From d4b1824b1c66606310c07d70707e15c937c3aef4 Mon Sep 17 00:00:00 2001
From: pelgraine <140762863+pelgraine@users.noreply.github.com>
Date: Sun, 15 Feb 2026 19:33:19 +1100
Subject: [PATCH] using different HAS_BQ27220 for renderbatteryindicator

---
 examples/companion_radio/ui-new/UITask.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/examples/companion_radio/ui-new/UITask.cpp b/examples/companion_radio/ui-new/UITask.cpp
index 69d4e4cd..2f4cdde4 100644
--- a/examples/companion_radio/ui-new/UITask.cpp
+++ b/examples/companion_radio/ui-new/UITask.cpp
@@ -118,8 +118,12 @@ class HomeScreen : public UIScreen {
 
 
 void renderBatteryIndicator(DisplayDriver& display, uint16_t batteryMilliVolts, int* outIconX = nullptr) {
-    // Use voltage-based estimation to match BLE app readings
     uint8_t batteryPercentage = 0;
+#if HAS_BQ27220
+    // Use fuel gauge SOC directly — accurate across the full discharge curve
+    batteryPercentage = board.getBatteryPercent();
+#else
+    // Fallback: voltage-based linear estimation for boards without fuel gauge
     if (batteryMilliVolts > 0) {
       const int minMilliVolts = 3000;
       const int maxMilliVolts = 4200;
@@ -128,6 +132,7 @@ void renderBatteryIndicator(DisplayDriver& display, uint16_t batteryMilliVolts,
       if (pct > 100) pct = 100;
       batteryPercentage = (uint8_t)pct;
     }
+#endif
 
     display.setColor(DisplayDriver::GREEN);