diff --git a/Documentation/power_supply_class.txt b/Documentation/power_supply_class.txt
index a032c31..a8686e5 100644
--- a/Documentation/power_supply_class.txt
+++ b/Documentation/power_supply_class.txt
@@ -87,6 +87,10 @@
 Battery driver also can use this attribute just to inform userspace
 about maximal and minimal voltage thresholds of a given battery.
 
+VOLTAGE_MAX, VOLTAGE_MIN - same as _DESIGN voltage values except that
+these ones should be used if hardware could only guess (measure and
+retain) the thresholds of a given power supply.
+
 CHARGE_FULL_DESIGN, CHARGE_EMPTY_DESIGN - design charge values, when
 battery considered full/empty.
 
diff --git a/drivers/power/power_supply_sysfs.c b/drivers/power/power_supply_sysfs.c
index bab591ba..d482484 100644
--- a/drivers/power/power_supply_sysfs.c
+++ b/drivers/power/power_supply_sysfs.c
@@ -48,7 +48,8 @@
 		"Unspecified failure"
 	};
 	static char *technology_text[] = {
-		"Unknown", "NiMH", "Li-ion", "Li-poly", "LiFe", "NiCd"
+		"Unknown", "NiMH", "Li-ion", "Li-poly", "LiFe", "NiCd",
+		"LiMn"
 	};
 	ssize_t ret;
 	struct power_supply *psy = dev_get_drvdata(dev);
@@ -84,6 +85,8 @@
 	POWER_SUPPLY_ATTR(present),
 	POWER_SUPPLY_ATTR(online),
 	POWER_SUPPLY_ATTR(technology),
+	POWER_SUPPLY_ATTR(voltage_max),
+	POWER_SUPPLY_ATTR(voltage_min),
 	POWER_SUPPLY_ATTR(voltage_max_design),
 	POWER_SUPPLY_ATTR(voltage_min_design),
 	POWER_SUPPLY_ATTR(voltage_now),
diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h
index 358b38d..5cbf3e3 100644
--- a/include/linux/power_supply.h
+++ b/include/linux/power_supply.h
@@ -54,6 +54,7 @@
 	POWER_SUPPLY_TECHNOLOGY_LIPO,
 	POWER_SUPPLY_TECHNOLOGY_LiFe,
 	POWER_SUPPLY_TECHNOLOGY_NiCd,
+	POWER_SUPPLY_TECHNOLOGY_LiMn,
 };
 
 enum power_supply_property {
@@ -63,6 +64,8 @@
 	POWER_SUPPLY_PROP_PRESENT,
 	POWER_SUPPLY_PROP_ONLINE,
 	POWER_SUPPLY_PROP_TECHNOLOGY,
+	POWER_SUPPLY_PROP_VOLTAGE_MAX,
+	POWER_SUPPLY_PROP_VOLTAGE_MIN,
 	POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
 	POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
 	POWER_SUPPLY_PROP_VOLTAGE_NOW,