Miele HX-LA 21 Duoflex lithium-ion battery | 12519020
- Product SKU: 12519020
- Category: Miele Vacuum Parts, Vacuum Parts & Accessories
- Order within
Quick Summary
The Miele HX-LA 21 is a genuine replacement lithium-ion battery for selected Duoflex models. It uses seven high-performance cells and allows up to 55 minutes of cleaning, according to Miele.
This battery is listed for Duoflex Cat & Dog, Extra, AllFloor, and Total Care models. Confirm your vacuum’s exact model and the material number on the original battery before ordering.
- Genuine Miele replacement battery
- Model designation: HX-LA 21
- Seven high-performance cells
- Allows up to 55 minutes of cleaning
- Material number: 12519020
Product Overview
The HX-LA 21 restores battery power to compatible Miele Duoflex cordless vacuums. Miele identifies this replacement battery by model HX-LA 21 and material number 12519020.
Its seven high-performance cells support up to 55 minutes of cleaning, based on Miele’s published product information. The battery is listed for Duoflex Cat & Dog, Extra, AllFloor, and Total Care models.
Because Duoflex versions can differ, compare your vacuum’s model designation and the reference on its original battery before purchasing. This listing contains the replacement battery rather than a complete vacuum or accessory set.
Compatible Models
Confirmed by Miele or the product listing:
- Duoflex Cat & Dog
- Duoflex Extra
- Duoflex AllFloor
- Duoflex Total Care
Also listed as compatible (please confirm your model):
- Duoflex HX1 family, as listed in the catalog fitment data
Miele explicitly lists this battery for Duoflex Cat & Dog, Extra, AllFloor, and Total Care models. Match the vacuum model and the 12519020 material number with your existing battery before ordering, or ask Ace Vacuums to help confirm fit.
Key Features
- Lithium-ion battery: Provides replacement power for compatible Miele Duoflex vacuum models.
- Seven-cell design: Built with seven high-performance cells, according to Miele.
- Up to 55 minutes: Miele states that the battery allows up to 55 minutes of cleaning.
- Genuine Miele part: This is the Miele replacement battery identified by material number 12519020.
- Duoflex compatibility: Listed for Duoflex Cat & Dog, Extra, AllFloor, and Total Care models.
Why Genuine OEM Parts Matter
Genuine Miele parts are built to Miele's own dimensions and specifications, so they fit and seal the way the machine was designed. Non-OEM alternatives can differ in fit, materials or filtration, which can affect performance and airflow.
Ace Vacuums offers genuine OEM Miele products with expert support.
Installation or Usage Notes
- Switch off the vacuum and disconnect it from the charger before replacing the battery.
- Remove the existing battery according to the procedure for your Miele Duoflex model.
- Install the HX-LA 21 battery in the appliance, ensuring it is seated as directed by Miele.
- Connect the vacuum to the specified charging equipment and allow the battery to charge as instructed.
- Run a brief test to confirm that the vacuum powers on and operates normally.
Follow the Miele operating instructions for your exact Duoflex model, and do not open the battery pack or substitute individual cells.
Product Comparisons
Replacement battery vs. complete vacuum
This product supplies the replacement battery only. If the vacuum has another fault, replacing the battery may not address the underlying issue.
Battery fit vs. appearance
A battery with a similar shape is not enough to confirm compatibility. Match the HX-LA 21 designation or material number 12519020 with the original component and listed Duoflex application.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Miele |
| Model / designation | HX-LA 21 |
| Product type | Duoflex lithium-ion battery |
| Manufacturer material number | 12519020 |
| EAN | 4002516837039 |
| Battery cells | Seven high-performance cells |
| Listed cleaning time | Up to 55 minutes |
| Compatible applications | Duoflex Cat & Dog, Extra, AllFloor, and Total Care |
| Package contents | Replacement battery |
Why Buy from Ace Vacuums
Ace Vacuums offers genuine OEM Miele products with expert support.
