Bests & Worsts Reviews from Amazon

Hey there fellow nerds and non-nerds! I used a Drok USB Ammeter/Voltmeter... DROK USB 2.0 Digital Multimeter, Ammeter Voltmeter Capacitance & Watt Meter, 7 Modes Multi Tester, DC 3A 12V Amp Voltage Power Meter, Charging System Tester, Fast Charging and Data Sync Dual USB Ports ... to compare this Anker 2-Port USB charger against three other 5V USB chargers, tested back-to-back, while under the heavy load of an iPad 3 showing its battery at a 14% state of charge. The Anker outperformed the other three chargers, maintaining a slightly higher than 5V output (at 5.16V) - which helps to overcome a 5V battery's internal resistance, especially as it approaches 100% charge - topping it off - while essentially matching the current delivered by the Apple iPad 3 charger (2.02 Amps vs. 2.03 Amps), but offering two USB ports instead of only one. Nice! Note that simultaneously charging an iPhone 6s with the Anker’s 2nd USB port had no impact on the measurements taken while charging the iPad 3 on the 1st port. In other words, the Anker's two USB ports appear to be independent - one port is not "weakened" in either amps or volts when the other port is also in use. Nice!