external battery. Indeed, it is difficult to offer a powerbank with such a capacity, such a high quality of manufacture, fast (because it is Qualcomm QC3.0 compatible) for less than 30 euros. Yet this is what this sleek, white, matte finish battery offers, with two ports that can charge two devices simultaneously for a maximum power of 18V.
Compatible with most USB devices, the Mi 2C has an intelligent charging mode and is capable of charging low-current devices (trickle mode), like the Smartwatch Mi Band which consumes only 0.025A ! Capable of charging an iPhone 7 or 2.5 times an iPad Mini4, this power bank is of exemplary quality, which explains the users' enthusiasm for this device.

Are you looking for the most versatile external battery possible, while keeping a very tight budget? Look no further, it is the 10000mAh battery from Charmast that you are looking for. Very compact and lightweight, this power bank has a capacity of 10400mAh, i.e. enough to charge a Galaxy A10 three times for example. The connectivity of this battery is its main strength, with 2 different In ports (1 in micro USB format, the other in USB-C format) and 3 Out ports, including a 15W C type port. Very fast therefore, this powerbank also has a screen allowing you to easily and precisely know your battery level. So many advantages that it is surprising to see on a device of this price. So don't hesitate!