Shark XBATR640SL 21.6V 3.0/4.0Ah High-Capacity Replacement Battery for IONFlex
- 21.6V 6S1P battery pack built on 21700 cells for Shark IONFlex and Rocket Pet Pro platforms.
- Available in 3.0Ah and 4.0Ah capacities to provide longer run time.
- Tested against the original Shark battery, with OEM-matched latch and BMS handshake for IONFlex IF200/IF250 compatibility.
- Includes retail-ready packaging and transport and safety documentation for international shipping and customs clearance.
This is a high-capacity battery replacement for the IONFlex and Rocket Pet Pro platforms. The XBATR640SL is a 21.6V battery pack built on 21700 cells (6S1P). It is available in 3.0Ah and 4.0Ah options to provide longer run time. It has been tested against the original Shark battery and is compatible with the IONFlex IF200/IF250 with OEM-matched latch and BMS handshake.
The XBATR640SL is made by Dongguan Ruineng New Energy (Nuranu), a high-tech custom battery factory since 2012. It is made on a fully automated assembly line where every battery is tested at the end of the line. It is designed for Original Equipment Manufacturer (OEM) clients, vacuum repair distributors, and private-label brands that need the same fit and fade-free runtime as OEM products at factory-direct prices.
Compatible Host Tools
- Shark IONFlex IF200 / IF250 (extended runtime)
- Shark Rocket Pet Pro cordless vacuums
- 21.6V high-capacity IONFlex stick configurations
Target Applications
- Shark IONFlex (High-Capacity) Owners: A direct, fade-free Shark IONFlex (High-Capacity) battery replacement that restores full runtime when the original pack ages.
- Vacuum Repair & Service Shops: OEM-matched fit and verified charger handshake make the XBATR640SL an easy stock item for Shark Shark IONFlex (High-Capacity) repairs.
- Private-Label & E-commerce Sellers: Sourced with your branding and retail-ready packaging (blister / color box) for Amazon FBA and marketplace resale.
Core Technical Advantages
1. OEM-Matched Shark IONFlex (High-Capacity) Fit
Injection-molded shell and latch geometry match the original Shark IONFlex (High-Capacity) pack (IONFlex IF200 / IF250 (high-capacity) · Rocket Pet Pro) for a true drop-in fit.
2. 21700 Cells, True 3.0/4.0Ah
Grade-A 21700 cells in a 6S1P configuration deliver a genuine 3.0/4.0Ah at 21.6V — matched and aged for stable, fade-free runtime.
3. Verified BMS Handshake
BMS flashed with Shark IONFlex (High-Capacity)-specific firmware charges and reports correctly on the genuine Shark charger — resolving ‘not charging’ faults of worn original packs.
Technical Specifications
| Feature | Specification |
|---|---|
| Replacement Model | XBATR640SL |
| Compatible Vacuum | Shark IONFlex (High-Capacity) |
| OEM Series / Codes | IONFlex IF200 / IF250 (high-capacity) · Rocket Pet Pro |
| Nominal Voltage | 21.6V |
| Rated Capacity | 3.0/4.0Ah |
| Cell Type | 21700 · 4000mAh |
| Configuration | 6S1P |
| Housing Color | Black |
| Proprietary Mold | Yes (in-house) |
| Net Weight | 0.62 kg |
| Battery Dimensions | 175.3 × 80.8 × 70 mm |
| Qty per Carton | 24 pcs |
| Carton Gross Weight | 17.58 kg |
Packaging & Wholesale Logistics
The XBATR640SL is shipped in retail-ready packaging (blister or color box) designed for resale in stores and international shipping. Every batch of products is shipped with UN38.3 transport test reports, IEC 62133 safety certificates, MSDSs, and CE Declaration of Conformity. This helps ensure that customs can easily clear the products in the EU, US, UK, AU, and JP markets.
| Item | Details |
|---|---|
| MOQ | 100 units (catalog) · 500 units (private label) |
| Lead Time | 25–35 days standard · 18–22 days expedited |
| Payment | 30% T/T deposit + 70% against B/L |
| Warranty | 12 months |
Product Video
Frequently Asked by Distributors:
Is the XBATR640SL the high-capacity replacement battery for Shark IONFlex?
Yes, the XBATR640SL uses 21700 cells for a true 3.0Ah or 4.0Ah. It is a replacement battery for the Shark cordless vacuum IONFlex IF200 / IF250 and Rocket Pet Pro. It has an OEM-matched latch and contacts.
What is the MOQ for the XBATR640SL replacement battery?
The standard MOQ is 100 units for the XBATR640SL. You can get paid samples of 1–10 units to make sure they fit and to validate the BMS-handshake before placing an order. Private-label or custom-spec runs start at 500 units.
Is the XBATR640SL drop-in compatible with the original Shark charger or dock?
Yes, the XBATR640SL BMS is flashed with firmware designed specifically for that model. This ensures that it charges and reports correctly on the genuine Shark charger. The state-of-charge, authentication, and safety lockouts behave like the OEM Shark IONFlex (High-Capacity) pack. Every unit was checked at the end of the production line.
How do I replace the battery in my Shark IONFlex (High-Capacity)?
Replacing the Shark IONFlex (High-Capacity) battery is easy. First, power off the vacuum. Next, release the battery latch or clip. Then, remove the old pack. Finally, fit the XBATR640SL until it seats. You don’t need any tools or modifications. It charges on your Shark charger or dock.
How long does the XBATR640SL battery last per charge?
The XBATR640SL delivers a true 3.0/4.0Ah at 21.6V, matching or exceeding the runtime of the original pack. How long it actually lasts depends on the power mode and the accessory. The cells are matched and aged so that the pack will have the same capacity for its full cycle life.
Why is my Shark battery not charging or not holding charge — does a replacement fix it?
If your battery pack won’t hold a charge or charge properly, it’s likely that the batteries are nearing the end of their lifespan or the battery management system (BMS) has malfunctioned. The XBATR640SL has new Grade-A cells and a new BMS. This solves the “not charging” and “not holding charge” problems caused by a worn-out original pack.
Are these genuine Shark batteries or replacements?
The XBATR640SL is a high-quality aftermarket replacement — it is not an OEM Shark-branded pack. It is built with high-quality cells, a custom battery management system, and is designed to fit specific models. It has been tested against an original Shark IONFlex (High-Capacity) pack on all units and is backed by a 12-month warranty.
What cells and configuration does the XBATR640SL use?
The XBATR640SL uses high-quality 21700 cells (4000mAh each) arranged in a 6S1P configuration for a nominal 21.6V and a true rated capacity of 3.0/4.0Ah. Before assembly, cells are matched based on their capacity (±20 mAh) and internal resistance (±5 mΩ). You can specify your preferred cell brand (Samsung, LG, Panasonic, or BAK) when you place your order.
What is the warranty on the XBATR640SL?
All XBATR640SL replacement packs come with a 12-month warranty that covers manufacturing defects. Every batch of products is shipped with the following documents:
– UN38.3 test report
– IEC 62133 certificate
– MSDS
– CE Declaration of Conformity
These documents are needed to clear customs worldwide.
How is the XBATR640SL packed for shipping?
The XBATR640SL is shipped in master cartons of 24 pieces (17.58 kg gross). The battery is 175.3 mm long, 80.8 mm wide, and 70 mm tall. Every batch of these products has the necessary UN38.3 / IEC 62133 / CE documents.