diff --git a/src/duplicacy_oneclient.go b/src/duplicacy_oneclient.go
index 0f25bb91..e166feb3 100644
--- a/src/duplicacy_oneclient.go
+++ b/src/duplicacy_oneclient.go
@@ -46,12 +46,24 @@ type OneDriveClient struct {
 	IsConnected bool
 	TestMode    bool
 
-	IsBusiness bool
+	IsBusiness   bool
+	MaxBatchReqs int
+
 	RefreshTokenURL string
 	APIURL string
+
+	BatchURL string
+	StripBatchPrefixURL string
 }
 
-func NewOneDriveClient(tokenFile string, isBusiness bool, client_id string, client_secret string, drive_id string) (*OneDriveClient, error) {
+func NewOneDriveClient(
+	tokenFile string, 
+	isBusiness bool, 
+	max_batch_requests int, 
+	client_id string, 
+	client_secret string, 
+	drive_id string,
+) (*OneDriveClient, error) {
 
 	description, err := ioutil.ReadFile(tokenFile)
 	if err != nil {
@@ -64,12 +76,13 @@ func NewOneDriveClient(tokenFile string, isBusiness bool, client_id string, clie
 	}
 
 	client := &OneDriveClient{
-		HTTPClient: http.DefaultClient,
-		TokenFile:  tokenFile,
-		Token:      token,
-		OAConfig:	nil,
-		TokenLock:  &sync.Mutex{},
-		IsBusiness: isBusiness,
+		HTTPClient:   http.DefaultClient,
+		TokenFile:    tokenFile,
+		Token:        token,
+		OAConfig:	  nil,
+		TokenLock:    &sync.Mutex{},
+		IsBusiness:   isBusiness,
+		MaxBatchReqs: max_batch_requests,
 	}
 
 	if (client_id != "") {
@@ -92,9 +105,12 @@ func NewOneDriveClient(tokenFile string, isBusiness bool, client_id string, clie
 		if drive_id != "" {
 			client.APIURL = "https://graph.microsoft.com/v1.0/drives/"+drive_id
 		}
+		client.BatchURL = "https://graph.microsoft.com/v1.0/$batch"
+		client.StripBatchPrefixURL = "https://graph.microsoft.com/v1.0/"
 	} else {
 		client.RefreshTokenURL = "https://duplicacy.com/one_refresh"
 		client.APIURL = "https://api.onedrive.com/v1.0/drive"
+		client.BatchURL = "<Batching is only supported by Graph API>"
 	}
 
 	client.RefreshToken(false)
@@ -272,6 +288,12 @@ func (client *OneDriveClient) RefreshToken(force bool) (err error) {
 	return nil
 }
 
+
+type OneDriveListReqItem struct {
+	Path string
+	URL  string
+}
+
 type OneDriveEntry struct {
 	ID     string
 	Name   string
@@ -279,9 +301,15 @@ type OneDriveEntry struct {
 	Size   int64
 }
 
+type ErrorResponse struct {
+	Code     string	`json:"code"`
+	Message  string `json:"message"`
+}
+
 type OneDriveListEntriesOutput struct {
 	Entries  []OneDriveEntry `json:"value"`
 	NextLink string          `json:"@odata.nextLink"`
+	Error	 ErrorResponse	 `json:"error"`
 }
 
 func (client *OneDriveClient) ListEntries(path string) ([]OneDriveEntry, error) {
@@ -324,6 +352,174 @@ func (client *OneDriveClient) ListEntries(path string) ([]OneDriveEntry, error)
 	return entries, nil
 }
 
