Two 423450 800mAh 3.7V Li-Po batteries with protection board for DIY projects 4.2×34×50mm
2Pcs 423450 800mAh 3.7V Li-Po Battery with Protection Board (4.2×34×50mm) - Image 2

2Pcs 423450 800mAh 3.7V Li-Po Battery with Protection Board (4.2×34×50mm)

$9.99

✅ Brand New | 🔋 2× 423450 800mAh 3.7V Li-Po | 🛠️ For DIY Projects (4.2×34×50mm)

8 in stock

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SKU: 423450-2PCS 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.

🔋 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 – Premium grade A cells

✅ Built-in Protection PCB – Overcharge, over-discharge, short circuit protection

✅ 500 Cycle Life – Maintains 80% capacity

✅ CE / RoHS Certified – Safety tested

✅ 90-Day Warranty – Hassle-free replacement

✅ Ships in 3-7 days with tracking – Fast delivery

🛡️ Shipping Protection Available at Checkout – Covered against loss, damage, or theft

✅ PayPal Buyer Protection included – Secure checkout

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

Battery model: 423450 (2-Pack)
Battery capacity: 800mAh per cell
Rated voltage: 3.7V
Charge limit voltage: 4.26V
Discharge cut-off: 2.75V
Standard charge/discharge current: 0.5C (400mA)
Dimensions: 4.2 × 34 × 50mm per cell
Weight: 15g per cell
Protection: Built-in PCB for overcharge, over-discharge, short circuit, and overcurrent
Cycle life: 500 cycles maintaining ≥80% capacity
Operating temperature: Charge: 0-45°C, Discharge: -20-60°C
Package include: 2 x batteries
Power your DIY projects or custom electronic devices with this 2-pack of 423450 800mAh 3.7V Li-Po batteries. Each cell features a built-in protection circuit board (PCB) for safe operation, guarding against overcharge, over-discharge, short circuit, and overcurrent. Made with grade A cells. CE and RoHS certified for safety compliance.
Compatibility Note: This battery is designed for DIY projects and custom applications. Please verify your device’s battery compartment size (4.2×34×50mm) and voltage requirements before purchasing.
Battery Care Tips: Use a compatible Li-Po charger. Avoid full discharge (keep above 3.0V per cell). Store in a cool, dry place. If swelling occurs, stop use immediately. For optimal battery life, charge at 0.5C (400mA) or lower.

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Frequently Asked Questions

These 800mAh 3.7V Li-Po batteries are designed for DIY projects and custom applications. Typical uses include small Bluetooth devices, wearables, portable electronics, and custom gadgets. Please verify your device's battery compartment size (4.2×34×50mm) and voltage requirements before purchasing.

Yes, each battery in this 2-pack comes with a built-in protection circuit board (PCB) that guards against overcharge, over-discharge, short circuit, and overcurrent. The protection board ensures safe operation during charging and discharging.

We offer a 90-day warranty against manufacturing defects. If you experience any issues with the battery, please contact us and we'll help resolve the problem. Orders ship in 3-7 days with tracking provided. Shipping protection is available at checkout. For full details, please visit our "What to Know Before You Buy" page.

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

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