MacBook Pro M5 Battery Draining Overnight in Dubai? Here is Why and How to Fix It
MacBook Pro M5 users in Dubai are waking up to 20-40% battery loss overnight with the lid closed. The cause is almost always DarkWake, Power Nap, or a background process preventing deep sleep. Most fixes take under 5 minutes and cost nothing. Battery replacement starts from AED 650 if the cell itself is at fault.
Why is my MacBook Pro M5 battery draining overnight?
A MacBook Pro M5 in genuine deep sleep loses 1% or less per hour. Losing 20-40% overnight means the machine never reached deep sleep. On the M5, there are four main causes:
- DarkWake: the M5 wakes briefly every few hours to check mail, push notifications, and iCloud sync, each wakeup burns battery if the network task takes longer than expected
- Power Nap: a macOS feature that keeps background tasks running even while the screen is off, this is enabled by default on the M5
- A process preventing sleep: video conferencing apps (Teams, Zoom), torrent clients, and some VPNs hold a sleep assertion that stops the M5 from entering its lowest power state
- ApplePMGR fault: Apple Community users on M5 report a kernel panic where PMP fails to come online within 30 seconds, this is a firmware-level sleep fault specific to early M5 units
Work through each fix below before concluding the battery cell is faulty. On a new M5, hardware battery faults are rare.
Step 1: How do I fix DarkWake battery drain on MacBook Pro M5?
DarkWake is the M5 briefly waking to handle network tasks. You can see it happening by running this in Terminal immediately after opening your lid in the morning:
pmset -g log | grep -i darkwake | tail -20
If you see multiple DarkWake events overnight, the machine woke repeatedly. To reduce DarkWake frequency:
- Disable Power Nap: System Settings, Battery, Options, uncheck "Enable Power Nap while on battery power"
- Disable Wake for Network Access: System Settings, General, AirDrop and Handoff, uncheck "Wake for network access"
- Turn off Find My network participation while sleeping: System Settings, Privacy and Security, Location Services, System Services, turn off "Networking and Wireless"
After making these changes, charge the M5 to 100%, note the percentage before closing the lid, and check again in the morning. Most M5 users see overnight drain drop from 20-40% to under 5% after disabling Power Nap alone.
Step 2: Does Power Nap cause MacBook Pro M5 battery drain overnight?
Power Nap is enabled by default on the M5. It allows the Mac to periodically wake in a low-power state to sync iCloud, update Mail, and receive Handoff notifications. On a reliable Wi-Fi network this works fine. On a congested network or with a large iCloud Photo library syncing, Power Nap can keep the M5 in a partial wake state for extended periods.
- iCloud Photos: if you recently set up the M5 or added a large batch of photos, iCloud Photos will sync overnight using Power Nap, this can drain 10-20% on a large library
- Mail: accounts set to push notifications wake the M5 more frequently than accounts set to fetch manually
- Spotlight indexing: a newly set-up M5 indexes its SSD for 48-72 hours. This task runs during Power Nap wakes and is the single biggest overnight drain on a brand-new machine
Wait 72 hours after initial setup before concluding the battery has a hardware fault. Spotlight and Photos indexing are the cause of most overnight drain complaints on new M5 units.
Step 3: How do I find what is draining my MacBook Pro M5 battery overnight?
To find what is holding a sleep assertion and preventing deep sleep:
- Open Terminal and run:
pmset -g assertions - Look for any entry under "PreventUserIdleSystemSleep" or "PreventSystemSleep"
- The process name next to the assertion is your culprit
| Process name | What it is | Fix |
|---|---|---|
| com.microsoft.teams2 | Microsoft Teams background agent | Quit Teams completely before closing lid (Cmd+Q, not red button) |
| zoom.us | Zoom meeting or background connection | Quit Zoom via Dock right-click, Quit |
| com.apple.backupd | Time Machine backup in progress | Let backup complete or pause in System Settings, General, Time Machine |
| mds_stores | Spotlight indexing | Normal on new setup, wait 72 hours |
| com.apple.cloudd | iCloud sync | Normal during initial sync, wait for sync to complete |
Step 4: Is there an SMC reset for MacBook Pro M5 overnight drain?
The M5 does not have an SMC chip or a traditional SMC reset. The equivalent on Apple Silicon is a full shutdown followed by a 30-second wait before powering on. This resets the power management controller state.
- Apple menu, Shut Down (not Sleep or Restart)
- Wait 30 seconds until the fan has fully stopped and all indicator lights are off
- Press power to turn on
This fixes a class of overnight drain on M5 where the power management controller gets stuck in a partial-wake state after a macOS update. Apple Community users report the ApplePMGR kernel panic ("PMP Failed to Come Online within 30 seconds") being resolved by this reset combined with a macOS Tahoe point update.
Also check Console (open Spotlight, type Console) for "Sleep Wake Failure" entries. More than two per night on an M5 confirms a firmware-level sleep regression, update macOS to the latest version.
