diff --git a/src/app/admin/batteries/[id]/page.tsx b/src/app/admin/batteries/[id]/page.tsx
index 0ce336d..84cbe75 100644
--- a/src/app/admin/batteries/[id]/page.tsx
+++ b/src/app/admin/batteries/[id]/page.tsx
@@ -994,6 +994,47 @@ export default function BatteryDetailPage({ params }: { params: Promise<{ id: st
         </div>
       )}
 
+      {battery.investorId && (
+        <div className="bg-emerald-50 rounded-xl border border-emerald-200 p-5 mb-6">
+          <div className="flex items-center justify-between mb-4">
+            <div className="flex items-center gap-3">
+              <div className="w-10 h-10 rounded-lg bg-emerald-100 flex items-center justify-center">
+                <Handshake className="w-5 h-5 text-emerald-600" />
+              </div>
+              <div>
+                <h3 className="font-semibold text-emerald-800">Investor Co-Ownership Details</h3>
+                <span className="text-xs text-emerald-600 bg-emerald-100 px-2 py-0.5 rounded-full font-medium">Active Investment</span>
+              </div>
+            </div>
+          </div>
+
+          <div className="grid grid-cols-2 md:grid-cols-4 gap-4">
+            <div className="bg-white rounded-lg p-3 border border-emerald-100/50">
+              <p className="text-xs text-emerald-600 mb-1">Investor Name</p>
+              <Link href={`/admin/investors/${battery.investorId}`} className="font-bold text-slate-800 hover:text-accent hover:underline flex items-center gap-1">
+                {battery.investorName} <TrendingUp className="w-3.5 h-3.5 text-emerald-500" />
+              </Link>
+              <p className="text-xs text-slate-400">ID: {battery.investorId}</p>
+            </div>
+            <div className="bg-white rounded-lg p-3 border border-emerald-100/50">
+              <p className="text-xs text-emerald-600 mb-1">Ownership Share (%)</p>
+              <p className="font-bold text-emerald-700 text-lg">{battery.investorSharePercentage}%</p>
+              <p className="text-xs text-slate-400">Share of Daily Rent Revenue</p>
+            </div>
+            <div className="bg-white rounded-lg p-3 border border-emerald-100/50">
+              <p className="text-xs text-emerald-600 mb-1">Invested Amount</p>
+              <p className="font-bold text-slate-800">৳{(battery.investedAmount || 0).toLocaleString()}</p>
+              <p className="text-xs text-slate-400">Total Capital Contributed</p>
+            </div>
+            <div className="bg-white rounded-lg p-3 border border-emerald-100/50">
+              <p className="text-xs text-emerald-600 mb-1">Investor Daily Payout</p>
+              <p className="font-bold text-emerald-600">৳{(((battery.rentPrice || 150) * (battery.investorSharePercentage || 0)) / 100).toLocaleString()}/day</p>
+              <p className="text-xs text-slate-400">Calculated from Daily Rent</p>
+            </div>
+          </div>
+        </div>
+      )}
+
       {showEditModal && (
         <EditBatteryModal
           battery={battery}
@@ -1157,6 +1198,52 @@ function EditBatteryModal({
               />
             </div>
           </div>
+          
+          <div className="border-t border-slate-100 pt-4 mt-4">
+            <h3 className="text-sm font-bold text-slate-800 mb-3">Investor Assignment (Co-Ownership)</h3>
+            <div className="grid grid-cols-2 gap-4">
+              <div>
+                <label className="block text-sm font-medium text-slate-700 mb-1">Investor ID</label>
+                <input
+                  type="text"
+                  value={formData.investorId || ''}
+                  onChange={(e) => handleChange('investorId', e.target.value)}
+                  placeholder="INV-001"
+                  className="w-full px-3 py-2 border border-slate-200 rounded-lg text-sm"
+                />
+              </div>
+              <div>
+                <label className="block text-sm font-medium text-slate-700 mb-1">Investor Name</label>
+                <input
+                  type="text"
+                  value={formData.investorName || ''}
+                  onChange={(e) => handleChange('investorName', e.target.value)}
+                  placeholder="Tahmid Rahman"
+                  className="w-full px-3 py-2 border border-slate-200 rounded-lg text-sm"
+                />
+              </div>
+              <div>
+                <label className="block text-sm font-medium text-slate-700 mb-1">Ownership Share (%)</label>
+                <input
+                  type="number"
+                  value={formData.investorSharePercentage || 0}
+                  onChange={(e) => handleChange('investorSharePercentage', parseInt(e.target.value))}
+                  placeholder="60"
+                  className="w-full px-3 py-2 border border-slate-200 rounded-lg text-sm"
+                />
+              </div>
+              <div>
+                <label className="block text-sm font-medium text-slate-700 mb-1">Invested Amount (৳)</label>
+                <input
+                  type="number"
+                  value={formData.investedAmount || 0}
+                  onChange={(e) => handleChange('investedAmount', parseInt(e.target.value))}
+                  placeholder="45000"
+                  className="w-full px-3 py-2 border border-slate-200 rounded-lg text-sm"
+                />
+              </div>
+            </div>
+          </div>
         </div>
         <div className="p-5 border-t border-slate-100 flex gap-3 sticky bottom-0 bg-white">
           <button onClick={onClose} className="flex-1 py-2.5 px-4 border border-slate-200 rounded-lg font-semibold text-sm hover:bg-slate-50">
diff --git a/src/app/admin/batteries/page.tsx b/src/app/admin/batteries/page.tsx
index 4854ca2..e785b17 100644
--- a/src/app/admin/batteries/page.tsx
+++ b/src/app/admin/batteries/page.tsx
@@ -5,7 +5,7 @@ import Link from 'next/link';
 import {
   Battery, Plus, Search, Filter, X, Download, Upload, MoreHorizontal,
   BatteryCharging, BatteryWarning, BatteryFull, Zap, Thermometer,
-  Activity, Clock, MapPin, Bike, User, History, TrendingUp, DollarSign,
+  Activity, Clock, MapPin, Bike, User, History, TrendingUp, DollarSign, Handshake,
   Eye, Edit, Trash2, RefreshCw, CheckCircle, AlertTriangle, ChevronRight,
   ArrowUpDown, Calendar, Gauge, Timer
 } from 'lucide-react';
@@ -65,6 +65,10 @@ interface Battery {
   bmsData?: BMSData;
   deposit?: number;
   rentPrice?: number;
+  investorId?: string;
+  investorName?: string;
+  investorSharePercentage?: number;
+  investedAmount?: number;
   history: BatteryHistory[];
 }
 
