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7000mAh 7.4V 2S Li-Po battery with XT60 connector for Henglong RC tank 3818 3889 3809
7000mAh 7.4V 2S Li-Po battery with L6.2 connector for Henglong RC tank 3818 3889 3809
Closeup of L6.2 connector on 7000mAh 7.4V 2S Li-Po battery for Henglong RC tank

18650 7000mAh 7.4V 2S Li-Po Battery with L6.2 or XT60 Plug for Henglong RC Tank (3818 / 3889 / 3809)

Original price was: $34.99.Current price is: $24.99.

🔘 18650 7000mAh 7.4V 2S Li-Po | 🔋 High-Rate | 🔌 L6.2 / XT60 | 🚀 For Henglong RC Tank 3818 3889 3809

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SKU: 18650-7000mAh-7.4v-3818-3889-3809 Category: Tags: , , ,
📦 Shipping, Warranty & After-Sales Information (Click to expand ▼)

✅ Why Our Warranty Stands Out

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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, Czech Republic, Denmark, Estonia, Hungary, Ireland, Italy, Luxembourg, Netherlands, Norway, Poland, Portugal, Slovakia, Spain, Sweden, Switzerland, Ukraine$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: New – Factory-tested quality & Warranty

✅ 18650 7000mAh High Capacity – 45-90 minutes runtime

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

Battery type: 18650 (2S Li-Po, 2 cells in series)
Capacity: 7000mAh
Rated voltage: 7.4V
Charge limit voltage: 8.4V (4.2V × 2)
Connector options: L6.2 or XT60 (select above)
Battery type: Li-Polymer (18650 cells)
Cell configuration: 2S1P (2 cells in series)
Compatible with: Henglong RC Tanks (3818, 3889, 3809, and similar models)
Package include: 1 x battery
Extend your Henglong RC tank battles with this 18650 7000mAh 7.4V 2S Li-Po battery. Designed for 3818, 3889, and 3809 models, this high-rate battery delivers sustained power for extended maneuvers. The 18650 cell format offers excellent durability and consistent voltage output. With 7000mAh capacity, you get significantly longer runtime than standard 2000-3000mAh packs — typically 45-90 minutes of continuous use depending on driving style. Choose between L6.2 (original Henglong connector) or XT60 (universal upgrade) to match your tank’s setup. Built with grade A cells and multi-layer safety protection against overcharge, over-discharge, and short circuits. CE, RoHS, and UN38.3 certified.
Compatibility Note: Compatible with Henglong RC tanks and other 2S Li-Po vehicles requiring 7000mAh capacity. Select the correct connector (L6.2 or XT60) for your tank. Please check your original battery connector before purchasing. Professional installation recommended.
Charging Instructions: Use only a balance charger designed for 2S (7.4V) Li-Po batteries. Set charger to Li-Po mode with 2S selected — full charge voltage is 8.4V. Recommended charge current: 7.0A (1C maximum). For battery longevity, charging at 3.5A-5A is recommended. Never leave the battery unattended while charging. Do not discharge below 6.0V (3.0V per cell).
Battery Care Tips: Avoid full discharge — store at 3.8V per cell when not in use. For maximum lifespan, allow the battery to cool before recharging. Store at room temperature away from direct sunlight. If swelling occurs, stop use immediately. Balance charge every cycle for optimal cell health.

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Additional information

Connector Type

XT60, L6.2

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Frequently Asked Questions

This battery pack uses two 18650 Li-Po cells connected in series (2S1P), delivering 7.4V with 7000mAh capacity. The 18650 format (18mm diameter × 65mm length) offers excellent durability, consistent voltage output, and longer cycle life than soft-pack Li-Po cells. For Henglong RC tanks 3818, 3889, and 3809, this 18650 2S pack is available with two connector options:
- L6.2 Plug: Original Henglong connector for direct replacement
- XT60 Plug: Universal high-current connector for upgraded tanks

Check your original battery connector before ordering. For reference, AliExpress sells similar 18650 2S 7000mAh batteries for $15-25, and Amazon for $25-35.

Runtime depends on driving style and tank model. With 7000mAh capacity from these 18650 cells, typical Henglong RC tank operation ranges from 45 to 90 minutes of continuous use. This is significantly longer than standard 2000-3000mAh batteries (15-30 minutes). The 18650 cells provide stable voltage throughout the discharge curve, ensuring consistent performance. Actual runtime may vary based on terrain, weight, and throttle usage. For maximum battery life, avoid running until complete discharge — stop when you notice reduced speed. Henglong factory batteries typically last 300-500 cycles; quality 18650 cells can achieve 500-800 cycles with proper care.

Use only a balance charger designed for 2S (7.4V) Li-Po batteries. Set charger to Li-Po mode with 2S selected — full charge voltage is 8.4V (4.2V per cell). Key recommendations:
- Charge current: 3.5A-5A (0.5C-0.7C) for longevity, up to 7A (1C) maximum
- Always balance charge — this 2S1P pack needs both cells balanced
- Never leave the battery unattended while charging
- Do not discharge below 6.0V (3.0V per cell)
- For storage (over 7 days), charge/discharge to 3.8V per cell (7.6V total)
- Store at room temperature away from direct sunlight

18650 Li-Po cells are more durable than soft-pack Li-Po but still require proper care. If the battery swells or becomes hot, stop use immediately and recycle properly. Balance charging every cycle is the single most important factor for battery longevity.

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