(i'm using debian 13 on a dell pro max 16 laptop, but i suspect this question applies to any linux distro that supports battery charging configuration.) read recently that i shouldn't keep my laptop plugged in and maxed out at 100% charge perpetually since that allegedly reduces the life of the battery. so i read that i can play with the settings for battery charging under /sys/class/power_supply/BAT0: -rw-r--r-- 1 root root 4096 Dec 1 10:21 alarm -r--r--r-- 1 root root 4096 Nov 27 04:29 capacity -r--r--r-- 1 root root 4096 Dec 1 10:21 capacity_level -rw-r--r-- 1 root root 4096 Dec 1 10:19 charge_control_end_threshold -rw-r--r-- 1 root root 4096 Dec 1 10:19 charge_control_start_threshold -r--r--r-- 1 root root 4096 Nov 27 04:29 charge_full -r--r--r-- 1 root root 4096 Nov 27 04:29 charge_full_design -r--r--r-- 1 root root 4096 Nov 27 04:29 charge_now -rw-r--r-- 1 root root 4096 Dec 1 10:21 charge_types -r--r--r-- 1 root root 4096 Nov 27 04:29 current_now -r--r--r-- 1 root root 4096 Nov 27 04:29 cycle_count lrwxrwxrwx 1 root root 0 Nov 27 04:29 device -> ../../../PNP0C0A:00 -r--r--r-- 1 root root 4096 Dec 1 10:21 eppid drwxr-xr-x 3 root root 0 Nov 27 04:29 hwmon0 -r--r--r-- 1 root root 4096 Nov 27 04:29 manufacturer -r--r--r-- 1 root root 4096 Nov 27 04:29 model_name drwxr-xr-x 2 root root 0 Dec 1 10:21 power -r--r--r-- 1 root root 4096 Nov 27 04:29 present -r--r--r-- 1 root root 4096 Nov 27 04:29 serial_number -r--r--r-- 1 root root 4096 Nov 27 04:29 status lrwxrwxrwx 1 root root 0 Nov 27 04:29 subsystem -> ../../../../../../class/power_supply -r--r--r-- 1 root root 4096 Nov 27 04:29 technology -r--r--r-- 1 root root 4096 Nov 27 04:29 temp -r--r--r-- 1 root root 4096 Nov 27 04:29 type -rw-r--r-- 1 root root 4096 Nov 27 04:29 uevent -r--r--r-- 1 root root 4096 Nov 27 04:29 voltage_min_design -r--r--r-- 1 root root 4096 Nov 27 04:29 voltage_now as i read it, what i'm interested in are those early "start" and "end" threshold variables which are, respectively, on my system: $ cat *start* 75 $ cat *end* 80 as i read it, that defines a very narrow window such that, if the battery charge drops to 75%, it will start charging, and it will stop charging once it reaches 80%. in other words, if i leave the laptop plugged in the whole time, battery charge will bounce back and forth between 75% and 80%, am i reading that correctly? i ask since, with those values, my battery was at 82%, i plugged in the laptop, and it proceeded to charge .. 83% ... 84% ... not what i expected. am i missing some other config setting, perhaps one that activates that feature? rday To unsubscribe send a blank message to linux+unsubscribe [ at ] linux-ottawa [ dot ] org To get help send a blank message to linux+help [ at ] linux-ottawa [ dot ] org To visit the archives: https://lists.linux-ottawa.org