Charging time depends on which iPad you own and what charger you use

An iPad takes between 2 and 4 hours to charge fully from empty, depending on the model and the power adapter you plug in. Newer iPads with USB-C charge faster than older models with Lightning connectors. A 20-watt charger takes roughly twice as long as a 35-watt charger on the same iPad. If you use a lower-wattage charger — say, a 5-watt phone charger — the same iPad can take 8 to 10 hours or longer.

The battery size matters too. A standard iPad (10th generation) has a smaller battery than an iPad Pro, so it charges faster in absolute time even with the same charger. An iPad Air sits in the middle. Knowing your specific model and charger wattage tells you what to expect.

Key Takeaways

  • Most iPads charge fully in 2 to 4 hours with the charger that came in the box, though some newer models can finish in under 2 hours with a higher-wattage adapter.
  • USB-C iPads (iPad Pro 2018 and later, iPad Air 2022 and later, iPad 7th generation and later) charge faster than Lightning iPads because USB-C supports higher power delivery.
  • Using a charger with lower wattage than your iPad supports will extend charging time significantly — a 5-watt charger can take three times as long as a 35-watt charger.
  • Charging speed slows down as the battery approaches 100 percent, so the last 20 percent of charge takes longer than the first 20 percent.
  • Leaving your iPad plugged in after it reaches 100 percent does not damage the battery, but charging from 20 to 80 percent and then unplugging extends overall battery lifespan.

Charging times for current iPad models

The iPad (10th generation, 2022) charges in about 3 hours with its included 20-watt USB-C charger. The iPad Air (6th generation, 2024) takes roughly 2.5 hours with a 35-watt charger. The iPad Pro 11-inch (7th generation, 2024) can charge in under 2 hours with a 35-watt charger, though Apple rates it at 2 to 3 hours for typical use.

Older iPad models with Lightning connectors charge more slowly. An iPad Air (5th generation, 2022) with a Lightning port takes 3 to 4 hours with a 20-watt charger. An iPad mini (6th generation, 2021) also takes 3 to 4 hours. If you own an iPad from 2017 or earlier, it likely has a Lightning port and a smaller battery, so it may charge in 2 to 3 hours with a 12-watt charger — but that charger is no longer sold new by Apple.

These times assume you are using the charger Apple included or a charger with matching or higher wattage. Using a lower-wattage charger will extend the time significantly.

Why charger wattage makes such a big difference

iPad batteries accept power at different rates depending on the charger's wattage. A 20-watt charger delivers 20 watts of power; a 35-watt charger delivers 35 watts. The iPad's charging circuit accepts as much power as the charger can provide, up to the iPad's maximum. A higher-wattage charger fills the battery faster because it is pushing more energy in per minute.

If you use a 5-watt charger (the kind that came with older iPhones), your iPad will charge much more slowly because the charger is limited to 5 watts. The iPad will accept that 5 watts, but it takes much longer to fill a large battery at that rate. A standard iPad with a 5-watt charger can take 8 to 10 hours or more. This is why using the correct charger matters.

Apple sells USB-C chargers in 20-watt, 35-watt, and higher wattages. Any of these will work with any USB-C iPad, but a higher-wattage charger will charge faster. You do not need to buy a higher-wattage charger if the included one works for you, but if you want to charge faster, upgrading to 35 watts is the practical choice for most iPads.

How battery size affects charging speed

A larger battery takes longer to charge than a smaller battery, even with the same charger. An iPad Pro 12.9-inch has a much larger battery than an iPad Air, so it takes longer to fill completely. However, the iPad Pro also supports higher-wattage chargers, which partially offsets the larger capacity.

Think of it like filling a pool: a larger pool takes longer to fill than a smaller pool, but a wider hose fills it faster. The iPad Pro is the larger pool with a wider hose. The standard iPad is the smaller pool with a narrower hose. Both reach full capacity in a reasonable time, but the math is different.

