diff --git a/packages/extension-base/src/background/handlers/Extension.ts b/packages/extension-base/src/background/handlers/Extension.ts
index 0770377d4dd..9bcc752d756 100644
--- a/packages/extension-base/src/background/handlers/Extension.ts
+++ b/packages/extension-base/src/background/handlers/Extension.ts
@@ -8,7 +8,7 @@ import type { SubjectInfo } from '@polkadot/ui-keyring/observable/types';
 import type { KeypairType } from '@polkadot/util-crypto/types';
 import type { AccountJson, AllowedPath, MessageTypes, RequestAccountChangePassword, RequestAccountCreateHardware, RequestAccountCreateSuri, RequestAccountEdit, RequestAccountExport, RequestAccountForget, RequestAccountShow, RequestAccountTie, RequestAccountValidate, RequestActiveTabUrlUpdate, RequestAuthorizeApprove, RequestAuthorizeReject, RequestBatchRestore, RequestDeriveCreate, RequestDeriveValidate, RequestJsonRestore, RequestMetadataApprove, RequestMetadataReject, RequestSeedCreate, RequestSeedValidate, RequestSigningApprovePassword, RequestSigningApproveSignature, RequestSigningCancel, RequestSigningIsLocked, RequestTypes, RequestUpdateAuthorizedAccounts, ResponseAccountExport, ResponseAuthorizeList, ResponseDeriveValidate, ResponseJsonGetAccountInfo, ResponseSeedCreate, ResponseSeedValidate, ResponseSigningIsLocked } from '../types';
 
-import { ALLOWED_PATH, PASSWORD_EXPIRY_MS } from '@polkadot/extension-base/defaults';
+import { ALLOWED_PATH } from '@polkadot/extension-base/defaults';
 import { isJsonAuthentic, signJson } from '@polkadot/extension-base/utils/accountJsonIntegrity';
 import { metadataExpand } from '@polkadot/extension-chains';
 import { wrapBytes } from '@polkadot/extension-dapp';
@@ -18,13 +18,12 @@ import { accounts as accountsObservable } from '@polkadot/ui-keyring/observable/
 import { assert, isHex, u8aToHex } from '@polkadot/util';
 import { keyExtractSuri, mnemonicGenerate, mnemonicValidate } from '@polkadot/util-crypto';
 
+import chromeStorage from './chromeStorage';
 import { POPUP_CREATE_WINDOW_DATA } from './consts';
 import { openCenteredWindow } from './helpers';
 import State from './State';
 import { createSubscription, unsubscribe } from './subscriptions';
 
-type CachedUnlocks = Record<string, number>;
-
 type GetContentPort = (tabId: number) => chrome.runtime.Port
 
 const SEED_DEFAULT_LENGTH = 12;
@@ -40,12 +39,9 @@ function isJsonPayload (value: SignerPayloadJSON | SignerPayloadRaw): value is S
 }
 
 export default class Extension {
-  readonly #cachedUnlocks: CachedUnlocks;
-
   readonly #state: State;
 
   constructor (state: State) {
-    this.#cachedUnlocks = {};
     this.#state = state;
   }
 
@@ -137,14 +133,15 @@ export default class Extension {
     return true;
   }
 
-  private refreshAccountPasswordCache (pair: KeyringPair): number {
+  private async refreshAccountPasswordCache (pair: KeyringPair): Promise<number> {
     const { address } = pair;
 
-    const savedExpiry = this.#cachedUnlocks[address] || 0;
+    const savedExpiry = await chromeStorage.getPasswordExpiry(address);
+
     const remainingTime = savedExpiry - Date.now();
 
     if (remainingTime < 0) {
-      this.#cachedUnlocks[address] = 0;
+      await chromeStorage.removePassword(address);
       pair.lock();
 
       return 0;
@@ -351,7 +348,7 @@ export default class Extension {
       throw error;
     }
 
-    this.refreshAccountPasswordCache(pair);
+    await this.refreshAccountPasswordCache(pair);
 
     // if the keyring pair is locked, the password is needed
     if (pair.isLocked && !password) {
@@ -412,9 +409,15 @@ export default class Extension {
       // unlike queued.account.address the following
       // address is encoded with the default prefix
       // which what is used for password caching mapping
-      this.#cachedUnlocks[pair.address] = Date.now() + PASSWORD_EXPIRY_MS;
+      await chromeStorage.setPassword(pair.address);
     } else {
-      pair.lock();
+      const savedExpiry = await chromeStorage.getPasswordExpiry(pair.address);
+
+      const remainingTime = savedExpiry - Date.now();
+
+      if (remainingTime <= 0) {
+        pair.lock();
+      }
     }
 
     await this.#state.removeSignRequest(id);
@@ -449,7 +452,7 @@ export default class Extension {
 
     assert(pair, 'Unable to find pair');
 
-    const remainingTime = this.refreshAccountPasswordCache(pair);
+    const remainingTime = await this.refreshAccountPasswordCache(pair);
 
     return {
       isLocked: pair.isLocked,
diff --git a/packages/extension-base/src/background/handlers/chromeStorage.ts b/packages/extension-base/src/background/handlers/chromeStorage.ts
new file mode 100644
index 00000000000..1a65687e674
--- /dev/null
+++ b/packages/extension-base/src/background/handlers/chromeStorage.ts
@@ -0,0 +1,59 @@
+import { z } from 'zod';
+
+import { PASSWORD_EXPIRY_MS } from '../../defaults';
+
+const addressSchema = z.string();
+const passwordSchema = z.record(z.string(), z.number());
+
+async function getPasswordExpiry (address: string): Promise<number> {
+  if (addressSchema.safeParse(address).success) {
+    const { savePass } = await chrome.storage.session.get('savePass');
+
+    const pass = passwordSchema.safeParse(savePass);
+
+    if (pass.success) {
+      return pass.data[address];
+    } else {
+      return 0;
+    }
+  } else {
+    return 0;
+  }
+}
+
+async function setPassword (address: string): Promise<void> {
+  if (addressSchema.safeParse(address).success) {
+    const { savePass } = await chrome.storage.session.get('savePass');
+
+    const savedPasswords = passwordSchema.safeParse(savePass);
+
+    if (savedPasswords.success) {
+      await chrome.storage.session.set({ savePass: { ...savedPasswords.data, [address]: Date.now() + PASSWORD_EXPIRY_MS } });
+    } else {
+      await chrome.storage.session.set({ savePass: { [address]: Date.now() + PASSWORD_EXPIRY_MS } });
+    }
+  } else {
+    console.error('Provided address did not pass validation');
+  }
+}
+
+async function removePassword (address: string): Promise<void> {
+  if (addressSchema.safeParse(address).success) {
+    const { savePass } = await chrome.storage.session.get('savePass');
+
+    const pass = passwordSchema.safeParse(savePass);
+
+    if (pass.success) {
+      delete pass.data[address];
+      await chrome.storage.session.set({ savePass: pass.data });
+    }
+  }
+}
+
+const chromeStorage = {
+  setPassword,
+  getPasswordExpiry,
+  removePassword
+};
+
+export default chromeStorage;