diff --git a/db/migration/V044__deye_register_max_current_a.sql b/db/migration/V044__deye_register_max_current_a.sql
index 3c0c7e6..dfa14f6 100644
--- a/db/migration/V044__deye_register_max_current_a.sql
+++ b/db/migration/V044__deye_register_max_current_a.sql
@@ -4,6 +4,6 @@ ALTER TABLE ems.asset_inverter
     ADD COLUMN IF NOT EXISTS deye_register_max_discharge_a INT NULL;
 
 COMMENT ON COLUMN ems.asset_inverter.deye_register_max_charge_a IS
-    'Optional A for reg 108; EMS uses COALESCE(this, FLOOR(LEAST(W)/51.2)) in _load_inverter_config.';
+    'Optional cap for holding reg 108 (A); NULL = use only LEAST(W)/51.2 derived max.';
 COMMENT ON COLUMN ems.asset_inverter.deye_register_max_discharge_a IS
-    'Optional A for reg 109; EMS uses COALESCE(this, FLOOR(LEAST(W)/51.2)) in _load_inverter_config.';
+    'Optional cap for holding reg 109 (A); NULL = use only derived max.';
diff --git a/db/migration/V047__deye_register_max_current_a_comments.sql b/db/migration/V047__deye_register_max_current_a_comments.sql
new file mode 100644
index 0000000..6b8f6bc
--- /dev/null
+++ b/db/migration/V047__deye_register_max_current_a_comments.sql
@@ -0,0 +1,5 @@
+-- Dříve upravené COMMENT v rámci V044; po pravidle Flyway jen nová migrace (checksum V044 nesmí měnit).
+COMMENT ON COLUMN ems.asset_inverter.deye_register_max_charge_a IS
+    'Optional A for reg 108; EMS uses COALESCE(this, FLOOR(LEAST(W)/51.2)) in _load_inverter_config.';
+COMMENT ON COLUMN ems.asset_inverter.deye_register_max_discharge_a IS
+    'Optional A for reg 109; EMS uses COALESCE(this, FLOOR(LEAST(W)/51.2)) in _load_inverter_config.';