7.4V 5000mAh High Capacity Smart Lock Lithium Battery Replacement For ZNS-09E1 Smart Lock

Specifications

Company Profile

Product Description

Never worry about being locked out again with the Upgraded 7.4V 5000mAh High-Capacity Replacement Battery for the ZNS-09E1 Smart Lock. While standard batteries often struggle to keep up with the demands of modern smart home security, our premium Lithium-ion pack is engineered for longevity and reliability.

This battery features a precision-molded design measuring 1860102mm, ensuring a perfect, rattle-free fit for the ZNS-09 and ZNS-09E1 series. With a significant capacity boost to 5000mAh, it offers up to 25% more standby time compared to the original 4200mAh versions. Whether your current battery is failing to hold a charge or you simply want a high-performance backup, this power pack provides the consistent voltage required for smooth motor operation and stable Wi-Fi/Bluetooth connectivity.

Application

•Exact OEM Replacement: The primary choice for replacing aging or defective batteries in ZNS-09E1 and ZNS-09 smart lock models.

•High-Traffic Properties: Ideal for Airbnb hosts, rental property managers, and busy households where the lock is cycled dozens of times daily.

•Extreme Climate Performance: Reliable power delivery in various environments, ensuring your smart home remains accessible from winter freezes to summer heat.

•Smart Security Maintenance: A critical component for maintaining the peak performance of biometric finger-print scanners and integrated cameras that require high instantaneous current.

Workers Production

Product Package

Competitive Advantage:

I.Extended Energy Density:

Our 5000mAh Grade-A cells outperform standard market alternatives, reducing the frequency of charging cycles and extending the overall lifespan of the battery.

II.Smart Battery Management System (BMS):

Integrated with an advanced protection circuit that shields against over-charging, over-discharging, short-circuits, and voltage surges, prioritizing the safety of your home and lock.

III.True Plug-and-Play Design:

Features the exact connector interface and physical dimensions ($18 \times 60 \times 102$ mm) as the original, requiring zero tools or modifications for installation.

IV.Optimized Discharge Curve:

Engineered to maintain a steady 7.4V output even at low capacity, preventing the "sudden death" of your smart lock and avoiding false low-battery alarms.

V.Eco-Friendly Longevity:

Supports over 500+ full charge cycles, making it a sustainable and cost-effective alternative to frequent battery replacements.

Certification

FAQ

Q1: Will this 5000mAh battery fit if my original battery was only 4200mAh? 

Yes, perfectly. The 5000mAh and 4200mAh ratings refer to the energy capacity (how long it lasts), not the physical size. As long as your battery code is ZNS-09E1 or ZNS-09 and the dimensions are 1860102mm, this high-capacity version is a 100% compatible upgrade that will give you longer use between charges.

Q2: How do I know if this is the right battery for my smart lock? 

 Please check two things:

•The model number printed on your current battery (it should say ZNS-09 or ZNS-09E1).

•The physical dimensions (18mm thickness, 60mm width, 102mm length). If these match, our battery will fit your lock perfectly. [中文] 请确认以下两点：

Q3: Does the battery come with a built-in charging port? 

This depends on the specific variant. Most ZNS-09E1 batteries feature a built-in USB-C or Micro-USB port for direct charging, while others charge via the lock's dock. Please refer to our product images to confirm the charging interface. (Note: Charging cable is usually included in the package).

Q4: How long will one full charge last? 

With the upgraded 5000mAh capacity, a single charge typically lasts 6 to 9 months, depending on how often the lock is used and whether Wi-Fi/video features are enabled. Cold weather may slightly reduce battery efficiency.

Q5: Is it safe to leave the battery charging overnight?

Yes. Our battery is equipped with an integrated Battery Management System (BMS) that automatically stops the current once the cells are fully charged. This prevents overcharging and ensures the safety of your home.