Xiaomi SCOOTER 4 ULTRA electric scooter charger

Xiaomi Scooter 4 Ultra Charger – 48V (54.6V) 2A – Ventilated, GEN2 connectors

54.6V – 2A charger for Xiaomi Scooter 4 Ultra electric scooter ( 48V Li-ion battery – 13S) . Designed for the 48V generation, it uses the specific connector of the Xiaomi Scooter 4 ULTRA and active ventilation cooling to maintain a stable charge and a controlled temperature during extended cycles.

---

🔧 Technical specifications

• Output voltage: 54.6V DC (end of charge of a 13S pack at 4.2V/cell)
• Charging current: 2A
• Connection: Specific Xiaomi Scooter 4 ULTRA connector
• Cooling: active ventilation – heat dissipation housing
• Indicator: Red LED = charging / Green = end of charging
• Protections: overvoltage, overload, overheating, short circuit, polarity reversal
• Compatibility: Xiaomi Electric Scooter 4 Ultra (48V – 13S)

---

📌 Original 53.6V vs. 54.6V: Why it Changes Everything

On the Xiaomi Scooter 4 Ultra electric scooter , the charger supplied by the manufacturer is often set to ≈ 53.6V instead of 54.6V. The idea is to prevent a scooter stored for a long time just after charging from remaining stored at 100% state of charge (SOC). In reality:

• Charging to 100% to drive straight away is not a problem; it is prolonged storage at 100% that accelerates aging.
• At 53.6V , you never start with 100% usable capacity : part of the full tank is missing.
• Importantly, most BMS only fully balance the cells near the maximum voltage . If 54.6V is never reached, balancing remains incomplete; over time, the cells become unbalanced , which can lead to outages and pack failures.

A 54.6V charger therefore allows you to: recover 100% capacity when you need it, correctly rebalance the pack at the end of charging, and stabilize the battery over time.

Tip: Fully charge to 54.6V **before riding**; for extended storage, leave the battery around 30–60% .

---

❓ FAQ – Xiaomi Scooter 4 Ultra (48V – 54.6V 2A)

➡️ 53.6V vs 54.6V: What's the difference, and why is it important?

53.6V (original charger) keeps the battery just under full charge to limit the impact in prolonged storage , but you lose useful capacity at each departure and the BMS does not fully reach the balancing zone . Conversely, 54.6V (nominal voltage of a 13S pack) allows you to recover 100% of the capacity and balance the cells at the end of the charge - crucial to avoid drifts and cut-offs in the long term.

➡️ Can I mix a 53.6V charger and this 54.6V?

Yes, occasionally. To maintain a good balance :

• Perform a full charge to 54.6V at least every 2–3 weeks .
• After the green light turns green, leave the charger connected for 30–60 min so that the BMS completes balancing (maintenance phase).

➡️ Is 2A suitable?

Yes. 2A is the standard current recommended for the Xiaomi 4 Ultra's 48V/13S chemistry: regular charging, controlled heating, and good longevity.

➡️ How to charge daily without damaging the battery?

Charge normally before riding. For extended rest , avoid 100%: a 40–60% range is ideal. Periodically perform a full charge to 54.6V to rebalance .

➡️ The LED turns green, should I unplug immediately?

Not necessarily. The red → green transition indicates the end of charging, but the BMS can still balance . Leave the charger for another 30–60 min , especially after several partial charges. Repeat every 2–3 weeks depending on your use of the Xiaomi 4 Ultra .

➡️ Typical charging time?

Varies depending on the exact capacity. At 2A , count approximately capacity (Ah) ÷ 2 hours (e.g. 12 Ah ≈ 6 h ). The end of the cycle may take longer due to balancing .

➡️ Compatibility: Does this charger work with other Xiaomi?

This model is for the Xiaomi Scooter 4 Ultra with his dedicated socket . It is not compatible with older models in 36V (42V) nor with older generation connectors.
However, it is compatible with the models: Xiaomi 4 Pro 2nd Gen (GEN2) , Xiaomi 5, Xiaomi 5 Pro, Navee S65, Navee N65i, Navee S40, Navee S60, Navee ST3 Pro.

---

📦 Delivery & Warranty

• Shipping 24/48 hours (France & Europe)
• 2-year warranty – each charger is tested before shipping
• Compatibility support: contact@source-it.fr

*Non-contractual photos – Source'IT.