Short answer: an iPad is not a scaled-up iPhone, and the habits you built on your phone will mislead you in three specific places — the battery, multitasking, and the settings list. None of them is a defect. They are just different machines.
The battery is bigger, not slower to age
An iPad battery is physically much larger than an iPhone's. That buys you longer runtime per charge, and it is why an iPad can sit in a bag for a week and still turn on.
It does not buy you slower ageing. A lithium-ion battery loses capacity through the same three mechanisms regardless of size:
- Heat — the dominant factor on both devices
- Time spent at full charge — a large battery left plugged in at 100% is still held at high voltage
- Charge cycles — one cycle is a full discharge, however many sessions it takes
A large battery has more capacity to lose, so a 40Wh iPad battery and a 15Wh iPhone battery can lose the *same percentage* under the same conditions.
The part that actually trips people up
iPadOS has no Battery Health screen. On iPhone you can go to Settings → Battery → Battery Health & Charging and read a maximum capacity percentage, a peak performance line, and — on recent models — a cycle count.
On iPad, that screen does not exist. There is no percentage to check, no cycle count, and no "Service" threshold that iPadOS will surface to you. This is the single biggest difference in day-to-day battery life between the two, because the most common iPhone advice has nowhere to land on an iPad.
If you need a real number on an iPad, it takes a diagnostic — Apple Support or an authorised service provider — rather than a settings screen. In the meantime, judge by behaviour, the same way you would judge heat: does it drain noticeably faster than it used to, and does it shut down early under load?
Multitasking is where the load actually goes
An iPhone runs one app on screen. An iPad can run several: Split View, Slide Over, and on recent models Stage Manager with resizable, overlapping windows.
That changes where power and heat come from:
| iPhone | iPad | |
|---|---|---|
| Typical heavy load | One demanding app (games, camera) | Several apps live at once |
| Screen | Always the largest single draw | Still large, but shared with more background work |
| Heat source | Often charging + one app | Often several active apps + charging |
| What "close the app" means | Ends the task | May only hide one of several live apps |
So the iPhone instinct — "close everything I am not using" — is both more useful and less obvious on an iPad, because a background window is still a running app rather than a suspended one. If an iPad feels warm or drains fast with the screen off, the first thing to check is how many apps are genuinely live, not how bright the screen is.
The same applies to the keyboard case and Apple Pencil: they are additional power draws that have no iPhone equivalent, and a Pencil left attached to a charging iPad is another load on the same battery.
Settings that exist on one device and not the other
| Setting | iPhone | iPad |
|---|---|---|
| Battery Health & Charging | Yes | No — not exposed at all |
| Cycle count | Yes (recent models) | No |
| Low Power Mode | Yes | Yes (behaves similarly) |
| Cellular data options | Yes | Only on cellular models |
| Stage Manager | No | Yes (supported models) |
| Apple Pencil settings | No | Yes |
| External keyboard / trackpad | Limited | Yes, first-class |
Two consequences worth internalising:
- Advice aimed at cellular settings is dead weight on a Wi-Fi iPad. Turning off 5G, picking an LTE band, or managing data roaming all presuppose a modem that a Wi-Fi-only iPad does not have.
- Advice aimed at the battery health screen is dead weight on every iPad. There is no equivalent screen to open.
Which iPhone habits survive the move
They transfer:
- Brightness down, Auto-Lock short — the screen is still the largest single consumer
- Avoid heat, especially while charging — the mechanism is identical
- Don't leave it at 100% on a charger for days — high voltage is high voltage
- Trim background activity for apps that do not need it — it is a smaller lever than the screen, but it is real
They do not transfer:
- "Check your battery health first" — there is no such screen on iPad; you have to go through a diagnostic
- "Turn off 5G" — meaningless on a Wi-Fi-only iPad
- "My iPhone charges with this cable, so it is fine" — an iPad, especially a Pro, draws considerably more power. A small phone charger will charge it very slowly rather than not at all, which is easy to mistake for a fault
- "Force-quitting everything is pointless" — true on iPhone; on iPad with several live windows it is a more meaningful move
For the underlying battery mechanics — what the capacity percentage actually measures and why 80% is the published line on iPhone — see Battery Health Explained. For the general habits that work on both, see iPhone Battery Saving.