diff --git a/main/battery.cpp b/main/battery.cpp
index d058eea..c55887f 100644
--- a/main/battery.cpp
+++ b/main/battery.cpp
@@ -88,6 +88,24 @@ float getBatteryPercentage(float batVoltage, BatteryCellType cellType)
         CURVE(2.80, 2.50, 2.5, 2.60)
         break;
     }
+    case BatteryCellType::BAK_25R:
+    {
+        const float expected_ah = 2.5;
+        if(cellVoltage > 4.15){
+            return 100;
+        }
+        CURVE(4.15, 4.06, 0, 0.25)
+        CURVE(4.06, 3.96, 0.25, 0.5)
+        CURVE(3.96, 3.88, 0.5, 0.75)
+        CURVE(3.88, 3.77, 0.75, 1)
+        CURVE(3.77, 3.68, 1, 1.25)
+        CURVE(3.68, 3.62, 1.25, 1.5)
+        CURVE(3.62, 3.56, 1.5, 1.75)
+        CURVE(3.56, 3.47, 1.75, 2)
+        CURVE(3.47, 3.31, 2, 2.25)
+        CURVE(3.31, 2.50, 2.25, 2.5)
+        break;
+    }
     }
     return 0.f;
 }
@@ -99,6 +117,7 @@ float getRemainingWattHours()
     if(BatteryCellType(settings.battery.cellType) == BatteryCellType::HG2) target_mah = 3000;
     if(BatteryCellType(settings.battery.cellType) == BatteryCellType::MH1) target_mah = 3200;
     if(BatteryCellType(settings.battery.cellType) == BatteryCellType::VTC5) target_mah = 2600;
+    if(BatteryCellType(settings.battery.cellType) == BatteryCellType::BAK_25R) target_mah = 2500;
 
     float avgVoltage = 0;
     for (auto &controller : controllers)