diff --git a/lib/battery.js b/lib/battery.js
index 816f367..1708f55 100644
--- a/lib/battery.js
+++ b/lib/battery.js
@@ -256,7 +256,7 @@ module.exports = function (callback) {
                       {
                         hasBattery: parsed.hasBattery,
                         maxCapacity: parsed.maxCapacity,
-                        designedCapacity: parsed.designCapacity,
+                        designedCapacity: parsed.designedCapacity,
                         voltage: parsed.voltage,
                         capacityUnit: parsed.capacityUnit,
                         percent: parsed.percent,