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18500 7.4V 1100mAh 2S Li-Po Battery with SM-4P Plug for Huanqi 960 747A RC Aircraft Boat 51x37x18mm

Original price was: $14.99.Current price is: $12.99.

🔘 18500 1100mAh 7.4V 2S | 🔋 Li-Po | 🔌 SM-4P | ✈️ For Huanqi 960 / 747A RC Aircraft / Boat (51x37x18mm)

8 in stock

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SKU: 18500-7.4-1100-SM4P 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.

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Description

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

CE / RoHS / UN38.3 Certified – Safety tested

1100mAh 2S 7.4V Li-Po – SM-4P connector

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 type: 18500 2S Li-Po (Lithium Polymer)
Capacity: 1100mAh
Nominal voltage: 7.4V (2 cells in series)
Charge limit voltage: 8.4V (4.2V × 2)
Connector: SM-4P (4-pin balance connector)
Dimensions: 51 × 37 × 18mm
Compatible with: Huanqi 960, Huanqi 747A, RC aircraft, speed boats, high-speed cars, racing boats
Package include: 1 x battery
Power up your Huanqi 960 or 747A RC vehicle with this 18500 7.4V 1100mAh 2S Li-Po battery. Engineered for RC aircraft, speed boats, and high-speed vehicles, this compact lithium-polymer pack delivers reliable power for extended flight or driving sessions. Featuring a standard SM-4P connector for plug-and-play compatibility. Built-in multi-layer safety protection guards against overcharge, over-discharge, and short circuits. Made with grade A cells. CE, RoHS, and UN38.3 certified for safety compliance.
Compatibility Note: Designed for Huanqi 960, Huanqi 747A, and compatible RC vehicles using 2S Li-Po batteries with SM-4P connector. Due to variations across different models, please verify your device’s battery compartment size (51×37×18mm) and connector type before purchasing.
Battery Care Tips for RC Li-Po Batteries: Use a compatible 2S Li-Po balance charger. Never leave charging unattended. Store at 3.8V per cell when not in use. Avoid full discharge (keep above 3.0V per cell). If swelling occurs, stop use immediately and dispose of properly. Cool down before recharging.


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Frequently Asked Questions

This 18500 7.4V 1100mAh Li-Po battery is designed for Huanqi 960, Huanqi 747A, and compatible RC aircraft, speed boats, high-speed cars, and racing boats that use a 2S battery with SM-4P connector. Due to variations across different models, please verify your vehicle's battery compartment size (51×37×18mm) and connector type before purchasing.

1S = 3.7V (single cell), 2S = 7.4V (two cells in series), 3S = 11.1V (three cells). This is a 2S battery, delivering 7.4V nominal voltage with 8.4V at full charge. Always use a 2S Li-Po balance charger for this battery. Never mix different cell counts in the same device. If you need a higher voltage for larger RC vehicles, consider a 3S battery, but check your device's voltage rating first.

Actual runtime depends on your vehicle's power draw — motor size, propeller/paddle size, weight, and throttle usage. For a typical Huanqi 960 RC aircraft, you can expect approximately 8-15 minutes of flight time on a full charge. For speed boats, runtime may be 6-12 minutes depending on speed settings. Always carry spare batteries for extended sessions. For best performance and longevity, avoid completely discharging the battery (keep above 20%).

✅ Ready to order?

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

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