Battery - red cross, no boot on 5.4

My battery is weak, that is a fact.
I had noticed that when the capacity was ca 50% my Dell could act unstable, meaning slowed down a bit, yet a simple reboot did the trick.

Now the battery is ca 28% capacity.
Yesterday I updated Manjaro KDE, today I updated W 10 as I dual-boot.

All of a sudden I am unable to go past the Manjaro logo, I cannot see the login stage when on Kernel 5.4

When I reboot and choose the Kernal 4.4 I am able to see my desktop however it is acting weird - the Firefox seems faster than ever but the rest of my programmes loads very long.

The battery icon is there but with a Red Cross addition.
I cannot remove the battery myself as this requires removing the back of my Dell the professional way [sighs]

I guess there is a fix, isn’t there? Beside getting a new battery…

[estudio@Dell ~]$ inxi --admin --verbosity=7 --filter --no-host
System: Kernel: 4.4.243-1-MANJARO x86_64 bits: 64 compiler: gcc v: 10.2.0
parameters: BOOT_IMAGE=/boot/vmlinuz-4.4-x86_64 root=UUID=3a63b7ba-0224-4eab-a2df-01dec97b0ba2 rw quiet
Desktop: KDE Plasma 5.20.3 tk: Qt 5.15.1 wm: kwin_x11 dm: SDDM Distro: Manjaro Linux
Machine: Type: Portable System: Dell product: Vostro 14-5459 v: 1.0.4 serial: Chassis: type: 8
Mobo: Dell model: 01KK0Y v: A00 serial: UEFI: Dell v: 1.0.4 date: 01/07/2016
Battery: ID-1: BAT0 charge: 7.5 Wh condition: 12.8/44.5 Wh (29%) volts: 11.8/11.4 model: SIMPLO Dell
type: Li-ion serial: status: Discharging
Memory: RAM: total: 7.69 GiB used: 1.15 GiB (15.0%)
RAM Report: permissions: Unable to run dmidecode. Root privileges required.
CPU: Info: Dual Core model: Intel Core i7-6500U bits: 64 type: MT MCP arch: Skylake family: 6
model-id: 4E (78) stepping: 3 microcode: E2 L2 cache: 4096 KiB bogomips: 20743
Speed: 637 MHz min/max: 400/3100 MHz Core speeds (MHz): 1: 637 2: 500 3: 500 4: 643
Flags: 3dnowprefetch abm acpi adx aes aperfmperf apic arat arch_perfmon avx avx2 bmi1 bmi2 bts clflush
clflushopt cmov constant_tsc cx16 cx8 de ds_cpl dtes64 dtherm dts epb ept erms est f16c flexpriority
flush_l1d fma fpu fsgsbase fxsr ht hwp hwp_act_window hwp_epp hwp_notify ibpb ibrs ida intel_pt invpcid
invpcid_single kaiser lahf_lm lm mca mce md_clear mmx monitor movbe mpx msr mtrr nonstop_tsc nopl nx
pae pat pbe pcid pclmulqdq pdcm pdpe1gb pebs pge pln pni popcnt pse pse36 pts rdrand rdseed rdtscp
rep_good sdbg sep smap smep ss ssbd sse sse2 sse4_1 sse4_2 ssse3 stibp syscall tm tm2 tpr_shadow tsc
tsc_adjust tsc_deadline_timer vme vmx vnmi vpid x2apic xgetbv1 xsave xsavec xsaveopt xtopology xtpr
Vulnerabilities: Type: itlb_multihit status: Processor vulnerable
Type: l1tf mitigation: PTE Inversion
Type: mds mitigation: Clear CPU buffers; SMT vulnerable
Type: meltdown mitigation: PTI
Type: spec_store_bypass mitigation: Speculative Store Bypass disabled via prctl and seccomp
Type: spectre_v1 mitigation: usercopy/swapgs barriers and __user pointer sanitization
Type: spectre_v2
mitigation: Full generic retpoline, IBPB: conditional, IBRS_FW, STIBP: conditional, RSB filling
Type: srbds mitigation: Microcode
Type: tsx_async_abort status: Not affected
Graphics: Device-1: Intel Skylake GT2 [HD Graphics 520] vendor: Dell driver: i915 v: kernel bus ID: 00:02.0
chip ID: 8086:1916
Device-2: NVIDIA GM108M [GeForce 930M] driver: N/A bus ID: 01:00.0 chip ID: 10de:1346
Device-3: Sunplus Innovation Integrated_Webcam_HD type: USB driver: uvcvideo bus ID: 1-7:5
chip ID: 1bcf:2b90
