Sale!
MS3602 5000mAh 7.5V Li-ion Polymer replacement battery for smart locks compatible with BL3601 PB3601 PB3602 PB3603, front view showing battery surface and connector
MS3602 5000mAh 7.5V replacement battery for smart locks, back view showing model number MS3602, capacity 5000mAh, voltage 7.5V, and rated energy 37.5Wh on spec label

MS3602 5000mAh 7.5V Battery for Smart Lock BL3601 PB3601 PB3602 PB3603 Replacement

Original price was: $59.99.Current price is: $49.99.

🔘 MS3602 5000mAh 7.5V | 🔋 Li-ion Polymer | 🔒 For Smart Lock BL3601 PB3601 PB3602 PB3603

8 in stock

No PayPal account? 💳 Pay with credit/debit card | 🛡️ PayPal Buyer Protected
SKU: MS3602 Category: Tags: , , , , , ,
📦 Shipping, Warranty & After-Sales Information (Click to expand ▼)

✅ Why Our Warranty Stands Out

Unlike marketplace sellers with short buyer protection windows, we handle claims directly — no automated disputes, no endless back-and-forth.

Compare✅ Qingsm Tech⚠️ eBay / AliExpress
Warranty Period90 days from delivery15-30 days from order confirmation
When It Starts📦 Upon delivery⚠️ Upon order confirmation (even before you receive it)
Claims HandlingWe do it directly — email usAutomated dispute system, seller dependent
After Window ExpiresStill can contact us for supportNo recourse, seller can ignore you

🔋 90-day warranty is the industry standard for replacement batteries. Batteries naturally lose capacity over time — this normal wear is not covered. Warranty applies to manufacturing defects only.

📦 Shipping Cost & Delivery Time (Economy Shipping from China)

📦 Note: Batteries are classified as hazardous goods and must be shipped via specialized channels, which may take slightly longer than standard couriers. Delivery times are estimates and may be affected by customs, weather, or other unforeseen circumstances. If your country is not listed in the table below, we are currently unable to ship batteries to that destination.

DestinationFreight (USD)Est. Delivery Time
United States$7.808–15 days
Canada$6.8018–30 days
Mexico$10.0030–60 days
Germany, France, United Kingdom, Greece$6.5018–30 days
Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Hungary, Ireland, Italy, Luxembourg, Netherlands, Norway, Poland, Portugal, Slovakia, Spain, Sweden, Switzerland$8.0018–30 days
Croatia, Finland, Lithuania, Latvia, Slovenia$8.0030–50 days
Bulgaria, Romania$14.0030–50 days
South Korea, Japan, Australia, New Zealand, Israel, Malaysia, Singapore, Thailand, Philippines, Kazakhstan$7.5018–30 days
United Arab Emirates, Saudi Arabia, Vietnam, Chile, Peru, Colombia, Brazil$18.0025–60 days

🇧🇷 Note for Brazil: Brazilian customs can occasionally cause delays of up to 80 days or more. And please indicate the recipient's CPF, as it is required for Brazilian customs and shipping. Thanks! We appreciate your understanding.

🇪🇺 Note for EU countries: Due to new EU customs regulations effective July 1, 2026, a flat tariff fee of $4.00 (approx. €3.50) applies to shipments to EU countries. This fee covers customs tariff, handling, and payment processing costs, and will be added at checkout. Thank you for your understanding.

🔋 Can't find your battery model? Use our FREE Battery Lookup Service – tell us your device and we'll find a match within 24 hours. 👉 battery.qingsm.tech/find-my-battery

Description

✅ Condition: Brand New – Never used, factory-tested quality

✅ 5000mAh High Capacity – Restores full battery life for smart locks using MS3602 / BL3601 / PB3601 / PB3602 / PB3603

✅ CE / RoHS / UN38.3 Certified

✅ 90-Day Warranty from delivery – Longer coverage than major platforms

✅ Ships in 3-7 days with tracking

🛡️ Shipping Protection Available at Checkout

✅ PayPal Buyer Protection included

⚠️ Low Stock Alert: Only 8 left in stock. Order now to avoid waiting.

