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HB572727EFW 530mAh 3.88V Li-Polymer replacement battery for Huawei Watch 4 and Watch GT4 41mm, front view showing battery label and connector flex cable
HB572727EFW 530mAh 3.88V replacement battery for Huawei Watch 4 and Watch GT4 41mm, back view showing model number HB572727EFW, capacity 530mAh, and voltage 3.88V on spec label

HB572727EFW 530mAh 3.88V Li-Polymer Replacement Battery for Huawei Watch 4 / Watch GT4 41mm

Original price was: $28.99.Current price is: $15.99.

🔘 HB572727EFW 530mAh 3.88V | 🔋 Li-Polymer | 📱 Compatible with Huawei Watch 4 / Watch GT4 41mm

8 in stock

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SKU: hb572727efw 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
Ireland, Austria, Belgium, Poland, Denmark, Switzerland, Portugal, Norway, Slovakia, Spain, Hungary, Italy, Czech Republic, Luxembourg, Netherlands, Sweden, Cyprus$8.0018–30 days
Croatia, Finland, Lithuania, Latvia, Slovenia$8.0030–50 days
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.

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Description

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

✅ 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

✅ 100% Compatibility Guarantee – If it doesn’t fit, we’ll refund you. No questions asked.

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

Battery model: HB572727EFW (Replaces OEM HB572727EFW)
Capacity: 530mAh (Rated) / 2.05Wh | 536mAh (Typical) / 2.07Wh
Rated voltage: 3.88V
Charge limit voltage: 4.48V
Battery type: Li-Polymer
Cycle life: 500+ cycles retains ≥80% capacity
Compatible with: Huawei Watch 4 (1.5-inch AMOLED, eSIM, 5ATM), Huawei Watch GT4 41mm (1.32-inch AMOLED, 5ATM)
Package include: 1 x battery
Restore the long-lasting battery life of your Huawei smartwatch with this HB572727EFW 530mAh replacement battery. The Huawei Watch 4 features a 1.5-inch AMOLED display, eSIM support, and 5ATM water resistance[reference:0]. The Watch GT4 41mm features a 1.32-inch AMOLED display and 5ATM water resistance[reference:1]. This Li-Polymer battery delivers the factory-rated 530mAh capacity — providing reliable power for all-day health tracking, notifications, and smartwatch functions. For reference, third‑party retailers sell this battery for approximately $16 to $42.
Built with Grade A Li-Polymer cells and multi-layer safety protection against overcharge, over-discharge, short circuit, and overcurrent. CE, RoHS, and UN38.3 certified for safe transport and use. With a cycle life of 500+ full charge cycles, this replacement battery is designed for long-term reliability. The HB572727EFW replacement battery for Huawei Watch GT4 41mm meets or exceeds original specifications[reference:2].
⚠️ Watch GT4 41mm vs. Watch 4 Battery Note: The HB572727EFW battery is used in both the Huawei Watch GT4 41mm (rated 490mAh, 1.9Wh[reference:3]) and the Huawei Watch 4 (rated 530mAh, 2.05Wh[reference:4]). The battery is identical in physical dimensions and connector — the capacity difference comes from different battery cell sources (ATL vs. Sunwoda). If your original battery label shows 530mAh (Watch 4) or 490mAh (Watch GT4 41mm), this HB572727EFW is the correct replacement for both.
Compatibility Note: Please power down your watch and check your original battery label before ordering. This battery is compatible with Huawei Watch 4 and Huawei Watch GT4 41mm. The watch supports wireless magnetic charging — a full charge takes approximately 1 hour[reference:5]. The watch has a 5ATM water resistance rating — professional installation is strongly recommended to maintain this protection after replacement.
Battery Care Tips: Avoid full discharge — keep battery level above 20%. Do not expose to high temperatures or direct sunlight. New batteries require 3-5 full charge cycles to reach optimal capacity. If you don’t use the watch for a long time, store it in a dry and cool place and charge it fully once every three months. If you notice swelling or overheating, stop use immediately.

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Frequently Asked Questions

The HB572727EFW battery for Huawei Watch 4 is compatible with Huawei Watch 4 (1.5-inch AMOLED display, eSIM support, 5ATM water resistance, 530mAh rated capacity) and Huawei Watch GT4 41mm (1.32-inch AMOLED display, 5ATM water resistance, rated 490mAh capacity). The HB572727EFW Li-Polymer replacement battery for Huawei Watch GT4 41mm is a direct OEM replacement for both models. If your Huawei Watch 4 battery replacement is needed because the watch drains quickly or won't hold a charge, this is the correct battery. Please verify your watch model on the back case and check the battery model HB572727EFW printed on your existing battery before purchasing. NOT compatible with Huawei Watch GT4 46mm (which uses HB572728EGW) or Watch GT3 Pro series.

The HB572727EFW 530mAh 3.88V battery has a rated capacity of 530mAh (2.05Wh) and a typical capacity of 536mAh (2.07Wh). Rated voltage is 3.88V, charge limit voltage is 4.48V. The HB572727EFW 530mAh Li-Polymer battery is built with Grade A cells and is CE, RoHS, and UN38.3 certified. The HB572727EFW battery with 2.05Wh energy supports wireless magnetic charging — a full charge takes approximately 1 hour (25°C ambient temperature)[reference:6]. The Huawei Watch 4 supports up to 3 days of battery life in standard mode and up to 14 days in ultra-long battery life mode[reference:7]. With a cycle life of 500+ full charge cycles, this HB572727EFW replacement battery is designed for long-term durability. For best results, always use the original Huawei wireless magnetic charger that came with your watch.

Professional installation is strongly recommended for Huawei Watch 4 battery replacement. The watch has a sealed design with a 5ATM water resistance rating — it can withstand splashes, rain, and swimming up to 50 meters, but is not designed for diving. The process to replace HB572727EFW battery in Huawei Watch 4 requires heating to soften adhesive, careful prying to avoid damaging the AMOLED display, and proper resealing with fresh adhesive to maintain water resistance after replacement. Water resistance may be compromised if the watch is not properly resealed. If you choose DIY smartwatch battery replacement, watch a full teardown tutorial before starting, use a heat gun at low temperature (no more than 70°C), use plastic tools to avoid damaging internal components, and never reuse a battery after removal. Third-party repair shops typically charge $20-40 for labor.

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