diff --git a/API Server/internal/plugins/builtin/ankersolix/modbus.go b/API Server/internal/plugins/builtin/ankersolix/modbus.go
index 43baf35..cd1b728 100644
--- a/API Server/internal/plugins/builtin/ankersolix/modbus.go	
+++ b/API Server/internal/plugins/builtin/ankersolix/modbus.go	
@@ -65,8 +65,8 @@ const (
 	regSolarBalancing = 20090
 	regCPVoltage      = 20091
 	regCPSignal       = 20092
-	regRelay1Temp     = 20093 // INT16, degC
-	regRelay2Temp     = 20094 // INT16, degC
+	regRelay1Temp     = 20093 // INT16, decidegC — see decodeLive on the gain
+	regRelay2Temp     = 20094 // INT16, decidegC
 	regBoostMode      = 20095
 	regLEDBrightness  = 20096 // %
 	regChargingStatus = 20097 // same 0-8 enum as the cloud's operating_state
@@ -171,8 +171,8 @@ type ModbusSnapshot struct {
 	CPSignal       *int   `json:"cpSignal,omitempty"`
 	CPSignalDesc   string `json:"cpSignalDesc,omitempty"`
 
-	Relay1TempC *int `json:"relay1TempC,omitempty"`
-	Relay2TempC *int `json:"relay2TempC,omitempty"`
+	Relay1TempC *float64 `json:"relay1TempC,omitempty"`
+	Relay2TempC *float64 `json:"relay2TempC,omitempty"`
 
 	OcppStatus     *int   `json:"ocppStatus,omitempty"`
 	OcppStatusDesc string `json:"ocppStatusDesc,omitempty"`
@@ -271,13 +271,19 @@ func decodeLive(snap *ModbusSnapshot, regs []uint16) {
 		b := v != 0
 		return &b
 	}
-	degrees := func(addr int) *int {
+	// The spec's gain column says 1 for the two relay temperatures, but a charger
+	// idling with nothing plugged in reads 331 and 319 there, which is a gain of
+	// 10 and not a pair of relays at 331 °C. The same table gives the maximum
+	// current setting in watts and the timeout in amps, so its unit and gain
+	// columns are not load-bearing; the LED brightness two registers earlier
+	// reads exactly 100 at gain 1, which is what fixes the alignment.
+	degrees := func(addr int) *float64 {
 		v, ok := at(addr)
 		if !ok {
 			return nil
 		}
-		n := int(int16(v)) // signed: the relays can read below zero
-		return &n
+		c := float64(int16(v)) / 10 // signed: the relays can read below zero
+		return &c
 	}
 
 	snap.VoltageL1 = scaled(regVoltageL1N, 10)
diff --git a/API Server/internal/plugins/builtin/ankersolix/modbus_test.go b/API Server/internal/plugins/builtin/ankersolix/modbus_test.go
index 06cae86..1b863c6 100644
--- a/API Server/internal/plugins/builtin/ankersolix/modbus_test.go	
+++ b/API Server/internal/plugins/builtin/ankersolix/modbus_test.go	
@@ -106,18 +106,19 @@ func TestDecodeLiveNamesStates(t *testing.T) {
 
 func TestDecodeLiveReadsNegativeTemperatures(t *testing.T) {
 	b := newLiveBlock()
-	below := int16(-7)
+	below := int16(-72)
 	b.set(regRelay1Temp, uint16(below))
-	b.set(regRelay2Temp, 41)
+	// 331 is what an idle charger actually reports: 33.1 °C, not 331 °C.
+	b.set(regRelay2Temp, 331)
 
 	var snap ModbusSnapshot
 	decodeLive(&snap, b)
 
-	if snap.Relay1TempC == nil || *snap.Relay1TempC != -7 {
-		t.Errorf("Relay1TempC = %v, want -7", snap.Relay1TempC)
+	if snap.Relay1TempC == nil || *snap.Relay1TempC != -7.2 {
+		t.Errorf("Relay1TempC = %v, want -7.2", snap.Relay1TempC)
 	}
-	if snap.Relay2TempC == nil || *snap.Relay2TempC != 41 {
-		t.Errorf("Relay2TempC = %v, want 41", snap.Relay2TempC)
+	if snap.Relay2TempC == nil || *snap.Relay2TempC != 33.1 {
+		t.Errorf("Relay2TempC = %v, want 33.1", snap.Relay2TempC)
 	}
 }