diff --git a/src/Controller/BatteryManufacturerController.php b/src/Controller/BatteryManufacturerController.php
index d68b96f3..d7ff0ebb 100644
--- a/src/Controller/BatteryManufacturerController.php
+++ b/src/Controller/BatteryManufacturerController.php
@@ -4,6 +4,7 @@ namespace App\Controller;
 
 use App\Ramcar\BaseController;
 use App\Entity\BatteryManufacturer;
+use App\Entity\Vehicle;
 
 use Doctrine\ORM\Query;
 use Symfony\Component\HttpFoundation\Request;
@@ -275,25 +276,31 @@ class BatteryManufacturerController extends BaseController
 
         // get row data
         $em = $this->getDoctrine()->getManager();
-        $row = $em->getRepository(BatteryManufacturer::class)->find($req->request->get('id'));
+        $obj = $em->getRepository(BatteryManufacturer::class)->find($req->request->get('id'));
+        $vobj = $em->getRepository(Vehicle::class)->find($req->request->get('vehicle_id'));
 
-        if (empty($row))
+        if (empty($obj) || empty($vobj))
             throw $this->createNotFoundException('The item does not exist');
 
         // build batteries array
         $batteries = [];
 
-        foreach ($row->getBatteries() as $battery) {
-            $batteries[] = [
-                'id' => $battery->getID(),
-                'mfg_name' => $battery->getManufacturer()->getName(),
-                'model_name' => $battery->getModel()->getName(),
-                'size_name' => $battery->getSize()->getName(),
-                'prod_code' => $battery->getProductCode(),
-                'sell_price' => $battery->getSellingPrice(),
-                'warr_private' => $battery->getWarrantyPrivate(),
-                'warr_commercial' => $battery->getWarrantyCommercial(),
-            ];
+        // get compatible batteries from selected manufacturer
+        foreach ($vobj->getBatteries() as $battery)
+        {
+            if ($battery->getManufacturer()->getID() == $obj->getID())
+            {
+                $batteries[] = [
+                    'id' => $battery->getID(),
+                    'mfg_name' => $battery->getManufacturer()->getName(),
+                    'model_name' => $battery->getModel()->getName(),
+                    'size_name' => $battery->getSize()->getName(),
+                    'prod_code' => $battery->getProductCode(),
+                    'sell_price' => $battery->getSellingPrice(),
+                    'warr_private' => $battery->getWarrantyPrivate(),
+                    'warr_commercial' => $battery->getWarrantyCommercial(),
+                ];
+            }    
         }
 
         // response
diff --git a/templates/job-order/form.html.twig b/templates/job-order/form.html.twig
index b9e0ad70..0c24489e 100644
--- a/templates/job-order/form.html.twig
+++ b/templates/job-order/form.html.twig
@@ -343,10 +343,10 @@
 												{% endfor %}
 											</select>
 										</div>
-										<div class="col-lg-2">
+										<div class="col-lg-3">
 											<label for="invoice-battery">Battery</label>
 											<select class="form-control m-input" id="invoice-battery" data-value="" disabled>
-												<option value="">Select a manufacturer first</option>
+												<option value="">Select a vehicle and manufacturer first</option>
 											</select>
 										</div>
 										<div class="col-lg-2">
@@ -366,7 +366,7 @@
 											<div><label>&nbsp;</label></div>
 											<button type="button" class="btn btn-primary" id="btn-add-to-invoice">Add to Invoice</button>
 										</div>
-										<div class="col-lg-2 text-right">
+										<div class="col-lg-3 text-right">
 											<div><label>&nbsp;</label></div>
 											<button type="button" class="btn btn-danger" id="btn-reset-invoice">Reset Invoice</button>
 										</div>
@@ -764,7 +764,7 @@ $(function() {
 	}
 
 	// store selected vehicle data
-	var vdata;
+	var vdata = false;
 
 	// vehicle selector
     $('#customer-vehicle').select2({
@@ -795,6 +795,12 @@ $(function() {
 
 			// reset vehicle fields
 			resetVehicleFields();
+
+			// reset invoice fields
+			$("#btn-reset-invoice").click();
+
+			// get compatible batteries
+			$("#invoice-bmfg").change();
 			
 			// set form fields
 			$("[data-vehicle-field='1']").prop('placeholder', '');
@@ -864,12 +870,16 @@ $(function() {
 
 	// update battery list when changing manufacturer
 	$("#invoice-bmfg").change(function() {
+		// must have a selected vehicle
+		if (!vdata)
+			return;
+
 		var id = $(this).val();
 		var field = $("#invoice-battery");
 
 		// no id specified
 		if (!id) {
-			field.html('<option value="">Select a manufacturer first</option>').prop('disabled', true);
+			field.html('<option value="">Select a vehicle and manufacturer first</option>').prop('disabled', true);
 			return true;
 		}
 
@@ -877,7 +887,10 @@ $(function() {
 		$.ajax({
 			method: "POST",
 			url: "{{ url('bmfg_batteries') }}",
-			data: {id: id}
+			data: {
+				id: id,
+				vehicle_id: vdata.vehicle.id
+			}
 		}).done(function(response) {
 			if (response.data.length > 0) {
 				var html = '';
@@ -894,7 +907,7 @@ $(function() {
 				field.html('<option value="">No batteries found</option>').prop('disabled', true);
 			}
 		});
-	}).change();
+	});
 
 	// mask quantity field
 	$("#invoice-quantity").inputmask("mask", {