Anker 737 features : Charges 3 devices at once | 2 USB-C ports | 1 USB-A port | 70% charge within 3 minutes | 24,000mAh battery So now you can be tension-free regarding the fast charge and a powerful, portable power bank. You have the luxury of using your smartphones with no worries about the charge, and use your gadgets without any interruptions. Physical Assessment: PBC weight and dimensions, evaluations of button and light usability, case design, and USB port quality. Charging time: Each power bank takes a different length of time to charge your device. I considered how long each power bank takes to charge devices, whether it is your cell phone, your laptop, or even your headphones.

Coming Soon: PowerCore Solar 20000 - Anker Community Coming Soon: PowerCore Solar 20000 - Anker Community

The following tables describe PBCs that meet the previously-stated criteria. Manufacturer specifications (below) were used to compute energy density (Wh/kg). Product availability is shown as of December 2021. Supply-chain issues and rapid product obsolescence are the primary reasons affecting product availability. Table 1: Potential 10,000 mAh class PBCs potential 10,000 mAh class PBCs The greatest need is water, followed by shelter, followed by food, then gadgets and a simple gadget is just a big Powercore. Emergency shelters you’d probably get within 24 hours so that’s how much power you should store, which for most people is about 10Ah per person to keep a phone going. Shargeek Storm 2 t ech Specs: Charges 3 devices at once | 2 USB-C ports | 1 USB port | 100% charge within 90 minutes After examining these four portable battery chargers with a comprehensive suite of tests, I know I could get enough data needed to make a good decision based on a limited BatteryBench protocol. The tests I would perform would be Physical Measurements, USB-A Power, USB-C Power, Delivered Energy, Recharge Time, and Drop Tests. Moreover, you could realistically complete that short list in about one day instead of 11. Learn more

Here are the PBCs that have been tested with BatteryBench and show the highest numbers that are here today – but might be gone tomorrow. Highest delivered energy density When this article was written, the Nitecore NB10000 and NB20000 portable battery chargers seemed to be the highest-performing models available, though they have had some issues. Testing isn’t that hard if you are determined to find the best PBC that meets your needs. Nitecore PBCs are lighter than Anker PBCs due primarily to the materials used (carbon fiber frame and panels on the Nitecore vs. plastic on the Anker): Chart comparing PBC weight in grams. Lower numbers are better. Once again, energy density almost doubled between the lowest and highest: Chart comparing specified energy density in watt-hours per kilogram for each 20,000 mAh class PBC. Higher numbers are better. Which PBCs were tested in this report?

Product: PowerCore Solar 20000 - Anker

As shown above, a higher PBC weight does not mean more delivered energy. However, those extra grams might add other features like ruggedness and lighting. Equipped with 2 USB Type-A output ports, the Anker PowerCore 20000 allows for efficient charging of multiple devices at the same time. The battery technology utilized in this power bank is Lithium Polymer (LiPo), which ensures long-lasting power and reliable performance. With a battery capacity of 20000 mAh, it offers sufficient power to keep devices charged for extended periods. Nitecore just released their Gen 2 10000 mAh charger lowering the weight from 5.3 oz to 5.29 oz. While I’d skip on the weight savings, maybe there’s some other improvements? Low Power Mode Overnight: How much energy does a low power mode waste overnight (e.g., recharging earbuds)?Don’t read too much into the charge-level lights of any portable battery charger. For example, during a Delivered Energy test, the Anker PowerCore Solar 20000 showed three glowing LEDs, indicating 75% energy available. In contrast, measurements showed only 50% left. Due to recharging inefficiencies, all the PBCs consumed more energy than the manufacturer specified. They also delivered less than specified energy due to power conversion losses.