+func (client *OneDriveClient) ListPathToURL(path string) (url string) {
+
+	url = client.APIURL + "/root:/" + path + ":/children"
+	if path == "" {
+		url = client.APIURL + "/root/children"
+	}
+	if client.TestMode {
+		url += "?top=8"
+	} else {
+		url += "?top=1000"
+	}
+	url += "&select=name,size,folder"
+
+	return url
+}
+
+
+type BatchRequestItem struct {
+	Id 		string	`json:"id"`
+	Method	string	`json:"method"`
+	URL		string	`json:"url"`
+}
+
+type BatchRequest struct {
+	Requests	[]BatchRequestItem `json:"requests"`
+}
+
+type BatchResponseItem struct {
+	Id 		string						`json:"id"`
+	Status	int							`json:"status"`
+	Headers	map[string]string			`json:"headers"`
+	Body	OneDriveListEntriesOutput	`json:"body"`
+}
+
+type BatchResponse struct {
+	Responses []BatchResponseItem `json:"responses"`
+}
+
+
+func (client *OneDriveClient) ListEntriesBatch(
+	prefix string, 
+	batchReqs []OneDriveListReqItem,
+) (
+	entriesPerReq []OneDriveListEntriesOutput, 
+	newReqs []OneDriveListReqItem,
+	err error,
+) {
+	nReqs := len(batchReqs)
+
+	entriesPerReq = make([]OneDriveListEntriesOutput, nReqs, nReqs)
+	newReqs = make([]OneDriveListReqItem, 0, 0)
+
+	for i, req := range batchReqs {
+		if req.URL == "" {
+			batchReqs[i].URL = client.ListPathToURL(prefix + "/" + batchReqs[i].Path)
+		}
+	}
+
+	if client.IsBusiness && nReqs > 1 {
+		// OneDrive Business uses Graph API which supports batching
+	    breq := BatchRequest{}
+	    breq.Requests = make([]BatchRequestItem, len(batchReqs), len(batchReqs))
+	    for i, req := range batchReqs {
+		    breq.Requests[i].Id = strconv.Itoa(i+1)
+		    breq.Requests[i].Method = "GET"
+		    breq.Requests[i].URL = req.URL[len(client.StripBatchPrefixURL):]
+	    }
+		tracestr := fmt.Sprintf("Batch payload: %d requests", len(breq.Requests))
+		for _, req := range breq.Requests {
+			tracestr = tracestr + fmt.Sprintf("\n\t\t%s %s", req.Method, req.URL)
+		}
+		LOG_TRACE("ONEDRIVE_BATCH", tracestr)
+
+		readCloser, _, err := client.call(client.BatchURL, "POST", breq, "application/json")
+		if err != nil {
+			return nil, nil, err
+		}
+
+		defer readCloser.Close()
+	
+		bresp := &BatchResponse{}
+
+		if err = json.NewDecoder(readCloser).Decode(&bresp); err != nil {
+			return nil, nil, err
+		}
+		if len(bresp.Responses) != len(batchReqs) {
+			return nil, nil, fmt.Errorf("Batch response length mismatch with requests length: %d != %d", len(bresp.Responses), len(batchReqs))
+		}
+		throttleDelay := 0
+
+	    for _, resp := range bresp.Responses {
+		    nresp, err := strconv.Atoi(resp.Id)
+			if err != nil {
+				return nil, nil, err
+			}
+			nresp-- // ids are 1-based in the response payload
+
+			if resp.Status == 200 { // success
+				entriesPerReq[nresp] = resp.Body
+				if entriesPerReq[nresp].NextLink != "" {
+					newReqs = append(
+						newReqs, 
+						OneDriveListReqItem{
+							Path: batchReqs[nresp].Path, 
+							URL:  entriesPerReq[nresp].NextLink,
+						},
+					)
+				}
+			} else if resp.Status == 429 { // throttled
+				var backoff int
+				backoffList, found := resp.Headers["Retry-After"]
+				if found && len(backoffList)>0 {
+					backoff, _ = strconv.Atoi(backoffList)
+					backoff *= 1000 // s to ms
+				} else {
+					backoff = 300000 // 5 minutes by default
+				}
+				if backoff > throttleDelay {
+					throttleDelay = backoff
+				}
+				LOG_INFO("ONEDRIVE_RETRY", "Batch item response code: %d; suggested retry is %d milliseconds", resp.Status, backoff)
+				// Retry the same URL
+				newReqs = append(newReqs, batchReqs[nresp])
+			} else if resp.Status == 400 || resp.Status == 401 { 
+				// Some errors are expected, e.g. unauthorized / expired token
+				// Retry the same URL
+				newReqs = append(newReqs, batchReqs[nresp])
+			} else { // unexpected error
+				errmsg := resp.Body.Error.Message
+				//LOG_TRACE("ONEDRIVE_BATCH", "Unexpected batch response error %d: %s / %s", resp.Status, http.StatusText(resp.Status), errmsg)
+				return nil, nil, fmt.Errorf("Unexpected batch response error %d: %s / %s", resp.Status, http.StatusText(resp.Status), errmsg)
+			}
+	    }
+
+   		if throttleDelay > 0 {
+			LOG_INFO("ONEDRIVE_RETRY", "Batch request throttled; retry after %d milliseconds", throttleDelay)
+			time.Sleep(time.Duration(throttleDelay) * time.Millisecond)
+			throttleDelay = 0
+		}
+
+	} else {
+		// Run without batching
+		for i, req := range batchReqs {
+			readCloser, _, err := client.call(req.URL, "GET", 0, "")
+			if err != nil {
+				return nil, nil, err
+			}
+
+			defer readCloser.Close()
+
+			if err = json.NewDecoder(readCloser).Decode(&entriesPerReq[i]); err != nil {
+				return nil, nil, err
+			}
+			if entriesPerReq[i].NextLink != "" {
+				newReqs = append(
+					newReqs, 
+					OneDriveListReqItem{
+						Path: batchReqs[i].Path, 
+						URL:  entriesPerReq[i].NextLink,
+					},
+				)
+			}
+		}
+	}
+
+	return entriesPerReq, newReqs, nil
+}
+
 func (client *OneDriveClient) GetFileInfo(path string) (string, bool, int64, error) {
 
