

šŖ¶ Product Description
Bring your robot vacuum back to life with the NASTIMA 14.4V Replacement Battery šāØ—a high-performance upgrade designed to keep your Xiaomi Roborock running longer and more efficiently. Built with advanced Li-ion technology and a high-capacity 6700mAh design, this battery delivers extended cleaning time and reliable power. With built-in safety protections and a durable design, it’s the perfect solution for restoring your vacuum’s performance and keeping your home spotless with less interruption.
š Specifications
- Voltage: 14.4V
- Capacity: 6700mAh
- Battery Type: Li-ion
- Size: 141 × 44 × 42 mm (5.55 × 1.73 × 1.65 in)
- Weight: 407g (0.9 lb)
- Compatibility: Xiaomi Roborock S50, S51, S52, S53, S55, S502, S5 Max, S6, T6 61/65 series, Mijia 1st & 2nd generation
- Protection System: Built-in BMS (Battery Management System)
š§ Key Features
ā
High-capacity 6700mAh battery for extended cleaning performance
ā
Compatible with multiple Xiaomi Roborock and Mijia models
ā
Built-in BMS for protection against overcharge, overheating, and short circuits
ā
Long-lasting performance with low self-discharge and no memory effect
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Provides up to 146 minutes of runtime in standard mode
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Designed for stable, safe, and efficient operation
š Why You’ll Love It
āļø Restore your vacuum’s performance without buying a new unit
āļø Enjoy longer cleaning sessions with fewer interruptions
āļø Reliable and safe power for everyday use
āļø Easy replacement for quick installation
āļø Great value upgrade for your smart cleaning system
š¦ What’s in the Box?
- 1 × NASTIMA 14.4V Li-ion Replacement Battery
š” Tips for Use
- Fully charge the battery before first use
- For long-term storage, charge and discharge every 3 months
- Always check size, plug, and voltage compatibility before purchase
š¦ Fastest Shipping Guaranteed
Unlike other stores that offer cheaper products but come with delivery delays of up to 30 days, we take pride in offering fast and reliable shipping. Based in the USA, we guarantee that your order will be delivered within 7–14 days, with no unexpected delays (unless under rare circumstances). When you shop with us, you’re choosing speed and satisfaction. š¦š
ā FAQs
Q: Is this battery compatible with my Roborock model?
A: It works with multiple models including S50, S51, S5 Max, S6, and more. Please compare size, plug, and voltage before purchasing.
Q: How long does the battery last on a full charge?
A: It can support up to 146 minutes of runtime in standard cleaning mode.
Q: Is it safe to use?
A: Yes, it features a built-in BMS system that protects against overcharging, overheating, and short circuits.
Q: Do I need to charge it before first use?
A: Yes, it’s recommended to fully charge the battery before initial use.
Q: What warranty is included?
A: The product comes with a 35-day free return policy and a 1-year warranty for peace of mind.
| Battery Capacity | 6700 Milliamp Hours |
| Battery Cell Type | Lithium Ion |
| Unit Count | 1.0 Count |
| Battery Cell Composition | Lithium Ion |
| Model Number | MI14-LI67-S50NA |
| Battery Weight | 410 Grams |
| Voltage | 144 Volts |
| Model Name | MI14-LI67-S50NA |
| Number of Batteries | 1 Lithium Ion batteries required. (included) |
| Item Type Name | Battery |
| Compatible Phone Models | Xiaomi Roborock S50 S51 S52 S53 S55 S502 S5 Max S6; T6 61 65 full series, Mijia 1st and 2nd |