If you compare an iPad Air and a standard iPad with the same charger, the standard iPad will finish first because its battery is smaller. If you compare an iPad Air and an iPad Pro with chargers matched to each model's capability, the iPad Pro may finish first despite its larger battery because it supports higher wattage.

Why the last 20 percent takes longer than the first 20 percent

All lithium-ion batteries (the kind in iPads) charge slower as they approach full capacity. This is intentional — it protects the battery from damage. When your iPad is at 20 percent, the charger pushes power in at the maximum rate. When it reaches 80 percent, the charger automatically reduces the power to slow the charge. By the time you hit 95 percent, the power is much lower.

This is why the battery percentage climbs quickly at first and then slows down near the end. If you are watching the percentage on screen, you will notice it jumps from 0 to 50 percent in the first hour, then crawls from 80 to 100 percent in the next hour. This is normal and protects your battery's long-term health.

If you want to charge faster, unplug at 80 percent and use your iPad. You will get most of the charge in much less time, and your battery will last longer overall because you are not regularly pushing it to 100 percent.

Charging while using your iPad slows it down

If you use your iPad while it is charging — watching video, browsing, or running apps — the charging time will extend. The charger has to power both the device and the battery at the same time, so less power goes into the battery itself. A task that uses the processor heavily, like gaming or video editing, will slow charging noticeably.

Light use like reading or email has a smaller effect. Leaving the iPad idle while charging is fastest. If you need to use your iPad and want it charged by a specific time, start charging earlier than you think you will need to.

Charging also slows if your iPad gets warm. If the device is in direct sunlight or in a warm case while charging, the battery management system will reduce charging speed to prevent overheating. Remove the case and move the iPad to a cooler spot if you notice it is warm during charging.

What to do if your iPad is charging very slowly

If your iPad is taking much longer than expected, check the charger first. Look at the wattage printed on the power adapter — it should say 20W, 35W, or higher. If it says 5W or 10W, you are using a low-power charger. Switch to the charger that came with your iPad or buy a matching USB-C charger from Apple or a certified third-party maker.

Next, check the cable. A damaged or worn USB-C cable can reduce charging speed. If the cable is bent, frayed, or does not fit snugly in the port, try a different cable. Apple's USB-C cables are durable, but third-party cables vary in quality.

Remove any case or cover while charging, especially if it is thick or made of rubber. Cases trap heat, which slows charging. Also move your iPad away from direct sunlight and warm surfaces.

If you have tried a different charger, cable, and location and the iPad still charges very slowly, the battery or charging circuit may be failing. Contact Apple Support or visit an Apple Store to have the device checked.

Frequently Asked Questions

Can I use any USB-C charger with my iPad?

Any USB-C charger will work with a USB-C iPad, but the wattage matters for speed. A 20-watt charger works fine, but a 35-watt charger will charge faster. Avoid very low-wattage chargers (under 10 watts) because they will charge slowly. Third-party chargers are fine as long as they are certified and in good condition.

Is it bad to leave my iPad plugged in overnight?

No. Modern iPads stop charging once they reach 100 percent and stay at that level without damage. However, if you want to maximize battery lifespan over years, unplugging at 80 percent and avoiding regular 100 percent charges is better. For everyday use, overnight charging is safe and convenient.

Why does my iPad charge faster with some chargers than others?

Chargers have different wattages. A 35-watt charger delivers more power per minute than a 20-watt charger, so the battery fills faster. Your iPad accepts as much power as the charger provides, up to its maximum. Check the wattage printed on the adapter to see what you are using.

Does iPad charging speed change in cold weather?

Yes. Lithium-ion batteries charge more slowly in cold temperatures. If your iPad is cold, let it warm to room temperature before charging for normal speed. Charging a very cold iPad may trigger a warning that charging is paused until the device warms up. This is a safety feature and does not harm the battery.

Should I buy a higher-wattage charger to charge faster?

Only if you want noticeably faster charging and have the budget. A 35-watt charger will charge most iPads in 1 to 2 hours instead of 2 to 4 hours. The charger that came with your iPad is adequate for daily use. Higher wattage is useful if you charge multiple devices or need to top up quickly.