Step 5: Does Dubai heat affect MacBook Pro M5 sleep battery drain?
Dubai ambient temperature at night (25-30°C indoors without AC) keeps the M5 battery at a higher temperature during sleep than in cooler climates. A warm battery self-discharges faster than a cool one, and the M5 cooling fan cannot run while the machine is in sleep, so heat builds in the chassis overnight on a desk in a warm room.
- Do not leave the M5 MacBook Pro on a cushion or bed overnight, the soft surface traps heat under the chassis and raises battery temperature by 5-8°C versus a hard desk
- In UAE summer (June to September), a closed MacBook Pro left in a room without AC overnight can sit at 35-40°C ambient, accelerating self-discharge rate by 15-20%
- Storing the M5 partially open (lid at 45 degrees) overnight is not recommended for security reasons, but if you need overnight cooling, place it on a hard surface with space beneath
MacBook Pro M5 vs M4: why overnight drain differs
| Factor | MacBook Pro M4 | MacBook Pro M5 |
|---|---|---|
| Neural Engine background tasks | Active during Power Nap, moderate drain | More aggressive ML scheduling on M5, higher drain if Power Nap on |
| DarkWake frequency | Every 2-4 hours on default settings | More frequent on macOS Tahoe early builds, update to latest |
| ApplePMGR sleep fault | Rare | Reported on M5 units running early Tahoe versions, patched in 26.2 |
| Battery capacity | 70 Wh (14-inch), 100 Wh (16-inch) | Same capacity, so percentage drain translates to same Wh lost |
How much does MacBook Pro M5 battery replacement cost in Dubai?
If overnight drain persists after all software fixes, and System Settings shows battery capacity below 90% on a new M5, the cell has a manufacturing defect and replacement is covered under warranty.
| Model | Our price (AED) | Apple Store (AED) | Notes |
|---|---|---|---|
| MacBook Pro M5 14-inch battery | AED 650 | AED 1,099 | 70 Wh cell, 12-month warranty, same-day |
| MacBook Pro M5 16-inch battery | AED 700 | AED 1,199 | 100 Wh cell, 12-month warranty, same-day |
MacBook Pro M5 repair Dubai full details
When is MacBook Pro M5 overnight drain a hardware fault?
If drain persists after every software fix above, and the battery health in System Settings shows normal capacity, the issue may be on the logic board rather than the battery cell. Signs of a board-level power fault:
- Console shows "Sleep Wake Failure in EFI" repeatedly, not just once
- The M5 is warm to the touch on the bottom case after 8 hours of sleep with no charging connected
- Battery drops to 0% overnight even when fully charged, and the machine requires holding power for 10 seconds to restart
Free diagnostic at our Dubai workshop. Board-level power management repair on M5 starts from AED 1,200. MacBook Pro repair Dubai
Frequently asked questions
- The most common cause is DarkWake or Power Nap preventing deep sleep. Open Terminal and run 'pmset -g assertions' to see what is holding a sleep assertion. On new M5 units, Spotlight indexing and iCloud Photos syncing during the first 72 hours after setup are the top causes. Disable Power Nap in System Settings, Battery, Options and check again the next morning.
- Yes. A battery at 30-35°C self-discharges faster than one at 20°C. In Dubai summer, rooms without overnight AC can sit at 28-32°C, which adds 5-10% extra drain compared to an air-conditioned environment. Keep the M5 on a hard flat surface in a cool room overnight for the lowest sleep drain.
- Yes, but the amount matters. Under 5% overnight (8 hours) is normal standby drain. 10-20% overnight indicates DarkWake or a background process is active. Over 30% overnight means the machine is not entering deep sleep at all and something is holding a sleep assertion, check with 'pmset -g assertions' in Terminal.
- For most M5 users, yes. Power Nap is the single biggest cause of overnight drain on M5 because the M5 Neural Engine is more aggressive than M4 in scheduling background ML tasks during Power Nap wakes. Disabling it in System Settings, Battery, Options reduces overnight drain by 15-25% for most users.
- A MacBook Pro M5 with Power Nap disabled, all sleep assertions cleared, and no rogue background processes should lose under 3-4% per 8 hours of sleep. Apple Silicon deep sleep is extremely efficient. More than 10% overnight indicates a software or configuration issue, not a hardware fault on a new machine.
- Yes, with Optimised Battery Charging enabled. System Settings, Battery, Battery Health, turn on Optimised Battery Charging. This stops the M5 charging above 80% until shortly before your usual wake time, reducing heat stress on the battery from sitting at 100% overnight. In Dubai summer, charging in an air-conditioned room is better than a warm bedroom.
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About the author
Memona is a senior macbook battery technician at MacBook Repair Dubai, Dubai's longest-running Apple-only repair workshop (since 2004). Personally signs the QC checklist on every job leaving the bench.