RHEL 8.4 battery threshold issue - BAT1 is not configurable

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Hello,
in our company (unfortunately) we had to migrate our Lenovo laptops from Fedora to RHEL8 Workstation. After small tweaks everything works except the Battery 1 (BAT1) threshold setting. OS sees two batteries (BAT0 and BAT1) but only BAT0 is configurable:

root:~# tlp-stat -b
--- TLP 1.2.2 --------------------------------------------


+++ ThinkPad Battery Status: BAT0 (Main / Internal)
/sys/class/power_supply/BAT0/manufacturer                   = LGC
/sys/class/power_supply/BAT0/model_name                     = 01AV489
/sys/class/power_supply/BAT0/cycle_count                    =     29
/sys/class/power_supply/BAT0/energy_full_design             =  23940 [mWh]
/sys/class/power_supply/BAT0/energy_full                    =  18590 [mWh]
/sys/class/power_supply/BAT0/energy_now                     =  12920 [mWh]
/sys/class/power_supply/BAT0/power_now                      =      0 [mW]
/sys/class/power_supply/BAT0/status                         = Unknown (threshold effective)

/sys/class/power_supply/BAT0/charge_start_threshold         =     60 [%]
/sys/class/power_supply/BAT0/charge_stop_threshold          =     80 [%]


+++ ThinkPad Battery Status: BAT1 (Ultrabay / Slice / Replaceable)
/sys/class/power_supply/BAT1/manufacturer                   = Celxpert
/sys/class/power_supply/BAT1/model_name                     = 01AV424
/sys/class/power_supply/BAT1/cycle_count                    =     58
/sys/class/power_supply/BAT1/energy_full_design             =  24050 [mWh]
/sys/class/power_supply/BAT1/energy_full                    =  20710 [mWh]
/sys/class/power_supply/BAT1/energy_now                     =  12340 [mWh]
/sys/class/power_supply/BAT1/power_now                      =      0 [mW]
/sys/class/power_supply/BAT1/status                         = Unknown (threshold effective)

/sys/class/power_supply/BAT1/charge_start_threshold         =     95 [%]
/sys/class/power_supply/BAT1/charge_stop_threshold          =     100 [%]

Error when trying to change values for BAT1:

root:~# echo 60 > /sys/class/power_supply/BAT1/charge_start_threshold 
-bash: echo: write error: No such device

According to this info:
TLP BAT1 kernel 4.18 issue
it is a bug in kernel 4.18. Is there any chance to get a fix in RHEL8 like in other Linux distributions?

root:~# cat /etc/redhat-release 
Red Hat Enterprise Linux release 8.4 (Ootpa)
root:~# uname -a
Linux xxx 4.18.0-305.7.1.el8_4.x86_64 #1 SMP Mon Jun 14 17:25:42 EDT 2021 x86_64 x86_64 x86_64 GNU/Linux
RG

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