 	url := client.APIURL + "/root:/" + path
diff --git a/src/duplicacy_onestorage.go b/src/duplicacy_onestorage.go
index fb0fc804..e7ad4f8d 100644
--- a/src/duplicacy_onestorage.go
+++ b/src/duplicacy_onestorage.go
@@ -8,24 +8,41 @@ import (
 	"fmt"
 	"path"
 	"strings"
+	"sync"
 )
 
 type OneDriveStorage struct {
 	StorageBase
 
-	client         *OneDriveClient
-	storageDir     string
-	numberOfThread int
+	client          *OneDriveClient
+	storageDir      string
+	numberOfThreads int
 }
 
 // CreateOneDriveStorage creates an OneDrive storage object.
-func CreateOneDriveStorage(tokenFile string, isBusiness bool, storagePath string, threads int, client_id string, client_secret string, drive_id string) (storage *OneDriveStorage, err error) {
+func CreateOneDriveStorage(
+	tokenFile string, 
+	isBusiness bool, 
+	storagePath string, 
+	threads int, 
+	max_batch_requests int, 
+	client_id string, 
+	client_secret string, 
+	drive_id string,
+) (storage *OneDriveStorage, err error) {
 
 	for len(storagePath) > 0 && storagePath[len(storagePath)-1] == '/' {
 		storagePath = storagePath[:len(storagePath)-1]
 	}
 
-	client, err := NewOneDriveClient(tokenFile, isBusiness, client_id, client_secret, drive_id)
+	client, err := NewOneDriveClient(
+		tokenFile, 
+		isBusiness, 
+		max_batch_requests, 
+		client_id, 
+		client_secret, 
+		drive_id,
+	)
 	if err != nil {
 		return nil, err
 	}
@@ -44,9 +61,9 @@ func CreateOneDriveStorage(tokenFile string, isBusiness bool, storagePath string
 	}
 
 	storage = &OneDriveStorage{
-		client:         client,
-		storageDir:     storagePath,
-		numberOfThread: threads,
+		client:          client,
+		storageDir:      storagePath,
+		numberOfThreads: threads,
 	}
 
 	for _, path := range []string{"chunks", "fossils", "snapshots"} {
@@ -78,8 +95,9 @@ func (storage *OneDriveStorage) convertFilePath(filePath string) string {
 	return filePath
 }
 
