Using a lower-rated power supply on an iPad will charge it very slowly and do progressive damage to the battery.Using a higher-rated power supply on an iPhone won't damage it or charge it any faster.All of my devices charge, none of them have been damaged. They all get charged off the same power pack - a 12W (5V, 2.4A) power block that came with my iPad 4.
There's nothing wrong with doing this as a once-off, for emergencies, or on an irregular basis, but you will do progressive damage to your device if you keep doing this.Īt home I have an iPhone 4, 4s, 5 and iPad 4. You saw it a lot in the original Nokia USB-charging phones - the batteries died after a few years and would no longer maintain charge. Yes, this will damage your battery over time. The battery will be discharging power at almost the same rate at which it is charging. You've heard of "trickle charge" right? This is where the current being fed into the internal battery isn't actually enough to properly charge the battery. Experiment for yourself: plug a new iPad 4 into an old USB 1.0 or 2.0 port overnight and see how much charge you've gained in the morning. In fact, it may appear not to be charging at all. Your device will take a LOT longer to charge. On the other hand, if you put a higher-rated device on a lower-rated charger you will get the following results:
The charger will not force the little electrons into the device any faster than it can handle. A higher-rated power supply will NOT damage your device, because the device will only draw as much current (amps) as it needs. You will NOT charge your device any faster. If you use a higher rated power supply you will STILL pull the same amount of amps/watts but it will no longer be the maximum amount the charger can put out. If you are using the EXACT right charger (same voltage and ampage as the device) then it will draw the maximum amps/watts available. Two things limit the charging time of your device: If you use a 10W, you'll pull the SAME amount of amps (still 1A), and with a 12W.do you get the point yet? When using a 5W power supply to charge an iPhone, you will be drawing the maximum current available (1A). For the sake of argument, let's ignore the voltage because it's not really relevant to this discussion (seeing as all the chargers give out 5V). The wattage also states the MAXIMUM output of the power block.Īll three chargers have the same voltage output (5V), the difference comes with the amp output (1A, 2A and 2.4A). The wattage is made up of two variables - voltage and ampage (or amperage if you're American). The Apple Thunderbolt 3 (USB-C) Cable has a Thunderbolt symbol to distinguish it from a USB-C cable.The 5W, 10W and 12W chargers are all capable of charging an iPhone.
APPLE MAC IPAD WHAT CHARGER PRO
These iPad Pro models don't support Thunderbolt displays such as the 2016 LG UltraFine 5K Display.Ģ. Some USB-C displays can also charge your iPad while it's connected.ġ. iPad Pro 11-inch (1st and 2nd generation) and iPad Pro 12.9-inch (3rd and 4th generation) support the 2019 LG UltraFine 5K Display at 4K resolution with video, audio, data, and power. Your iPad matches the frame rate and dynamic range of currently playing content when you turn on Allow Display Mode Changes. You can switch between SDR and HDR modes by going to Settings > Display & Brightness and selecting your connected display. Your iPad also supports high-dynamic-range USB-C displays that use the HDR10 standard. To connect your iPad to high-resolution displays, use a USB-C cable that supports high-bandwidth connections, such as the cable included with the display, the Belkin USB-C to USB-C Cable, or the Apple Thunderbolt 3 (USB-C) Cable (sold separately).
IPad Pro 11-inch (3rd generation) and iPad Pro 12.9-inch (5th generation) also support Thunderbolt displays.