snprintf(buf_bat_percentage, sizeof(buf_bat_percentage), "%d%%", battery_state.percentage);
if(battery_state.state == BATTERY_FULL) {
strcpy(buf_bat_time, "Full");
snprintf(buf_bat_percentage, sizeof(buf_bat_percentage), "%d%%", battery_state.percentage);
if(battery_state.state == BATTERY_FULL) {
strcpy(buf_bat_time, "Full");