Plus Plus Battery

PlusPlusBattery is a lightweight battery info and health estimation tool specifically tailored for OnePlus/Oppo/Realme devices (with universal device support). It provides real-time monitoring of battery status and can evaluate the Full Charge Capacity (FCC) and the uncompensated raw FCC and State of Health (SOH) of silicon-carbon anode batteries under specific conditions.

Features

・Real-time Battery Info: Displays current battery level, voltage, current, charge/discharge power with charts, and health status without root access.

・Battery Health Estimation: Calculates and records Full Charge Capacity only when the battery level is 100% and the battery current is within the range from 0 to 25 mA. This is used to estimate battery health and lifespan. Not a true value, just an estimation.

・Cycle Count History: Records the daily cycle count automatically or manually, and saves it locally using a Room database. Users can view it on the history page, and export it to csv files.

・Real-Time Battery Monitor: Show battery metrics in a customizable floating window or the notification area. Info entries can be customized.

・Root Mode: Requires root permission to read additional information.

・Current Remaining Capacity (Root Mode): Read from /sys/class/oplus_chg/battery/battery_rm. This value changes with battery level.

・Full Charge Capacity (battery_fcc) (Root Mode): Read from /sys/class/oplus_chg/battery/battery_fcc. This value fluctuates based on charging/discharging behavior.

・Raw Full Charge Capacity (Root Mode): Reverse-calculated uncompensated FCC. Silicon-carbon anode batteries typically apply algorithmic compensation based on undervoltage thresholds.

・Battery Health (battery_soh) (Root Mode): Read from /sys/class/oplus_chg/battery/battery_soh. This value fluctuates with usage.

・Raw Battery Health (Root Mode): Reverse-calculated uncompensated SOH. Compensation is usually applied in silicon-carbon batteries based on undervoltage thresholds.

・Battery Under-voltage Threshold (vbat_uv) (Root Mode): Read from /sys/class/oplus_chg/battery/vbat_uv. The device will shut down if the voltage drops below this threshold.

・Battery Serial Number (battery_sn) (Root Mode): Read from /sys/class/oplus_chg/battery/battery_sn.

・Battery Manufacture Date (battery_manu_date) (Root Mode): Read from /sys/class/oplus_chg/battery/battery_manu_date. ・ Qmax (batt_qmax) (Root Mode): Qmax refers to the chemical capacity of the battery. The value of this capacity is load independent. This is the capacity that can be released by a battery under very low load current, usually expressed in mAh. In the system, this value changes triggered by some conditions.

・Custom Entries (Root Mode): Customizable entries for universal devices, with default presets displaying charge cycles & fccs from generic linux power_supply files. You can also add any other readable path as you like. Users can also export/import custom profiles.

Experimental Features

・Get Battery Data from Logcat (Root Mode): For some devices, this app can extract battery related data from logcat. Currently supported devices include some OPlus, Moto and Xiaomi devices (limited support varies on models and systems)