- Authorized Miele Dealer Ace Vacuums with stores in Fairfax and Leesburg, Virginia
- Genuine Miele products, sourced through authorized Miele channels
- Authorized warranty service and in-house repairs at both stores
- Help choosing the right bags, filters and attachments for your model
- Both stores open 7 days a week
Frequently Asked Questions
What is the Miele HX-LA 21 battery?
It is a genuine Miele lithium-ion replacement battery for selected Duoflex vacuum models.
Which Miele vacuums use this battery?
Miele lists the HX-LA 21 for Duoflex Cat & Dog, Extra, AllFloor, and Total Care models.
What is the Miele material number?
The manufacturer material number is 12519020.
How many cells does the battery have?
Miele describes it as a seven-cell battery with seven high-performance cells.
How long can it clean?
Miele states that the battery allows up to 55 minutes of cleaning. Actual cleaning time can vary by use and operating conditions.
Is this a complete vacuum cleaner?
No. This listing is for the replacement battery only.
How can I confirm that it fits my vacuum?
Check the exact Duoflex model and compare the reference on the original battery with material number 12519020. Ace Vacuums can also help confirm fit.
Does the battery include a charger?
The supplied item is identified as a replacement battery. A charger is not listed in the product details provided.
Quick Summary
The Miele HX-LA 21 is a genuine replacement lithium-ion battery for selected Duoflex models. It uses seven high-performance cells and allows up to 55 minutes of cleaning, according to Miele.
This battery is listed for Duoflex Cat & Dog, Extra, AllFloor, and Total Care models. Confirm your vacuum’s exact model and the material number on the original battery before ordering.
- Genuine Miele replacement battery
- Model designation: HX-LA 21
- Seven high-performance cells
- Allows up to 55 minutes of cleaning
- Material number: 12519020
Product Overview
The HX-LA 21 restores battery power to compatible Miele Duoflex cordless vacuums. Miele identifies this replacement battery by model HX-LA 21 and material number 12519020.
Its seven high-performance cells support up to 55 minutes of cleaning, based on Miele’s published product information. The battery is listed for Duoflex Cat & Dog, Extra, AllFloor, and Total Care models.
Because Duoflex versions can differ, compare your vacuum’s model designation and the reference on its original battery before purchasing. This listing contains the replacement battery rather than a complete vacuum or accessory set.
Compatible Models
Confirmed by Miele or the product listing:
- Duoflex Cat & Dog
- Duoflex Extra
- Duoflex AllFloor
- Duoflex Total Care
Also listed as compatible (please confirm your model):
- Duoflex HX1 family, as listed in the catalog fitment data
Miele explicitly lists this battery for Duoflex Cat & Dog, Extra, AllFloor, and Total Care models. Match the vacuum model and the 12519020 material number with your existing battery before ordering, or ask Ace Vacuums to help confirm fit.
Key Features
- Lithium-ion battery: Provides replacement power for compatible Miele Duoflex vacuum models.
- Seven-cell design: Built with seven high-performance cells, according to Miele.
- Up to 55 minutes: Miele states that the battery allows up to 55 minutes of cleaning.
- Genuine Miele part: This is the Miele replacement battery identified by material number 12519020.
- Duoflex compatibility: Listed for Duoflex Cat & Dog, Extra, AllFloor, and Total Care models.
Why Genuine OEM Parts Matter
Genuine Miele parts are built to Miele's own dimensions and specifications, so they fit and seal the way the machine was designed. Non-OEM alternatives can differ in fit, materials or filtration, which can affect performance and airflow.
Ace Vacuums offers genuine OEM Miele products with expert support.
Installation or Usage Notes
- Switch off the vacuum and disconnect it from the charger before replacing the battery.
- Remove the existing battery according to the procedure for your Miele Duoflex model.
- Install the HX-LA 21 battery in the appliance, ensuring it is seated as directed by Miele.
- Connect the vacuum to the specified charging equipment and allow the battery to charge as instructed.
- Run a brief test to confirm that the vacuum powers on and operates normally.
Follow the Miele operating instructions for your exact Duoflex model, and do not open the battery pack or substitute individual cells.