+
 // ListFiles return the list of files and subdirectories under 'dir' (non-recursively)
-func (storage *OneDriveStorage) ListFiles(threadIndex int, dir string) ([]string, []int64, error) {
+func (storage *OneDriveStorage) ListFilesNotThreaded(threadIndex int, dir string) ([]string, []int64, error) {
 
 	for len(dir) > 0 && dir[len(dir)-1] == '/' {
 		dir = dir[:len(dir)-1]
@@ -145,6 +163,140 @@ func (storage *OneDriveStorage) ListFiles(threadIndex int, dir string) ([]string
 
 }
 
+// ListFiles return the list of files and subdirectories under 'dir' (non-recursively)
+func (storage *OneDriveStorage) ListFiles(threadIndex int, dir string) ([]string, []int64, error) {
+
+	for len(dir) > 0 && dir[len(dir)-1] == '/' {
+		dir = dir[:len(dir)-1]
+	}
+
+	if dir == "snapshots" {
+		// Not threaded
+		entries, err := storage.client.ListEntries(storage.storageDir + "/" + dir)
+		if err != nil {
+			return nil, nil, err
+		}
+
+		subDirs := []string{}
+		for _, entry := range entries {
+			if len(entry.Folder) > 0 {
+				subDirs = append(subDirs, entry.Name+"/")
+			}
+		}
+		return subDirs, nil, nil
+	} else if strings.HasPrefix(dir, "snapshots/") || strings.HasPrefix(dir, "benchmark") {
+		// Not threaded
+		entries, err := storage.client.ListEntries(storage.storageDir + "/" + dir)
+		if err != nil {
+			return nil, nil, err
+		}
+
+		files := []string{}
+
+		for _, entry := range entries {
+			if len(entry.Folder) == 0 {
+				files = append(files, entry.Name)
+			}
+		}
+		return files, nil, nil
+	} else {
+		// Batched and threaded
+		lock := sync.Mutex {}
+		allFiles := []string{}
+		allSizes := []int64{}
+
+		errorChannel := make(chan error)
+		requestChannel := make(chan OneDriveListReqItem)
+		activeWorkers := 0
+
+		requests := []OneDriveListReqItem{
+			{Path:"chunks", 	URL:""},
+			{Path:"fossils", 	URL:""},
+		}
+
+		maxRequestsPerThread := 1
+		if storage.client.MaxBatchReqs > 1 {
+			// OneDrive Business works through Graph API 
+			// which supports batch requests (20 is the max)
+			maxRequestsPerThread = storage.client.MaxBatchReqs
+		}
+
+		for len(requests) > 0 || activeWorkers > 0 {
+			if len(requests) > 0 && activeWorkers < storage.numberOfThreads {
+				n_batchReqs := len(requests)
+				if n_batchReqs > maxRequestsPerThread {
+					n_batchReqs = maxRequestsPerThread
+				}
+				// Dequeue n_batch_reqs from the request queue
+				batchReqs := requests[:n_batchReqs]
+				requests = requests[n_batchReqs:]
+				activeWorkers++
+
+				go func(batchReqs []OneDriveListReqItem) {
+					// Will do non-batching if disabled / not supported
+					entriesPerReq, newReqs, err := storage.client.ListEntriesBatch(storage.storageDir, batchReqs)
+					if err != nil {
+						errorChannel <- err
+						return
+					}
+
+					// send paging requests first
+					for _, pageReq := range newReqs {
+						requestChannel <- pageReq 
+					}
+
+					files := []string {}
+					sizes := []int64 {}
+
+					for i, entries := range entriesPerReq {
+						LOG_DEBUG("ONE_STORAGE", "Listing %s; %d items returned", batchReqs[i].Path, len(entries.Entries))
+						for _, entry := range entries.Entries {
+							if len(entry.Folder) == 0 {
+								name := entry.Name
+								if strings.HasPrefix(batchReqs[i].Path, "fossils") {
+									name = batchReqs[i].Path + "/" + name + ".fsl"
+									name = name[len("fossils/"):]
+								} else {
+									name = batchReqs[i].Path + "/" + name
+									name = name[len("chunks/"):]
+								}
+								files = append(files, name)
+								sizes = append(sizes, entry.Size)
+							} else {
+								recurseDirRequest := OneDriveListReqItem{
+									Path: batchReqs[i].Path + "/" + entry.Name,
+									URL: "",
+								}
+								requestChannel <- recurseDirRequest
+							}
+						}
+					}
+					lock.Lock()
+					allFiles = append(allFiles, files...)
+					allSizes = append(allSizes, sizes...)
+					lock.Unlock()
+					requestChannel <- OneDriveListReqItem{Path:"", URL:""}
+				} (batchReqs)
+			}
+
+			if activeWorkers > 0 {
+				select {
+				case err := <- errorChannel:
+					return nil, nil, err
+				case request := <- requestChannel:
+					if request.Path == "" {
+						activeWorkers--
+					} else {
+						requests = append(requests, request)
+					}
+				}
+			}
+		}
+
+		return allFiles, allSizes, nil
+	}
+}
+
 // DeleteFile deletes the file or directory at 'filePath'.
 func (storage *OneDriveStorage) DeleteFile(threadIndex int, filePath string) (err error) {
 	filePath = storage.convertFilePath(filePath)
@@ -211,13 +363,13 @@ func (storage *OneDriveStorage) DownloadFile(threadIndex int, filePath string, c
 
