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Robot Vacuum 14.6V · 2.5Ah
Xiaomi TW01-4S1P 14.6V 2.5Ah
Xiaomi Robot Vacuum Battery Replacement

Xiaomi TW01-4S1P 14.6V 2.5Ah Robot Vacuum Replacement Battery

Drop-in Xiaomi robot vacuum battery replacement for the compact Xiaomi / Mijia robotic vacuum variant (STYTJ02YM). The TW01-4S1P is a 14.6V 2.5Ah pack (4S1P, 18650), verified against the original Xiaomi battery with BMS handshake on the genuine charging base.

Voltage14.6V
Capacity2.5Ah
Cell Type18650 cells
Configuration4S1P
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Overview

Drop-in Xiaomi robot vacuum battery replacement for the compact Xiaomi / Mijia robotic vacuum variant (STYTJ02YM). The TW01-4S1P is a 14.6V 2.5Ah pack (4S1P, 18650), verified against the original Xiaomi battery with BMS handshake on the genuine charging base.

Manufactured by Dongguan Ruineng New Energy (Nuranu) — a high-tech custom battery factory since 2012 — the TW01-4S1P is produced under a fully automated assembly line with 100% aging and end-of-line testing. It is engineered for OEM clients, robot vacuum repair distributors, and private-label brands that need OEM-equivalent fit and fade-free runtime at factory-direct pricing.

Xiaomi TW01-4S1P 14.6V 2.5Ah view 1Xiaomi TW01-4S1P 14.6V 2.5Ah view 2Xiaomi TW01-4S1P 14.6V 2.5Ah view 3Xiaomi TW01-4S1P 14.6V 2.5Ah view 4

Compatible Xiaomi Models

  • Xiaomi Mi Robot Vacuum (compact variant)
  • Mijia STYTJ02YM robot vacuum
  • Xiaomi Mi Home robotic vacuum platform

Target Applications

  • Xiaomi / Mijia Robot Vacuum Owners: A direct, fade-free Xiaomi / Mijia Robot Vacuum battery replacement that restores full runtime when the original pack ages.
  • Robot Vacuum Repair & Service Shops: OEM-matched fit and verified charger handshake make the TW01-4S1P an easy stock item for Xiaomi Xiaomi / Mijia Robot Vacuum 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 Xiaomi / Mijia Robot Vacuum Fit

Injection-molded shell and latch geometry match the original Xiaomi / Mijia Robot Vacuum pack (Xiaomi / Mijia robot vacuum (STYTJ02YM) · compact variant) for a true drop-in fit.

2. 18650 Cells, True 2.5Ah

Grade-A 18650 cells in a 4S1P configuration deliver a genuine 2.5Ah at 14.6V — matched and aged for stable, fade-free runtime.

3. Verified BMS Handshake

BMS flashed with Xiaomi / Mijia Robot Vacuum-specific firmware charges and reports correctly on the genuine Xiaomi charger — resolving 'not charging' faults of worn original packs.

Product Video

Factory assembly line, BMS testing, and TW01-4S1P fit demonstration footage. Contact sales for additional product videos.

Technical Specifications

FeatureSpecification
Replacement ModelTW01-4S1P
Compatible Robot VacuumXiaomi / Mijia Robot Vacuum
OEM Series / CodesXiaomi / Mijia robot vacuum (STYTJ02YM) · compact variant
Nominal Voltage14.6V
Rated Capacity2.5Ah
Cell Type18650 · 2500mAh
Configuration4S1P
Housing ColorBlack
Proprietary MoldYes (in-house)
Net WeightConfirmed at order
Battery DimensionsConfirmed at order
Qty per Carton48 pcs
Carton Gross WeightConfirmed at order

Packaging & Wholesale Logistics

The TW01-4S1P ships in retail-ready packaging (blister or color box) engineered for marketplace resale and international freight. Every batch ships with UN38.3 transport test report, IEC 62133 safety certificate, MSDS, and CE Declaration of Conformity for smooth customs clearance in EU, US, UK, AU, and JP markets.

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

Frequently Asked by Distributors

Does the TW01-4S1P fit the compact Xiaomi / Mijia robot vacuum?
Yes. The TW01-4S1P is a Xiaomi robot vacuum battery replacement for the compact Mijia STYTJ02YM variant — a true 14.6V 2.5Ah pack with OEM-matched fit.
What is the MOQ for the TW01-4S1P replacement battery?
Standard MOQ is 100 units for the TW01-4S1P. Paid samples of 1–10 units are available for fit and BMS-handshake validation before a production order. Private-label or custom-spec runs start at 500 units.
Is the TW01-4S1P drop-in compatible with the original Xiaomi charger or dock?
Yes. The TW01-4S1P BMS is flashed with model-specific firmware so it charges and reports correctly on the genuine Xiaomi charger — state-of-charge, authentication, and safety lockouts behave like the OEM Xiaomi / Mijia Robot Vacuum pack. Validated on 100% of units at end-of-line.
How do I replace the battery in my Xiaomi / Mijia Robot Vacuum?
Replacing the Xiaomi / Mijia Robot Vacuum battery is straightforward: power off the robot vacuum, release the battery latch or clip, remove the old pack, and fit the TW01-4S1P until it seats. No tools or modification needed — it charges on your genuine Xiaomi charger or dock.
How long does the TW01-4S1P battery last per charge?
The TW01-4S1P delivers a true 2.5Ah at 14.6V, matching or exceeding original-pack runtime. Actual runtime depends on power mode and accessory. Cells are matched and aged so the pack holds capacity over its full cycle life.
Why is my Xiaomi battery not charging or not holding charge — does a replacement fix it?
A pack that won't hold charge or won't charge usually means end-of-life cells or a failed BMS. A new TW01-4S1P with fresh Grade-A cells and a fresh BMS resolves 'not charging' and 'not holding charge' faults caused by a worn-out original pack.
Are these genuine Xiaomi batteries or replacements?
The TW01-4S1P is a high-quality aftermarket replacement — not an OEM Xiaomi-branded pack. It is built with Grade-A tier-1 cells, a model-specific BMS, and OEM-matched fit, validated against an original Xiaomi / Mijia Robot Vacuum pack on 100% of units, and backed by a 12-month warranty.
What cells and configuration does the TW01-4S1P use?
The TW01-4S1P uses Grade-A 18650 cells (2500mAh each) in a 4S1P configuration for a nominal 14.6V and a true rated capacity of 2.5Ah. Cells are matched by capacity (±20 mAh) and internal resistance (±5 mΩ) before assembly. Preferred cell brand (Samsung / LG / Panasonic / BAK) can be specified at order.
What is the warranty on the TW01-4S1P?
All TW01-4S1P replacement packs carry a 12-month warranty against manufacturing defects. Every batch ships with UN38.3 test report, IEC 62133 certificate, MSDS and CE Declaration of Conformity for smooth customs clearance worldwide.
How is the TW01-4S1P packed for shipping?
The TW01-4S1P ships 48 pcs per master carton. Battery dimensions None. Every batch ships with full UN38.3 / IEC 62133 / CE documentation.

Need a Custom Quote or Technical Details?

Our engineering team is ready to discuss specifications, certification, MOQ, and OEM / private-label customization for the TW01-4S1P.

✉ Email Sales 📱 WhatsApp ☎ +86 13823274651

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