add 12V battery cover

cad/battery.scad

@@ -0,0 +1,32 @@
+$fn = 50;
+
+use <box.scad>
+
+//cylinder(r=8,h=2);
+
+
+
+module inner() {
+    cube([150,66,17+11]);
+}
+
+module outer() {
+    minkowski() {
+        inner();
+        cylinder(r=3,h=10);
+    }
+}
+
+difference() {
+    outer();
+    inner();
+    translate([20,-10,31]) cube([110,90,10]);
+    translate([12,5,42]) minkowski() {
+        stand1();
+        cylinder(r=1.2, h=0.2);
+    }
+    translate([150-35,62,0]) cube([2,10,11+5]);
+}
+
+
+