From a49ee6ebe9b8215bb4aeb7ddc5c39a2c5d94127d Mon Sep 17 00:00:00 2001
From: liamcottle <liam@liamcottle.com>
Date: Mon, 11 May 2026 22:17:53 +1200
Subject: [PATCH] fix battery voltage reading

---
 variants/lilygo_t_impulse_plus/TImpulsePlusBoard.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/variants/lilygo_t_impulse_plus/TImpulsePlusBoard.h b/variants/lilygo_t_impulse_plus/TImpulsePlusBoard.h
index 4ed7292e..3e799bd9 100644
--- a/variants/lilygo_t_impulse_plus/TImpulsePlusBoard.h
+++ b/variants/lilygo_t_impulse_plus/TImpulsePlusBoard.h
@@ -33,7 +33,7 @@ public:
     // read battery voltage
     int adcvalue = 0;
     analogReadResolution(12);
-    analogReference(AR_INTERNAL);
+    analogReference(AR_INTERNAL_3_0);
     delay(10);
     adcvalue = analogRead(BATTERY_ADC_DATA);