Battery model: MS3602
Compatible with: BL3601, PB3601, PB3602, PB3603
Capacity: 5000mAh
Rated voltage: 7.5V
Charge limit voltage: 8.7V
Battery type: Li-ion Polymer (Grade A cells)
Rated energy: 37.5Wh
Weight: approx. 179g
Package include: 1 x battery
Restore reliable power to your smart lock with this MS3602 5000mAh replacement battery. The MS3602 battery series is specifically designed for smart lock systems, compatible with BL3601, PB3601, PB3602, and PB3603 battery models. Smart locks rely on consistent, dependable power for daily operation, remote access, and security monitoring. After years of daily use, the original battery capacity naturally degrades, leading to shorter intervals between charges or reduced performance during motorized locking and unlocking. This Li-ion Polymer battery restores the full 5000mAh capacity, ensuring your smart lock operates reliably around the clock. Built with grade A cells and multi-layer safety protection against overcharge, over-discharge, and short circuits. CE, RoHS, and UN38.3 certified for safe and reliable operation.
Designed for Smart Lock Reliability and Long-Term Performance: Smart locks are essential for home and office security, requiring stable power for motorized locking mechanisms, Wi-Fi or Bluetooth connectivity, and keypad or fingerprint sensors. The 5000mAh battery originally provided approximately 6-12 months of typical use depending on frequency of operation. After years of charging cycles, the original battery’s capacity drops significantly. Common symptoms include: the lock requiring more frequent battery changes, low battery warnings appearing sooner than expected, slower motorized locking/unlocking, or the lock failing to respond when the battery is low. This replacement restores the original battery life, ensuring your smart lock continues to protect your property reliably. The MS3602 battery is fully compatible with smart locks designed for BL3601, PB3601, PB3602, and PB3603 series batteries, featuring a user-replaceable design that makes installation simple and tool-free.
Compatibility Note: Fits smart locks using MS3602, BL3601, PB3601, PB3602, and PB3603 battery models. Please confirm your original battery model before ordering — the model number is printed on your current battery. This battery is designed for 7.5V smart lock systems. It is NOT compatible with 3.7V devices, 12V systems, or other voltage requirements.

Discover more from Battery.qingsm.tech

Subscribe to get the latest posts sent to your email.

Reviews

There are no reviews yet.

Be the first to review “MS3602 5000mAh 7.5V Battery for Smart Lock BL3601 PB3601 PB3602 PB3603 Replacement”

Your email address will not be published. Required fields are marked *
To receive the "Verified Owner" badge, please use the same email address you used when placing your order.

Frequently Asked Questions

The MS3602 battery for smart lock is compatible with BL3601, PB3601, PB3602, and PB3603 battery models. If you need a smart lock battery replacement for BL3601 or a PB3601 smart lock battery replacement, this MS3602 5000mAh battery is the exact match. For MS3602 battery for PB3602 compatibility and PB3603 battery replacement, this battery works with all these models as they share the same 7.5V, 5000mAh specification. Please confirm your original battery model before ordering — the model number is printed on your current battery. This MS3602 replacement battery is NOT compatible with 3.7V devices, 12V systems, or smart locks using different voltage requirements. If your smart lock battery drains quickly or shows low battery warnings frequently, this MS3602 replacement battery will restore full performance.

The MS3602 5000mAh 7.5V smart lock battery has a capacity of 5000mAh (37.5Wh) and a rated voltage of 7.5V, with a charge limit of 8.7V. This MS3602 7.5V 5000mAh Li-ion Polymer battery weighs approximately 179g and is built with grade A cells, CE, RoHS, and UN38.3 certified. For smart lock battery life after replacement, expect approximately 6-12 months of typical use depending on lock operation frequency. The BL3601 5000mAh battery performance provides consistent power for motorized locking mechanisms, Wi-Fi or Bluetooth connectivity, and keypad or fingerprint sensors. Charging the smart lock battery takes approximately 4-6 hours with the original charger, depending on the specific model. For best performance, allow 2-3 full charge cycles after installation to optimize the battery's performance. If your original battery now requires more frequent charging or triggers low battery warnings sooner than expected, this MS3602 replacement will restore the original battery life.

Replacing the MS3602 battery in your smart lock is simple and tool-free. For smart lock battery replacement guide: 1) Locate the battery compartment on your smart lock (typically on the interior side of the door). 2) Open the compartment cover — no tools required. 3) Remove the old MS3602, BL3601, PB3601, PB3602, or PB3603 battery. 4) Insert the new MS3602 battery, ensuring the connector aligns correctly. 5) Close the compartment cover securely. For MS3602 battery installation smart lock, no special tools or technical expertise required — this is a simple DIY replacement. For smart lock battery health maintenance: 1) Use only the original charger that came with your smart lock for optimal charging. 2) Avoid fully draining the battery regularly — recharge when the lock indicates low battery. 3) Store spare batteries at approximately 40-60% charge in a cool, dry place. 4) Avoid exposing the battery to high temperatures (above 40°C / 104°F). 5) Clean the battery contacts periodically with a dry cloth to ensure proper connection. For smart lock battery care tips, stop using immediately if the battery shows any swelling or damage.

Related products

✅ Ready to order?

This battery is in stock and ready to ship within 3-7 days. 90-day warranty included.

👉 Add to Cart Now