I am using the GL-XE3000 (Puli AX) mainly as a stationary 5G gateway. To extend the battery lifespan and prevent swelling/degradation due to constant 100% SoC and heat, I would love to see a "Battery Care Mode" in a future firmware update.
Requested Feature: An option in the Web Admin Panel to set a charging threshold (e.g., stop charging at 80% and start again at 70%).
Since the /sys/class/power_supply/ directory is empty and controlled via MCU, we as users cannot implement this via OpenWrt ourselves.
Many users in the community use this device in RVs or as a home backup where the device is plugged in 24/7. This feature would be a huge improvement for the longevity of the hardware.
If I recall correctly, the used battery type in the XE3000 isn't the one you need to take care of by just charging until 70%.
Afaik, it's fine to use it permanently plugged in. The reason why most batteries need a "care mode" is because they are used a lot - like using & recharging your phone every day. If you just use it with static power, nothing will happen.
It appears that the battery management MCU in the Puli AX does not support charge limiting, so we cannot implement this feature at the software level.
There's no need to worry about battery life, I suppose, since the MCU does support battery level detection. Once the battery is fully charged (or slightly discharged), the device enters the 'bypass' mode, where it stops charging the battery and powers the device directly from the power supply.
I assume there is no significant difference between charging to 80% and 100%. The key is whether the battery management chip can effectively protect the battery and support a bypass mode. Charging to 80% instead of 100% doesn't inherently protect the battery more; it simply represents a difference in capacity.
Some like this same logic applies to smartphones, limiting the charge to 80% only reduces the cycle wear by 20%, since smartphones are portable devices that undergo frequent charge cycles, this feature offers some marginal benefit for them.
There IS a significant difference in charging to 80% or 100%. The degradation is not linear and it increases at high soc and high voltage, this is the reason devices charge slowly past 80%.