Anker PowerCore 10000, One of the Smallest and Lightest 10000mAh External Batteries, Ultra-Compact, High-speed Charging Technology Power Bank for iPhone X/ 8/7, Samsung Galaxy and More (Black)
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The dummy load test yielded just an 82% efficiency, while phone charging tests delivered a remarkable 86% efficiency.
Designed with both 180 lm and 45 lm flashlight modes as well as an SOS mode to give you multiple lighting options for any situation. The PowerCore II Slim did quite a bit better in this metric, improving considerably on its performance in the previous metric and earning a 7 out of 10.Over the past 6 years, we've tested more than 35 of the best portable chargers to bring you this selection of the 13 most promising options available today. Take, for example, Anker 737 Power Bank (PowerCore 24K), featuring a massive 24,000mAh battery capacity, 2× longer-lasting battery life, and blazing-fast 140W charging—powera 16-inch MacBook Pro up to 50% in just 40 minutes! Because of its wireless-only, it wasn't possible to directly test the charging efficiency of the Apple MagSafe Battery Pack on our multimeter.
To gauge convenience, we considered supplementary features, functions, and extras that either enhanced the ease of use or distinguished these devices in any way.In his spare time he games on the rig he built himself, collects Nintendo amiibos, and tries his hand at publishing a novel. To activate, press the power button twice or press and hold for 2 seconds until the LED indicator turns green. If the preceding portable batteries fall short of your device's power demands, then consider the Mophie Powerstation XXL 20000.