diff --git a/src/Methods/Net/PeerCount.php b/src/Methods/Net/PeerCount.php
index b021576..b638dd5 100644
--- a/src/Methods/Net/PeerCount.php
+++ b/src/Methods/Net/PeerCount.php
@@ -14,6 +14,7 @@ namespace Web3\Methods\Net;
 use InvalidArgumentException;
 use Web3\Methods\IMethod;
 use Web3\Methods\JSONRPC;
+use Web3\Formatters\BigNumberFormatter;
 
 class PeerCount extends JSONRPC implements IMethod
 {
@@ -29,7 +30,9 @@ class PeerCount extends JSONRPC implements IMethod
      * 
      * @var array
      */
-    protected $outputFormatters = [];
+    protected $outputFormatters = [
+        BigNumberFormatter::class
+    ];
 
     /**
      * construct
diff --git a/src/Providers/HttpProvider.php b/src/Providers/HttpProvider.php
index 5408774..b99de55 100644
--- a/src/Providers/HttpProvider.php
+++ b/src/Providers/HttpProvider.php
@@ -17,6 +17,13 @@ use Web3\RequestManagers\RequestManager;
 
 class HttpProvider extends Provider implements IProvider
 {
+    /**
+     * methods
+     * 
+     * @var array
+     */
+    protected $methods = [];
+
     /**
      * construct
      * 
@@ -39,9 +46,22 @@ class HttpProvider extends Provider implements IProvider
     {
         $payload = $method->toPayloadString();
 
-        if (!$this->isBatch) {          
-            $this->requestManager->sendPayload($payload, $callback);
+        if (!$this->isBatch) {
+            $proxy = function ($err, $res) use ($method, $callback) {
+                if ($err !== null) {
+                    return call_user_func($callback, $err, null);
+                }
+                if (!is_array($res)) {
+                    $res = $method->transform([$res], $method->outputFormatters);
+                    return call_user_func($callback, null, $res[0]);
+                }
+                $res = $method->transform($res, $method->outputFormatters);
+
+                return call_user_func($callback, null, $res);
+            };
+            $this->requestManager->sendPayload($payload, $proxy);
         } else {
+            $this->methods[] = $method;
             $this->batch[] = $payload;
         }
     }
@@ -70,30 +90,26 @@ class HttpProvider extends Provider implements IProvider
         if (!$this->isBatch) {
             throw new \RuntimeException('Please batch json rpc first.');
         }
-        $this->requestManager->sendPayload('[' . implode(',', $this->batch) . ']', $callback);
+        $methods = $this->methods;
+        $proxy = function ($err, $res) use ($methods, $callback) {
+            if ($err !== null) {
+                return call_user_func($callback, $err, null);
+            }
+            foreach ($methods as $key => $method) {
+                if (isset($res[$key])) {
+                    if (!is_array($res[$key])) {
+                        $transformed = $method->transform([$res[$key]], $method->outputFormatters);
+                        $res[$key] = $transformed[0];
+                    } else {
+                        $transformed = $method->transform($res[$key], $method->outputFormatters);
+                        $res[$key] = $transformed;
+                    }
+                }
+            }
+            return call_user_func($callback, null, $res);
+        };
+        $this->requestManager->sendPayload('[' . implode(',', $this->batch) . ']', $proxy);
+        $this->methods[] = [];
         $this->batch = [];
     }
-
-    /**
-     * createRpc
-     * 
-     * @param string $rpc
-     * @param array $arguments
-     * @return array
-     */
-    protected function createRpc($rpc, $arguments)
-    {
-        $this->id += 1;
-
-        $rpc = [
-            'id' => $this->id,
-            'jsonrpc' => $this->rpcVersion,
-            'method' => $rpc
-        ];
-
-        if (count($arguments) > 0) {
-            $rpc['params'] = $arguments;
-        }
-        return $rpc;
-    }
 }
\ No newline at end of file
diff --git a/test/unit/NetApiTest.php b/test/unit/NetApiTest.php
index a7c0e57..3766a3c 100644
--- a/test/unit/NetApiTest.php
+++ b/test/unit/NetApiTest.php
@@ -4,6 +4,7 @@ namespace Test\Unit;
 
 use RuntimeException;
 use Test\TestCase;
+use phpseclib\Math\BigInteger as BigNumber;
 
 class NetApiTest extends TestCase
 {
@@ -56,7 +57,7 @@ class NetApiTest extends TestCase
             if ($err !== null) {
                 return $this->fail($err->getMessage());
             }
-            $this->assertTrue(is_string($count));
+            $this->assertTrue($count instanceof BigNumber);
         });
     }
 
diff --git a/test/unit/NetBatchTest.php b/test/unit/NetBatchTest.php
index 1f81ab5..f3b58ec 100644
--- a/test/unit/NetBatchTest.php
+++ b/test/unit/NetBatchTest.php
@@ -4,6 +4,7 @@ namespace Test\Unit;
 
 use RuntimeException;
 use Test\TestCase;
+use phpseclib\Math\BigInteger as BigNumber;
 
 class NetBatchTest extends TestCase
 {
@@ -38,6 +39,7 @@ class NetBatchTest extends TestCase
         $net->batch(true);
         $net->version();
         $net->listening();
+        $net->peerCount();
 
         $net->provider->execute(function ($err, $data) {
             if ($err !== null) {
@@ -45,6 +47,7 @@ class NetBatchTest extends TestCase
             }
             $this->assertTrue(is_string($data[0]));
             $this->assertTrue(is_bool($data[1]));
+            $this->assertTrue($data[2] instanceof BigNumber);
         });
     }
 }
\ No newline at end of file
diff --git a/test/unit/Web3ApiTest.php b/test/unit/Web3ApiTest.php
index 137ec7d..a46f504 100644
--- a/test/unit/Web3ApiTest.php
+++ b/test/unit/Web3ApiTest.php
@@ -65,6 +65,13 @@ class Web3ApiTest extends TestCase
             }
             $this->assertEquals($hash, $this->testHash);
         });
+
+        $web3->sha3('hello world', function ($err, $hash) {
+            if ($err !== null) {
+                return $this->fail($err->getMessage());
+            }
+            $this->assertEquals($hash, $this->testHash);
+        });
     }
 
     /**
@@ -88,6 +95,8 @@ class Web3ApiTest extends TestCase
 
     /**
      * testWrongParam
+     * We transform data and throw invalid argument exception
+     * instead of runtime exception.
      * 
      * @return void
      */
@@ -97,7 +106,7 @@ class Web3ApiTest extends TestCase
 
         $web3 = $this->web3;
 
-        $web3->sha3('hello world', function ($err, $hash) {
+        $web3->sha3($web3, function ($err, $hash) {
             if ($err !== null) {
                 return $this->fail($err->getMessage());
             }