This Amazon Basics External Battery Is Currently on Sale for 67% Off.
Woot has reduced the price of the Amazon Basics 20,000mAh portable charger in black from $38.99 to $12.99, significantly cheaper than the $34.85 currently listed elsewhere . Prime members also get free standard shipping (everyone else pays $6), but keep in mind that Woot does not ship to Alaska, Hawaii, PO Boxes, or APO addresses.
For this price, you get a fairly roomy backup battery measuring 4.48 x 2.83 x 1.16 inches, making it compact enough to fit in a backpack or bag, though its 0.77-pound weight might make it a bit bulky for a jacket pocket. The tradeoff is a fairly generous 20,000 mAh capacity, which should be enough for several charges of the average smartphone, making it especially useful for hiking or long weekends when access to outlets is limited. And since you’ll likely be carrying more than just your phone on such trips, the charger features two USB-C ports and one USB-A port, allowing you to charge up to three devices simultaneously.
When used individually, either USB-C port can output up to 20W, enough to quickly charge many modern smartphones, while the USB-A port has a maximum output of 12W, making it more suitable for older devices and smaller accessories. However, when connecting two or three devices, the total output power drops to 15W, split between the ports, so charging all devices simultaneously will take longer than connecting each device individually. Both USB-C ports can also be used to recharge the power bank itself, which takes approximately 4.4 hours. A 30cm USB-C to USB-C cable is included for charging (data transfer is not supported).
Overall, those looking to charge a laptop will want a higher-power model, but for occasional travel, commuting, or keeping a phone running throughout a long day, the capacity and price are a reasonable combination.