Display: x11 server: X.Org 1.20.9 compositor: kwin_x11 driver: intel display ID: :0 screens: 1
Screen-1: 0 s-res: 1920x1080 s-dpi: 96 s-size: 508x285mm (20.0x11.2") s-diag: 582mm (22.9")
Monitor-1: eDP1 res: 1920x1080 hz: 60 dpi: 157 size: 310x170mm (12.2x6.7") diag: 354mm (13.9")
OpenGL: renderer: llvmpipe (LLVM 11.0.0 256 bits) v: 4.5 Mesa 20.2.2 compat-v: 3.1 direct render: Yes
Audio: Device-1: Intel Sunrise Point-LP HD Audio vendor: Dell driver: snd_hda_intel v: kernel bus ID: 00:1f.3
chip ID: 8086:9d70
Sound Server: ALSA v: k4.4.243-1-MANJARO
Network: Device-1: Intel Wireless 3165 driver: iwlwifi v: kernel port: f040 bus ID: 02:00.0 chip ID: 8086:3165
IF: wlp2s0 state: down mac:
Device-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet driver: r8169 v: 2.3LK-NAPI port: d000
bus ID: 03:00.0 chip ID: 10ec:8168
IF: enp3s0 state: up speed: 100 Mbps duplex: full mac:
IP v4: type: dynamic noprefixroute scope: global broadcast:
IP v6: type: noprefixroute scope: link
Drives: Local Storage: total: 232.89 GiB used: 97.07 GiB (41.7%)
ID-1: /dev/sda vendor: Crucial model: CT250MX200SSD1 size: 232.89 GiB block size: physical: 4096 B
logical: 512 B speed: 6.0 Gb/s serial: rev: MU03 scheme: GPT
SMART Message: Unknown smartctl error. Unable to get data.
Message: No Optical or Floppy data was found.
RAID: Message: No RAID data was found.
Partition: ID-1: / raw size: 29.30 GiB size: 28.71 GiB (98.00%) used: 24.22 GiB (84.3%) fs: ext4
block size: 4096 B dev: /dev/sda6 label: N/A uuid: 3a63b7ba-0224-4eab-a2df-01dec97b0ba2
ID-2: /boot/efi raw size: 350.0 MiB size: 346.0 MiB (98.86%) used: 27.5 MiB (7.9%) fs: vfat
block size: 512 B dev: /dev/sda1 label: SYSTEM uuid: AE1A-2136
ID-3: /run/media/estudio/Data raw size: 104.50 GiB size: 104.50 GiB (100.00%) used: 22.22 GiB (21.3%)
fs: ntfs block size: 4096 B dev: /dev/sda5 label: Data uuid: B020E07320E041C8
ID-4: /run/media/estudio/Windows raw size: 98.09 GiB size: 98.09 GiB (100.00%) used: 50.60 GiB (51.6%)
fs: ntfs block size: 4096 B dev: /dev/sda3 label: Windows uuid: 20881E62881E36AE
Swap: Alert: No Swap data was found.
Unmounted: ID-1: /dev/sda2 size: 128.0 MiB fs: <superuser/root required> label: N/A uuid: N/A
ID-2: /dev/sda4 size: 544.0 MiB fs: ntfs label: N/A uuid: 40E6D1B6E6D1AD02
USB: Hub: 1-0:1 info: Full speed (or root) Hub ports: 12 rev: 2.0 speed: 480 Mb/s chip ID: 1d6b:0002
Device-1: 1-3:2 info: Logitech Unifying Receiver type: Keyboard,Mouse,HID
driver: logitech-djreceiver,usbhid interfaces: 3 rev: 2.0 speed: 12 Mb/s chip ID: 046d:c52b
Device-2: 1-5:3 info: Validity Sensors VFS5011 Fingerprint Reader type: driver: N/A
interfaces: 1 rev: 1.1 speed: 12 Mb/s chip ID: 138a:0011 serial:
Device-3: 1-6:4 info: Intel Bluetooth wireless interface type: Bluetooth driver: btusb interfaces: 2
rev: 2.0 speed: 12 Mb/s chip ID: 8087:0a2a
Device-4: 1-7:5 info: Sunplus Innovation Integrated_Webcam_HD type: Video driver: uvcvideo
interfaces: 2 rev: 2.0 speed: 480 Mb/s chip ID: 1bcf:2b90
Hub: 2-0:1 info: Full speed (or root) Hub ports: 6 rev: 3.0 speed: 5 Gb/s chip ID: 1d6b:0003
Sensors: System Temperatures: cpu: 42.0 C mobo: 27.8 C
Fan Speeds (RPM): cpu: 0
Info: Processes: 146 Uptime: 23m Init: systemd v: 246 Compilers: gcc: 10.2.0 clang: 11.0.0 Packages:
pacman: 1841 lib: 473 flatpak: 0 Shell: Bash v: 5.0.18 running in: konsole inxi: 3.1.08
[estudio@Dell ~]$

I have temporarily fixed the issue by disabling the battery Adaptive Mode in BIOS and changing it to Primarily AC Power.