diff --git a/src/ec/starlabs/merlin/variants/apl/ecdefs.h b/src/ec/starlabs/merlin/variants/apl/ecdefs.h
index 1057da83ff..bb791bc9dc 100644
--- a/src/ec/starlabs/merlin/variants/apl/ecdefs.h
+++ b/src/ec/starlabs/merlin/variants/apl/ecdefs.h
@@ -20,7 +20,7 @@
 #define ECRAM_KBL_TIMEOUT	0x1a
 #define ECRAM_FN_LOCK_STATE	0x2c
 #define ECRAM_FN_CTRL_REVERSE	0x2d
-#define ECRAM_MAX_CHARGE	0x46
+#define ECRAM_MAX_CHARGE	dead_code_t(uint8_t)
 #define ECRAM_FAN_MODE		dead_code_t(uint8_t)
 
 #endif
diff --git a/src/ec/starlabs/merlin/variants/glk/ecdefs.h b/src/ec/starlabs/merlin/variants/glk/ecdefs.h
index b09ffc76f0..7407267041 100644
--- a/src/ec/starlabs/merlin/variants/glk/ecdefs.h
+++ b/src/ec/starlabs/merlin/variants/glk/ecdefs.h
@@ -20,7 +20,7 @@
 #define ECRAM_KBL_TIMEOUT	0x1a
 #define ECRAM_FN_LOCK_STATE	0x2c
 #define ECRAM_FN_CTRL_REVERSE	0x2d
-#define ECRAM_MAX_CHARGE	0x46
+#define ECRAM_MAX_CHARGE	dead_code_t(uint8_t)
 #define ECRAM_FAN_MODE		dead_code_t(uint8_t)
 
 #endif
diff --git a/src/ec/starlabs/merlin/variants/kbl/ecdefs.h b/src/ec/starlabs/merlin/variants/kbl/ecdefs.h
index 36cd0207ab..af771c4613 100644
--- a/src/ec/starlabs/merlin/variants/kbl/ecdefs.h
+++ b/src/ec/starlabs/merlin/variants/kbl/ecdefs.h
@@ -18,6 +18,6 @@
 #define ECRAM_FN_LOCK_STATE	0x2c
 #define ECRAM_FAN_MODE		0x42
 #define ECRAM_FN_CTRL_REVERSE	0x43
-#define ECRAM_MAX_CHARGE	0xff /* TODO: Add */
+#define ECRAM_MAX_CHARGE	dead_code_t(uint8_t)
 
 #endif