diff --git a/lam/lib/html.inc b/lam/lib/html.inc
index be4ba4f73..39f2ab6da 100644
--- a/lam/lib/html.inc
+++ b/lam/lib/html.inc
@@ -3654,6 +3654,7 @@ class htmlAccordion extends htmlElement {
 	private $id;
 	private $elements;
 	private $openInitial;
+	private $saveState;
 
 	/**
 	 * Constructor.
@@ -3680,23 +3681,21 @@ class htmlAccordion extends htmlElement {
 	 */
 	function generateHTML($module, $input, $values, $restricted, $scope) {
 		$result = array();
-		$active = 'false';
 		if ($this->openInitial !== false) {
-			$active = $this->openInitial;
+			$this->addDataAttribute('openinitial', $this->openInitial);
 		}
-		echo '<div class="lam-accordion-container">';
+		$cssClasses = $this->getCSSClasses();
+		$cssClasses[] = 'lam-accordion-container';
+		if ($this->saveState) {
+			$this->addDataAttribute('savestate', 'true');
+		}
+		echo '<div id="' . $this->id . '" class="' . implode(' ', $cssClasses) . '"' . $this->getDataAttributesAsString() . '>';
 		$contentIndex = 0;
 		foreach ($this->elements as $label => $content) {
-			$activeClassButton = '';
-			$activeClassContent = '';
-			if ($contentIndex === $active) {
-				$activeClassButton = 'lam-accordion-button-active';
-				$activeClassContent = 'lam-accordion-content-active';
-			}
-			echo '<button id="' . $this->id . '" class="lam-accordion-button ' . $activeClassButton . '" onclick="return false;" data-index="' . $contentIndex . '">';
+			echo '<button id="' . $this->id . '_' . $contentIndex . '" class="lam-accordion-button" onclick="return false;" data-index="' . $contentIndex . '">';
 			echo $label;
 			echo '</button>';
-			echo '<div class="lam-accordion-content ' . $activeClassContent . '" data-index="' . $contentIndex . '">';
+			echo '<div class="lam-accordion-content" data-index="' . $contentIndex . '">';
 			echo '<div class="lam-accordion-content-inner">';
 			$result = array_merge($result, $content->generateHTML($module, $input, $values, $restricted, $scope));
 			echo '</div>';
@@ -3704,11 +3703,20 @@ class htmlAccordion extends htmlElement {
 			$contentIndex++;
 		}
 		$hiddenIndexId = $this->id . "_index";
-		echo '<input type="hidden" name="' . $hiddenIndexId . '" id="' . $hiddenIndexId . '" value="' . $active . '">';
+		echo '<input type="hidden" name="' . $hiddenIndexId . '" id="' . $hiddenIndexId . '" value="false">';
 		echo '</div>';
 		return $result;
 	}
 
+	/**
+	 * Saves the state of open/closed items over page reloads.
+	 *
+	 * @param bool $saveState save state
+	 */
+	public function saveState(bool $saveState = true): void {
+		$this->saveState = $saveState;
+	}
+
 }
 
 /**
diff --git a/lam/templates/lib/500_lam.js b/lam/templates/lib/500_lam.js
index 2e7894c9d..52428e9b2 100644
--- a/lam/templates/lib/500_lam.js
+++ b/lam/templates/lib/500_lam.js
@@ -3148,9 +3148,34 @@ window.lam.accordion.init = function() {
 			return false;
 		});
 	});
-	const accordionContentAreas = document.getElementsByClassName('lam-accordion-content-active');
-	Array.from(accordionContentAreas).forEach(function (contentArea) {
-		contentArea.style.maxHeight = contentArea.scrollHeight + 'px';
+	const accordions = document.getElementsByClassName('lam-accordion-container');
+	Array.from(accordions).forEach(function (accordion) {
+		const isSaveState = accordion.dataset.savestate && (accordion.dataset.savestate === 'true');
+		let openInitial = false;
+		const storageKey = 'lam_accordionStore_' + accordion.id;
+		if (isSaveState && window.localStorage.getItem(storageKey)) {
+			// load value from local storage
+			openInitial = window.localStorage.getItem(storageKey);
+		}
+		else if (accordion.dataset.openinitial) {
+			openInitial = accordion.dataset.openinitial;
+		}
+		if (openInitial !== false) {
+			accordion.querySelectorAll('.lam-accordion-button').forEach(item => {
+				const buttonIndex = item.dataset.index;
+				if (openInitial === buttonIndex) {
+					item.classList.add('lam-accordion-button-active');
+				}
+			});
+			accordion.querySelectorAll('.lam-accordion-content').forEach(item => {
+				const contentIndex = item.dataset.index;
+				if (openInitial === contentIndex) {
+					item.style.maxHeight = null;
+					item.classList.add('lam-accordion-content-active')
+					item.style.maxHeight = item.scrollHeight + 'px';
+				}
+			});
+		}
 	});
 }
 
@@ -3175,16 +3200,21 @@ window.lam.accordion.onClick = function(event, button) {
 		content.classList.add('lam-accordion-content-active')
 	}
 	const indexActive = button.dataset.index;
-	const parent = button.parentElement;
+	const accordion = button.parentElement;
+	const isSaveState = accordion.dataset.savestate && (accordion.dataset.savestate === 'true');
+	if (isSaveState) {
+		const storageKey = 'lam_accordionStore_' + accordion.id;
+		window.localStorage.setItem(storageKey, indexActive);
+	}
 	// deactivate other buttons
-	parent.querySelectorAll('.lam-accordion-button').forEach(item => {
+	accordion.querySelectorAll('.lam-accordion-button').forEach(item => {
 		const buttonIndex = item.dataset.index;
 		if (indexActive !== buttonIndex) {
 			item.classList.remove('lam-accordion-button-active');
 		}
 	});
 	// close other content areas
-	parent.querySelectorAll('.lam-accordion-content').forEach(item => {
+	accordion.querySelectorAll('.lam-accordion-content').forEach(item => {
 		const contentIndex = item.dataset.index;
 		if (indexActive !== contentIndex) {
 			item.style.maxHeight = null;
diff --git a/lam/tests/design/designExamples.php b/lam/tests/design/designExamples.php
index 47ac32ae1..e0f4a2576 100644
--- a/lam/tests/design/designExamples.php
+++ b/lam/tests/design/designExamples.php
@@ -289,6 +289,20 @@
 
 $row->add(new htmlSpacer(null, '5rem'));
 
+$accordionElementsSaveState = [];
+for ($i = 0; $i < 5; $i++) {
+	$accordionElementsSaveStateContent = new htmlResponsiveRow();
+	$accordionElementsSaveStateContent->add(new htmlResponsiveInputField('Input 1', 'accSi1' . $i));
+	$accordionElementsSaveStateContent->add(new htmlResponsiveInputField('Input 2', 'accSi2' . $i));
+	$accordionElementsSaveStateContent->add(new htmlResponsiveInputTextarea('accSi3' . $i, '', 20, 3, 'Text area'));
+	$accordionElementsSaveState['Accordion with saved state ' . $i] = $accordionElementsSaveStateContent;
+}
+$saveStateAccordion = new htmlAccordion('acc_save', $accordionElementsSaveState, 2);
+$saveStateAccordion->saveState();
+$row->add($saveStateAccordion);
+
+$row->add(new htmlSpacer(null, '5rem'));
+
 $row->add(new htmlSubTitle('Sortable list'));
 
 $sortableList1 = new htmlSortableList([