问题：在/sys/class/power_supply/BAT0/capacityLXDE lxpanel 电池监视器中，电池容量始终显示为 100%，即使并非如此。
软件信息：
- 操作系统：Debian Buster
- 内核：4.19（也尝试向后移植 5.10，结果相同）
intel-microcode,firmware-linux（带有非自由固件）已安装
电池信息：
- 型号：AC14B8K
- 制造商: LGC
额外信息：
- BIOS 已经很长时间没有更新了（但是我想避免这种情况，因为这需要 Windows）
- 当执行
apt upgrade这些可能缺少的固件模块时，会弹出（即使安装了 realtek 固件）：
W: Possible missing firmware /lib/firmware/rtl_nic/rtl8125b-2.fw for module r8169
W: Possible missing firmware /lib/firmware/rtl_nic/rtl8125a-3.fw for module r8169
W: Possible missing firmware /lib/firmware/rtl_nic/rtl8168fp-3.fw for module r8169
W: Possible missing firmware /lib/firmware/i915/skl_huc_2.0.0.bin for module i915
W: Possible missing firmware /lib/firmware/i915/skl_guc_33.0.0.bin for module i915
W: Possible missing firmware /lib/firmware/i915/bxt_huc_2.0.0.bin for module i915
W: Possible missing firmware /lib/firmware/i915/bxt_guc_33.0.0.bin for module i915
W: Possible missing firmware /lib/firmware/i915/kbl_huc_4.0.0.bin for module i915
W: Possible missing firmware /lib/firmware/i915/kbl_guc_33.0.0.bin for module i915
W: Possible missing firmware /lib/firmware/i915/glk_huc_4.0.0.bin for module i915
W: Possible missing firmware /lib/firmware/i915/glk_guc_33.0.0.bin for module i915
W: Possible missing firmware /lib/firmware/i915/kbl_huc_4.0.0.bin for module i915
W: Possible missing firmware /lib/firmware/i915/kbl_guc_33.0.0.bin for module i915
W: Possible missing firmware /lib/firmware/i915/cml_huc_4.0.0.bin for module i915
W: Possible missing firmware /lib/firmware/i915/cml_guc_33.0.0.bin for module i915
W: Possible missing firmware /lib/firmware/i915/icl_huc_9.0.0.bin for module i915
W: Possible missing firmware /lib/firmware/i915/icl_guc_33.0.0.bin for module i915
W: Possible missing firmware /lib/firmware/i915/ehl_huc_9.0.0.bin for module i915
W: Possible missing firmware /lib/firmware/i915/ehl_guc_33.0.4.bin for module i915
W: Possible missing firmware /lib/firmware/i915/tgl_huc_7.5.0.bin for module i915
W: Possible missing firmware /lib/firmware/i915/tgl_guc_35.2.0.bin for module i915
W: Possible missing firmware /lib/firmware/i915/tgl_huc_7.5.0.bin for module i915
W: Possible missing firmware /lib/firmware/i915/tgl_guc_35.2.0.bin for module i915
W: Possible missing firmware /lib/firmware/i915/icl_dmc_ver1_09.bin for module i915
W: Possible missing firmware /lib/firmware/i915/tgl_dmc_ver2_08.bin for module i915
W: Possible missing firmware /lib/firmware/i915/rkl_dmc_ver2_02.bin for module i915
（但我认为这与我的问题无关）
我该怎么做才能获得正确的电池容量？我应该安装其他固件吗？