diff --git a/radio/src/gui/menu_model.cpp b/radio/src/gui/menu_model.cpp
index 90b8c251d..11a5500c3 100644
--- a/radio/src/gui/menu_model.cpp
+++ b/radio/src/gui/menu_model.cpp
@@ -5531,7 +5531,7 @@ void menuModelTelemetry(uint8_t event)
         lcd_putsLeft(y, (alarm==0 ? STR_LOWALARM : STR_CRITICALALARM));
         putsTelemetryChannel(TELEM_COL2, y, TELEM_RXBATT-1, g_model.rxBattAlarms[alarm], LEFT|attr);
         if (attr && (s_editMode>0 || p1valdiff)) {
-          g_model.rxBattAlarms[alarm] = checkIncDec(event, g_model.rxBattAlarms[alarm], 0, 255, EE_MODEL);
+          g_model.rxBattAlarms[alarm] = checkIncDec(event, g_model.rxBattAlarms[alarm], 0, 132, EE_MODEL);
         }
         break;
       }
diff --git a/radio/src/lcd.cpp b/radio/src/lcd.cpp
index 290a3c635..faf3b54fa 100644
--- a/radio/src/lcd.cpp
+++ b/radio/src/lcd.cpp
@@ -1217,7 +1217,7 @@ void putsTelemetryChannel(xcoord_t x, uint8_t y, uint8_t channel, lcdint_t val,
       break;
 #if defined(CPUARM)
     case TELEM_RXBATT-1:
-      val *= 5;
+      val = ((val*1320) + 127) / 255;
 #if LCD_W >= 212
       att |= PREC2;
 #else
diff --git a/radio/src/opentx.cpp b/radio/src/opentx.cpp
index c7376955a..000e02709 100644
--- a/radio/src/opentx.cpp
+++ b/radio/src/opentx.cpp
@@ -420,7 +420,7 @@ void modelDefault(uint8_t id)
 #if defined(PCBTARANIS)
   g_model.frsky.channels[0].ratio = 132;
   g_model.rxBattAlarms[0] = 0;
-  g_model.rxBattAlarms[1] = 86;
+  g_model.rxBattAlarms[1] = 43;
 #endif
 
 #if defined(MAVLINK)
@@ -1636,7 +1636,7 @@ PLAY_FUNCTION(playValue, uint8_t idx)
       break;
     case MIXSRC_FIRST_TELEM+TELEM_RXBATT-1:
       if (TELEMETRY_STREAMING()) {
-        PLAY_NUMBER(val/2, 1+UNIT_VOLTS, PREC1);
+        PLAY_NUMBER((val*132+127)/255, 1+UNIT_VOLTS, PREC1);
       }
       break;
 #endif
diff --git a/radio/src/telemetry/frsky.cpp b/radio/src/telemetry/frsky.cpp
index 0c9c124d9..51f123872 100644
--- a/radio/src/telemetry/frsky.cpp
+++ b/radio/src/telemetry/frsky.cpp
@@ -435,7 +435,7 @@ void telemetryInterrupt10ms()
       uint8_t channel = g_model.frsky.voltsSource;
 #if defined(CPUARM)
       if (channel == FRSKY_VOLTS_SOURCE_RXBATT) {
-        voltage = frskyData.analog[TELEM_ANA_RXBATT].value / 2;
+        voltage = ((frskyData.analog[TELEM_ANA_RXBATT].value * 132) + 127) / 255;
       }
       else if (channel <= FRSKY_VOLTS_SOURCE_A4) {
         voltage = applyChannelRatio(channel, frskyData.analog[channel].value) / 10;
diff --git a/radio/src/telemetry/frsky_sport.cpp b/radio/src/telemetry/frsky_sport.cpp
index 176aa8b95..ca1c55397 100644
--- a/radio/src/telemetry/frsky_sport.cpp
+++ b/radio/src/telemetry/frsky_sport.cpp
@@ -321,7 +321,7 @@ void frskySportProcessPacket(uint8_t *packet)
 #endif
       }
       else if (appId == BATT_ID) {
-        frskyData.analog[TELEM_ANA_RXBATT].set((SPORT_DATA_U32(packet)*132/255)/5, UNIT_VOLTS);
+        frskyData.analog[TELEM_ANA_RXBATT].set(SPORT_DATA_U8(packet), UNIT_VOLTS);
       }
       else if ((appId >> 8) == 0) {
         // The old FrSky IDs