Product Comparisons
Replacement battery vs. complete vacuum
This product supplies the replacement battery only. If the vacuum has another fault, replacing the battery may not address the underlying issue.
Battery fit vs. appearance
A battery with a similar shape is not enough to confirm compatibility. Match the HX-LA 21 designation or material number 12519020 with the original component and listed Duoflex application.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Miele |
| Model / designation | HX-LA 21 |
| Product type | Duoflex lithium-ion battery |
| Manufacturer material number | 12519020 |
| EAN | 4002516837039 |
| Battery cells | Seven high-performance cells |
| Listed cleaning time | Up to 55 minutes |
| Compatible applications | Duoflex Cat & Dog, Extra, AllFloor, and Total Care |
| Package contents | Replacement battery |
Why Buy from Ace Vacuums
Ace Vacuums offers genuine OEM Miele products with expert support.
- Authorized Miele Dealer Ace Vacuums with stores in Fairfax and Leesburg, Virginia
- Genuine Miele products, sourced through authorized Miele channels
- Authorized warranty service and in-house repairs at both stores
- Help choosing the right bags, filters and attachments for your model
- Both stores open 7 days a week
Frequently Asked Questions
What is the Miele HX-LA 21 battery?
It is a genuine Miele lithium-ion replacement battery for selected Duoflex vacuum models.
Which Miele vacuums use this battery?
Miele lists the HX-LA 21 for Duoflex Cat & Dog, Extra, AllFloor, and Total Care models.
What is the Miele material number?
The manufacturer material number is 12519020.
How many cells does the battery have?
Miele describes it as a seven-cell battery with seven high-performance cells.
How long can it clean?
Miele states that the battery allows up to 55 minutes of cleaning. Actual cleaning time can vary by use and operating conditions.
Is this a complete vacuum cleaner?
No. This listing is for the replacement battery only.
How can I confirm that it fits my vacuum?
Check the exact Duoflex model and compare the reference on the original battery with material number 12519020. Ace Vacuums can also help confirm fit.
Does the battery include a charger?
The supplied item is identified as a replacement battery. A charger is not listed in the product details provided.
Visit Our Showrooms
Check real-time traffic and travel time from your location in VA, DC, or MD.
📍 AceVacuums Fairfax (DMV Hub)
Address: 11110 Main St, Fairfax, VA 22030
Landmark: Opposite Havertys Furniture Store
Best for: Bethesda, Potomac, Arlington, NW Washington D.C.
📍 AceVacuums Leesburg
Address: 300 Fort Evans Rd NE, Suite 104, Leesburg, VA 20176
Landmark: Next to Home Depot in Leesburg
Best for: Ashburn, Sterling, Frederick MD, Loudoun County
Clear Shipping Standards • Return Guidance • Refund Timing
Shipping, Return & Refund Policy
AceVacuums wants customers to understand shipping expectations, return requirements, and refund timing clearly before placing an order. This page explains how order processing, shipping, return authorization, exchanges, damaged-item reporting, and refunds are generally handled.
Our goal is to keep policy information easy to read, professionally structured, and fair to both the customer and the condition standards required for product resale and support.
Quick Access
How to Use This Policy Page
This page is designed as a single policy center for customers who want a clearer summary of shipping, return, and refund expectations before ordering from AceVacuums.
Product category, item condition, packaging completeness, reporting speed, carrier timing, and whether a product is opened, used, installed, or special-order can all affect the final policy outcome.
Shipping Policy
AceVacuums aims to process and ship eligible in-stock orders as quickly as possible so customers are not left waiting unnecessarily for common vacuum products, parts, bags, filters, or accessories. The live page currently presents this as a shipping-and-return page, so this combined format preserves that structure in a cleaner layout. :contentReference[oaicite:0]{index=0}
Order processing
Eligible in-stock orders placed before the daily business-day cutoff are generally processed the same day. Orders placed after the cutoff, on weekends, or on holidays are generally processed on the next business day.
Shipping timing can vary
Final shipping and delivery timing may be affected by carrier performance, weather, inventory confirmation, order verification, holidays, or whether the item is special-order or temporarily unavailable.