 	defer readCloser.Close()
 
-	_, err = RateLimitedCopy(chunk, readCloser, storage.DownloadRateLimit/storage.numberOfThread)
+	_, err = RateLimitedCopy(chunk, readCloser, storage.DownloadRateLimit/storage.numberOfThreads)
 	return err
 }
 
 // UploadFile writes 'content' to the file at 'filePath'.
 func (storage *OneDriveStorage) UploadFile(threadIndex int, filePath string, content []byte) (err error) {
-	err = storage.client.UploadFile(storage.storageDir+"/"+filePath, content, storage.UploadRateLimit/storage.numberOfThread)
+	err = storage.client.UploadFile(storage.storageDir+"/"+filePath, content, storage.UploadRateLimit/storage.numberOfThreads)
 
 	if e, ok := err.(OneDriveError); ok && e.Status == 409 {
 		LOG_TRACE("ONEDRIVE_UPLOAD", "File %s already exists", filePath)
diff --git a/src/duplicacy_storage.go b/src/duplicacy_storage.go
index 0ad6891d..4a3457f5 100644
--- a/src/duplicacy_storage.go
+++ b/src/duplicacy_storage.go
@@ -669,7 +669,28 @@ func CreateStorage(preference Preference, resetPassword bool, threads int) (stor
 			client_secret = GetPassword(preference, matched[1] + "_client_secret", prompt, true, resetPassword)
 		}
 
-		oneDriveStorage, err := CreateOneDriveStorage(tokenFile, matched[1] == "odb", storagePath, threads, client_id, client_secret, drive_id)
+		// OneDrive Business uses Graph API which supports request batching
+		// "disabled" - (-1) disabled
+		// "max"      - ( 0) enabled, max requests per batch (normally, 20)
+		// "<nn>"     - (nn) enabled, specified requests per batch
+		max_batch_requests := -1
+
+		if matched[1] == "odb" {
+			max_batch_requests_str := GetPasswordFromPreference(preference, matched[1] + "_max_batch_requests")
+			if max_batch_requests_str == "max" {
+				max_batch_requests = 20 
+			} else if max_batch_requests_str != "" {
+				n, err := strconv.Atoi(max_batch_requests_str)
+				if err == nil {
+					max_batch_requests = n
+					if max_batch_requests > 20 {
+						max_batch_requests = 20
+					}
+				}
+			}
+		}
+
+		oneDriveStorage, err := CreateOneDriveStorage(tokenFile, matched[1] == "odb", storagePath, threads, max_batch_requests, client_id, client_secret, drive_id)
 		if err != nil {
 			LOG_ERROR("STORAGE_CREATE", "Failed to load the OneDrive storage at %s: %v", storageURL, err)
 			return nil