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18500 7.4V 1100mAh JST 15C 2S Li-ion battery pack for HQ827 MJX T10 T11 T34 RC drone boat, front view showing cylindrical cells on white background
18500 7.4V 1100mAh JST 15C 2S Li-ion battery back view showing spec label with capacity, voltage, and discharge rate
18500 7.4V 1100mAh JST 15C 2S Li-ion battery JST plug closeup showing 2-pin connector for HQ823 MJX T34 RC drone boat

18500 7.4V 1100mAh JST 15C Replacement Battery For HQ827 823 871 / MJX T10 T11 T34 RC Drone Boat

Original price was: $16.99.Current price is: $11.80.

🔘 18500 7.4V 1100mAh | 🔋 2S Li-ion | 🔌 JST | 🚁 For HQ827/823/871 MJX T10/T11/T34 RC Drone Boat

2 in stock

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SKU: 18500-7.4-1100-JST 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

✅ Grade A Cells – Reliable performance

✅ CE / RoHS / UN38.3 Certified

✅ 90-Day Warranty

✅ 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 2 left in stock. Order now to avoid waiting.

Battery type: 18500 2S (2 x 18500 cells in series)
Capacity: 1100mAh
Rated voltage: 7.4V
Charge limit voltage: 8.4V (4.2V per cell)
Discharge rate: 15C (16.5A burst)
Battery type: Li-ion (Lithium-ion)
Connector type: JST (2-pin)
Dimensions: 52 × 36 × 18mm
Compatible with: HQ827, HQ823, HQ871; MJX T10, T11, T34 RC drones, boats, and vehicles
Package include: 1 x battery
Power up your RC drone, boat, or vehicle with this 18500 2S replacement battery. This 7.4V 1100mAh Li-ion pack delivers reliable energy with a 15C discharge rate — suitable for racing, aerial photography, and extended RC sessions. Built with two 18500 cells in series, this Li-ion pack provides stable voltage output and consistent performance. Features built-in protection against overcharge, over-discharge, and short circuits for safe operation. The JST connector ensures plug-and-play compatibility with your RC device. CE, RoHS, and UN38.3 certified.
Compatibility Note: Designed for HQ827, HQ823, HQ871 and MJX T10, T11, T34 RC models. Please verify your device uses a JST connector before purchasing. Professional installation recommended for vehicle applications.
Battery Care Tips: Avoid full discharge — keep battery level above 20%. Do not overcharge beyond 8.4V. Store in a cool, dry place. If swelling occurs, stop use immediately. Use a compatible 2S Li-ion charger.

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Frequently Asked Questions

This 18500 2S battery is compatible with HQ827, HQ823, HQ871 and MJX T10, T11, T34 RC drones, boats, and vehicles. It features a JST 2-pin connector and measures 52×36×18mm. Please verify your device uses a JST connector and has a battery compartment that fits these dimensions before ordering. If your original battery is 7.4V with JST plug, this is likely the correct replacement.

This 18500 2S battery has a capacity of 1100mAh and a rated voltage of 7.4V. Full charge voltage is 8.4V (4.2V per cell). The 15C discharge rate delivers up to 16.5A burst current, providing reliable power for racing and high-performance RC applications. For reference, similar batteries on AliExpress sell for $6-9, while Amazon lists them for $12-16 including shipping. This pack uses two 18500 Li-ion cells in series for stable voltage output.

Use only a charger designed for 2S (7.4V) Li-ion/Li-Po batteries. Set charger to Li-Po mode with 2S selected — full charge voltage is 8.4V. Recommended charge current: 1.1A (1C maximum). Balance charging is recommended to keep both cells at equal voltage. Never leave the battery unattended while charging. Do not discharge below 6.0V (3.0V per cell). For maximum lifespan, store at 40-60% charge at room temperature. If the battery swells or becomes hot, stop use immediately and recycle properly.

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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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