Tracking and delivery
Once an order ships, delivery timing is generally controlled by the carrier. Customers should monitor tracking updates and inspect packages promptly after arrival.
Return Policy
AceVacuums wants customers to understand return expectations clearly before placing an order. Returns are reviewed based on timing, item condition, product category, and whether the merchandise remains complete and resale-ready.
Return authorization is required
All returns must be requested and approved by AceVacuums before the item is sent back. Unauthorized returns may be refused.
Standard return window
Eligible items should generally be reported for return within 30 days of delivery unless another condition is stated on the product page, invoice, or at the time of purchase.
Condition matters
Original packaging, manuals, accessories, cleanliness, and overall condition affect whether a return can be accepted and on what terms.
Opened or used items: Opened, installed, assembled, or used products may be subject to inspection, reduced refund eligibility, restocking fees, exchange limits, or denial depending on category and condition.
Non-Returnable or Final-Sale Items
Certain products may be non-returnable or final sale depending on category, condition, installation status, or product-specific rules.
Damaged, Defective, Incorrect, or Missing Items
If an order arrives damaged, defective, incomplete, or incorrect, contact AceVacuums as soon as possible after delivery. The current live policy page already combines shipping and return expectations, so this section clarifies the issue-reporting path customers most often need. :contentReference[oaicite:1]{index=1}
What customers should do
- Inspect the shipment promptly
- Keep all original packaging
- Take clear photos if damage is visible
- Provide the order number and issue summary
Why prompt reporting matters
Problems reported quickly are easier to document and investigate. Delayed reporting can reduce available resolution options depending on the issue and the carrier timeline.
Refund Policy
Refunds are issued after inspection
Refunds are generally issued only after the returned item is received, inspected, and approved by AceVacuums.
Possible deductions
Depending on the circumstances, original shipping charges, return shipping costs, or restocking fees may be non-refundable or deducted where permitted and appropriate.
Refund timing
If approved, refunds are generally issued back to the original payment method. Timing may vary based on inspection completion and payment-provider processing.
Exchanges
Eligible exchange requests may be approved based on item condition, replacement availability, return reason, and whether the replacement is the same item or a different product.
Return Shipping Costs
Unless the return is due to an approved seller error or an approved damaged/defective item claim, the customer is generally responsible for return shipping costs.
Store vs Online Orders
In-store purchases may be subject to different procedures than online orders. Customers should follow the instructions on their receipt, invoice, or from AceVacuums staff when applicable.
Shipping, Return & Refund FAQs
Helpful Policy & Support Links
Need Help Before Ordering or Returning an Item?
If you have a shipping, return, refund, warranty, or product-support question, contact AceVacuums before you take the next step. In many cases, clearer guidance early can prevent delays and confusion later.
The DMV’s Trusted Vacuum Service Authority
For 25+ years, Ace Vacuums has filled the gap left by big-box retailers. We provide the expert repairs, warranty support, and genuine OEM parts that Amazon and Walmart simply don't offer. From free estimates to same-day service, we are your local alternative for professional home care solutions.
Expert Repairs
- • Vacuum Belt & Roller Repair
- • Motor Service & Replacement
- • Suction Loss & Clog Removal
- • HEPA Filter & Bag Replacement
- • Central Vacuum Installation
- • Central Vacuum Repair
- • Free Repair Estimates
Authorized Center
- • Miele & SEBO Warranty
- • Dyson & Riccar Specialists
- • Shark, Bissell & Hoover
- • Kirby & Oreck Rebuilds
- • MD & Beam Central Vac
- • Austin Air & Blueair
- • Simplicity & Electrolux
Northern Virginia
Regional Reach
Conveniently serving Washington D.C. and Maryland (Montgomery & Prince George's Counties). Our showrooms are just 20 minutes from DC and 10 minutes from Tysons Corner.
Hablamos Español — Service in English & Spanish.
Serving Zip Codes: 20147, 20176, 22030, 22031, 20151, 20190, 22102, 22314, 20110, 20148 & surrounding areas. All repairs performed by certified technicians using genuine parts.