diff --git a/core/settings/config.go b/core/settings/config.go
index 9b7bd5ae0..7e9c63d08 100644
--- a/core/settings/config.go
+++ b/core/settings/config.go
@@ -3,6 +3,7 @@ package settings
 import (
 	"encoding/json"
 	"errors"
+	"sync"
 	"time"
 
 	"github.com/evcc-io/evcc/util"
@@ -13,15 +14,18 @@ import (
 var _ Settings = (*ConfigSettings)(nil)
 
 type ConfigSettings struct {
+	mu   sync.Mutex
 	log  *util.Logger
 	conf *config.Config
 }
 
 func NewConfigSettingsAdapter(log *util.Logger, conf *config.Config) *ConfigSettings {
-	return &ConfigSettings{log, conf}
+	return &ConfigSettings{log: log, conf: conf}
 }
 
 func (s *ConfigSettings) get(key string) (any, error) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
 	val := s.conf.Named().Other[key]
 	if val == nil {
 		return nil, errors.New("not found")
@@ -29,10 +33,13 @@ func (s *ConfigSettings) get(key string) (any, error) {
 	return val, nil
 }
 
+// TODO remove broken error handling when settings api is retired
 func (s *ConfigSettings) set(key string, val any) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
 	data := s.conf.Named().Other
 	data[key] = val
-	if err := s.conf.PartialUpdate(data); err != nil {
+	if err := s.conf.Update(data); err != nil {
 		s.log.ERROR.Println(err)
 	}
 }
diff --git a/server/http_config_loadpoint_handler.go b/server/http_config_loadpoint_handler.go
index 16e7dc6c3..c235c3811 100644
--- a/server/http_config_loadpoint_handler.go
+++ b/server/http_config_loadpoint_handler.go
@@ -6,6 +6,7 @@ import (
 	"net/http"
 	"strconv"
 
+	"dario.cat/mergo"
 	"github.com/evcc-io/evcc/core"
 	"github.com/evcc-io/evcc/core/loadpoint"
 	coresettings "github.com/evcc-io/evcc/core/settings"
@@ -194,8 +195,6 @@ func updateLoadpointHandler() http.HandlerFunc {
 			return
 		}
 
-		instance := dev.Instance()
-
 		dynamic, static, err := loadpointSplitConfig(r.Body)
 		if err != nil {
 			jsonError(w, http.StatusBadRequest, err)
@@ -203,7 +202,17 @@ func updateLoadpointHandler() http.HandlerFunc {
 		}
 
 		// static
-		if err := configurable.PartialUpdate(static, instance); err != nil {
+
+		// merge here to maintain dynamic part of the config
+		other := configurable.Config().Other
+		if err := mergo.Merge(&other, static); err != nil {
+			jsonError(w, http.StatusBadRequest, err)
+			return
+		}
+
+		instance := dev.Instance()
+
+		if err := configurable.Update(other, instance); err != nil {
 			jsonError(w, http.StatusBadRequest, err)
 			return
 		}
diff --git a/util/config/config.go b/util/config/config.go
index 74916fc12..8e8617135 100644
--- a/util/config/config.go
+++ b/util/config/config.go
@@ -6,7 +6,6 @@ import (
 	"strconv"
 	"strings"
 
-	"dario.cat/mergo"
 	"github.com/evcc-io/evcc/util/templates"
 	"gorm.io/gorm"
 )
@@ -58,22 +57,6 @@ func (d *Config) Update(conf map[string]any) error {
 	})
 }
 
-// PartialUpdate partially updates a config's details to the database
-func (d *Config) PartialUpdate(conf map[string]any) error {
-	return db.Transaction(func(tx *gorm.DB) error {
-		var config Config
-		if err := tx.Where(Config{Class: d.Class, ID: d.ID}).First(&config).Error; err != nil {
-			return err
-		}
-
-		if err := mergo.Merge(&d.Data, conf, mergo.WithOverride); err != nil {
-			return err
-		}
-
-		return tx.Save(&d).Error
-	})
-}
-
 // Delete deletes a config from the database
 func (d *Config) Delete() error {
 	return db.Delete(Config{ID: d.ID}).Error
diff --git a/util/config/device.go b/util/config/device.go
index 8d60b1b5f..d37d05dff 100644
--- a/util/config/device.go
+++ b/util/config/device.go
@@ -8,7 +8,6 @@ type ConfigurableDevice[T any] interface {
 	Device[T]
 	ID() int
 	Update(map[string]any, T) error
-	PartialUpdate(map[string]any, T) error
 	Delete() error
 }
 
@@ -36,14 +35,6 @@ func (d *configurableDevice[T]) ID() int {
 	return d.config.ID
 }
 
-// func (d *configurableDevice[T]) Assign(instance T) {
-// 	d.instance = instance
-// }
-
-//	func (d *configurableDevice[T]) Update(config map[string]any) error {
-//		return d.config.Update(config)
-//	}
-
 func (d *configurableDevice[T]) Update(config map[string]any, instance T) error {
 	if err := d.config.Update(config); err != nil {
 		return err
@@ -52,14 +43,6 @@ func (d *configurableDevice[T]) Update(config map[string]any, instance T) error
 	return nil
 }
 
-func (d *configurableDevice[T]) PartialUpdate(config map[string]any, instance T) error {
-	if err := d.config.PartialUpdate(config); err != nil {
-		return err
-	}
-	d.instance = instance
-	return nil
-}
-
 func (d *configurableDevice[T]) Delete() error {
 	return d.config.Delete()
 }
diff --git a/util/config/types.go b/util/config/types.go
index 4af9e13b7..1d27474ba 100644
--- a/util/config/types.go
+++ b/util/config/types.go
@@ -6,13 +6,13 @@ import (
 
 type Typed struct {
 	Type  string         `json:"type"`
-	Other map[string]any `mapstructure:",remain" yaml:",inline"`
+	Other map[string]any `mapstructure:",remain" yaml:",inline"` // TODO JSON serialization
 }
 
 type Named struct {
 	Name  string         `json:"name"`
 	Type  string         `json:"type"`
-	Other map[string]any `mapstructure:",remain" yaml:",inline"`
+	Other map[string]any `mapstructure:",remain" yaml:",inline"` // TODO JSON serialization
 }
 
 // Property returns the value of the named property