Fixed float value to 4 decimals.

js/models/blockchain/Insight.js

@@ -34,7 +34,9 @@ Insight.prototype.getBalance = function(unspent) {
   for(var i=0;i<unspent.length; i++) {
     balance = balance + unspent[i].amount;
   }
-
+  if (balance) {
+    balance = balance.toFixed(4);
+  }
   return balance;
 };
 

js/models/core/Wallet.js

@@ -282,6 +282,9 @@ Wallet.prototype.getBalance = function(cb) {
     for(var i=0;i<unspent.length; i++) {
       balance = balance + unspent[i].amount;
     }
+    if (balance) {
+      balance = balance.toFixed(4);
+    }
     return cb(balance);
   });
 };