@@ -103,6 +107,10 @@ const mockBatteries: Battery[] = [
     purchasePrice: 45000,
     deposit: 5000,
     rentPrice: 150,
+    investorId: 'INV-001',
+    investorName: 'Tahmid Rahman',
+    investorSharePercentage: 60,
+    investedAmount: 45000,
     warrantyExpiry: '2027-01-15',
     status: 'in-use',
     currentSoc: 78,
@@ -737,27 +745,7 @@ export default function BatteriesPage() {
         </div>
       )}
 
-      {/* Details Modal */}
-      {showDetailsModal && selectedBattery && (
-        <div className="fixed inset-0 bg-black/50 flex items-center justify-center z-50 p-4">
-          <div className="bg-white rounded-xl shadow-xl w-full max-w-2xl max-h-[90vh] overflow-hidden flex flex-col">
-            <div className="p-5 border-b border-slate-100 flex items-center justify-between">
-              <h2 className="text-lg font-bold text-slate-800">Battery Details</h2>
-              <button onClick={() => setShowDetailsModal(false)} className="p-2 hover:bg-slate-100 rounded-lg">
-                <X className="w-5 h-5 text-slate-400" />
-              </button>
-            </div>
-            <BatteryDetails
-              battery={selectedBattery}
-              bikes={mockBikes}
-              bikers={mockBikers}
-              stations={mockStations}
-              onAssign={handleAssignToBike}
-              onClose={() => setShowDetailsModal(false)}
-            />
-          </div>
-        </div>
-      )}
+
 
       {/* History Modal */}
       {showHistoryModal && selectedBattery && (