You can use the USB-C PD port to recharge your power bank, and so you can recharge at the same speed, this is the best part of Power Delivery power banks. 2. Recharge with 30W Power Delivery wall charger

Anker PowerCore Solar 20000, 18W USB-C Power Bank 20,000 mAh

The following graphs show the differences between the manufacturer’s specified energy density (Wh), energy consumed during recharging, and energy delivered by the USB-C port for the Anker PowerCore Solar 20000 and Nitecore NB20000. Chart comparing Anker PowerCore Solar 20000 specified, consumed, and delivered energy, in watt-hours. Chart comparing Nitecore NB20000 specified, consumed, and delivered energy, in watt-hours. 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. On the NB20000 I tested, the USB-C input-only port was dead, which didn’t seem to affect any test results. It’s hard to say if Nitecore has consistent quality problems based on a sample size of only two units. Selection advice The specified internal battery capacity of 10,000 mAh class PBCs differed by as much as 8%: Specified energy density in watt-hours per kilogram for each 10,000 mAh class PBC. Longer is better.

Which is the right power bank for you?

Overnight recharging an iPhone wasted a significant amount of energy on every PBC tested. It’s best to unplug your iPhone after a couple of hours. Chart comparing energy wasted by overnight recharging of an iPhone as a percentage of total capacity. Lower numbers are better. Table 11: Low Power Overnight Smartphone Charging – Anker PowerCore 10000 PD Redux and Nitecore NB10000 name On the other hand, using PBC low power mode overnight wasted barely any energy: Chart comparing energy wasted by overnight recharging of earbuds using low power mode. Lower numbers are better. Evaluating cold performance of PBCs Table 13: Cold Storage Performance – Anker PowerCore 10000 PD Redux and Nitecore NB10000 name Tables from the BatteryBench test results can be found scattered throughout the rest of the article in the relevant sections. Table 5: Basic Measurements of Anker PowerCore 10000 PD Redux and Nitecore NB10000 name

Anker CompatibilityList - Anker

What You Get: Anker 325 Power Bank (PowerCore 20K) / PowerCore Essential 20000, Micro USB cable, welcome guide, our worry-free 18-month warranty, and friendly customer service. (USB-C cable, Lightning cable, and wall charger not included) Solar charging is subject to sunlight intensity and panel conversion rate, so it may take several days to recharge PowerCore. We recommend recharging PowerCore to 100% before traveling. At one hour before solar noon, uncover and set up the PBC facing due south, tilted at an angle that places the solar panel perpendicular to the sun.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. Far better is to get a huge solar panel and just a regular 20000 - actually the 26800 with dual input is a good match, or to give up on solar and just carry more Powercore instead.