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Idhu

Member

Registered: 2026-10-15

Posts: 14

[SOLVED]Laptop won't turn on unless its charging.

I have a laptop acer nitro anv15-41
it doesn't shutdown when i take the charger away so it isn't the battery.

Last edited by Idhu (2026-10-16 15:32:46)

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 78,379

Re: [SOLVED]Laptop won't turn on unless its charging.

"Won't turn on" also isn't the OS…

Without AC plugged in:

tail -n1000 /sys/class/power_supply/BAT0/*

Chances are that the unbacked battery is so degraded that it doesn't provide enough voltage for a spike when powering on.

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Idhu

Member

Registered: 2026-10-15

Posts: 14

Re: [SOLVED]Laptop won't turn on unless its charging.

"Won't turn on" also isn't the OS…

Without AC plugged in:

tail -n1000 /sys/class/power_supply/BAT0/*

Chances are that the unbacked battery is so degraded that it doesn't provide enough voltage for a spike when powering on.

Return from

tail -n1000 /sys/class/power_supply/BAT1/*

is

==> /sys/class/power_supply/BAT1/alarm <==
300000

==> /sys/class/power_supply/BAT1/capacity <==
100

==> /sys/class/power_supply/BAT1/capacity_level <==
Full

==> /sys/class/power_supply/BAT1/charge_full <==
3272000

==> /sys/class/power_supply/BAT1/charge_full_design <==
3815000

==> /sys/class/power_supply/BAT1/charge_now <==
3272000

==> /sys/class/power_supply/BAT1/current_now <==
304000

==> /sys/class/power_supply/BAT1/cycle_count <==
0

==> /sys/class/power_supply/BAT1/device <==
tail: error reading '/sys/class/power_supply/BAT1/device': Is a directory

==> /sys/class/power_supply/BAT1/extensions <==
tail: error reading '/sys/class/power_supply/BAT1/extensions': Is a directory

==> /sys/class/power_supply/BAT1/hwmon2 <==
tail: error reading '/sys/class/power_supply/BAT1/hwmon2': Is a directory

==> /sys/class/power_supply/BAT1/manufacturer <==
SIMPLO

==> /sys/class/power_supply/BAT1/model_name <==
AP18E7M

==> /sys/class/power_supply/BAT1/power <==
tail: error reading '/sys/class/power_supply/BAT1/power': Is a directory

==> /sys/class/power_supply/BAT1/present <==
1

==> /sys/class/power_supply/BAT1/serial_number <==
10332

==> /sys/class/power_supply/BAT1/status <==
Full

==> /sys/class/power_supply/BAT1/subsystem <==
tail: error reading '/sys/class/power_supply/BAT1/subsystem': Is a directory

==> /sys/class/power_supply/BAT1/technology <==
Li-ion

==> /sys/class/power_supply/BAT1/type <==
Battery

==> /sys/class/power_supply/BAT1/uevent <==
DEVTYPE=power_supply
POWER_SUPPLY_NAME=BAT1
POWER_SUPPLY_TYPE=Battery
POWER_SUPPLY_STATUS=Full
POWER_SUPPLY_PRESENT=1
POWER_SUPPLY_TECHNOLOGY=Li-ion
POWER_SUPPLY_CYCLE_COUNT=0
POWER_SUPPLY_VOLTAGE_MIN_DESIGN=15400000
POWER_SUPPLY_VOLTAGE_NOW=17162000
POWER_SUPPLY_CURRENT_NOW=304000
POWER_SUPPLY_CHARGE_FULL_DESIGN=3815000
POWER_SUPPLY_CHARGE_FULL=3272000
POWER_SUPPLY_CHARGE_NOW=3272000
POWER_SUPPLY_CAPACITY=100
POWER_SUPPLY_CAPACITY_LEVEL=Full
POWER_SUPPLY_TYPE=Battery
POWER_SUPPLY_MODEL_NAME=AP18E7M
POWER_SUPPLY_MANUFACTURER=SIMPLO
POWER_SUPPLY_SERIAL_NUMBER=10332

==> /sys/class/power_supply/BAT1/voltage_min_design <==
15400000

==> /sys/class/power_supply/BAT1/voltage_now <==
17162000

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 78,379

Re: [SOLVED]Laptop won't turn on unless its charging.

That battery is at 85% (might be protection mode) and looks fine - why is it BAT1? What about BAT0 ?

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Idhu

Member

Registered: 2026-10-15

Posts: 14

Re: [SOLVED]Laptop won't turn on unless its charging.

There is no BAT0

Idhu

Member

Registered: 2026-10-15

Posts: 14

Re: [SOLVED]Laptop won't turn on unless its charging.

If it is relevant i have a dualboot with windows

Idhu

Member

Registered: 2026-10-15

Posts: 14

Re: [SOLVED]Laptop won't turn on unless its charging.

I think i fixed it.
I did a full power cicle and it works now.

Last edited by Idhu (2026-10-15 12:11:24)

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 78,379

Re: [SOLVED]Laptop won't turn on unless its charging.

If it is relevant i have a dualboot with windows

Generally yes, see the 3rd link below. Mandatory.
Disable it (it's NOT the BIOS setting!) and reboot windows and linux twice for voodo reasons.

But I don't really think this would result in the system not even powering up w/o AC

Is this the original battery or a replacement?
How old is it?
Are you limiting it (to 85% for health preservation)? Can you unlimit it for a test?
Are there traces of another battery in the system journal?
F5ck

Last edited by seth (2026-10-15 12:46:39)

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Idhu

Member

Registered: 2026-10-15

Posts: 14

Re: [SOLVED]Laptop won't turn on unless its charging.

I don't know it's second hand,
It isn't limited now , nor at the moment of the post, but it was charging after being limited (I unlimited it minutes before)