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18350 2000mAh 11.1V 3S Li-ion battery for RC electric toy, front view showing cylindrical 110×18mm battery body, SM-2P discharge plug, and XH-4P balance charge plug on white background
18350 2000mAh 11.1V 3S Li-ion battery dimension drawing with measurements: length 110mm, diameter 18mm, 3 cells in series, for RC electric toy battery compartment fitment check

18350 2000mAh 11.1V 3S Li-ion Battery with SM-2P Discharge and XH-4P Balance Plug for RC Electric Toy

Original price was: $22.99.Current price is: $18.99.

🔘 18350 2000mAh 11.1V | 🔋 3S Li-ion | 🔌 SM-2P + XH-4P | 🚗 For RC Electric Toy

8 in stock

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SKU: 18350-2000mAh-11.1V-SM-2P Category: Tags: , , , ,
📦 Shipping, Warranty & After-Sales Information (Click to expand ▼)

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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)
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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

✅ 3S 11.1V 18350 Li-ion – Compact high-voltage power

✅ SM-2P + XH-4P – Discharge + balance charge plugs

✅ 2000mAh Capacity – Extended runtime

✅ CE / RoHS Certified

✅ 90-Day Warranty

✅ Ships in 3-7 days with tracking

🛡️ Shipping Protection Available at Checkout

✅ PayPal Buyer Protection included

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

Battery model: 18350 (3S Li-ion, 3 cells in series)
Capacity: 2000mAh
Rated voltage: 11.1V (3.7V per cell)
Charge limit voltage: 12.6V (4.2V per cell)
Battery type: Li-ion (18350 cells)
Cell configuration: 3S1P (3 cells in series)
Discharge plug: SM-2P (2-pin SM connector)
Balance charge plug: XH-4P (4-pin balance connector)
Dimensions: 110 × 18mm (3 cells stacked lengthwise)
Compatible with: RC electric toys, RC cars, RC drones, and other 3S Li-ion devices
Package include: 1 x battery
Power up your RC electric toy with this 18350 2000mAh 11.1V 3S Li-ion battery. This battery uses three high-quality 18350 cells (18mm × 35mm each) connected in series to deliver 11.1V power for high-performance RC devices. The slim 110×18mm cylindrical shape fits many compact battery compartments. Features a dual‑plug design: SM-2P for discharge and XH-4P for balance charging. Built with grade A cells and multi-layer safety protection against overcharge, over-discharge, and short circuits. CE and RoHS certified.
18350 Cell Advantage: 18350 cells are shorter than 18650 (35mm vs 65mm), making them ideal for compact 3S configurations. This 3S1P pack delivers 11.1V nominal (12.6V max) for RC devices requiring higher voltage for speed and power.
Dual Plug Design Note: This battery includes both a discharge plug (SM-2P) and a balance charge plug (XH-4P). The SM-2P connector powers your RC device. The XH-4P connector is for balance charging with a compatible 3S Li-ion/Li-Po charger — this ensures all three cells charge evenly for maximum lifespan.
Charging Instructions: Use only a balance charger designed for 3S (11.1V) Li-ion/Li-Po batteries. Set charger to Li-Po mode with 3S selected — full charge voltage is 12.6V. Recommended charge current: 2.0A (1C). Connect both the SM-2P and XH-4P plugs during charging. Never leave the battery unattended while charging. Do not discharge below 9.0V (3.0V per cell).
Battery Care Tips: Avoid over-discharge — stop using your RC toy when you notice reduced power. Always balance charge for maximum battery life. Allow the battery to cool before recharging. 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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Frequently Asked Questions

18350 and 18650 are both Li-ion cylindrical cells. The key difference is length:
- 18350: 18mm diameter × 35mm length (shorter)
- 18650: 18mm diameter × 65mm length (longer)

This battery uses three 18350 cells in series (3S), creating a compact 110×18mm pack perfect for devices with limited space. 18350 cells are ideal for compact RC toys where shorter battery length is required. For reference, similar 3S 18350 batteries on AliExpress sell for $10-16, and Amazon for $15-22. This battery is NOT compatible with 2S (7.4V) or 4S (14.8V) devices.

Use only a balance charger designed for 3S (11.1V) Li-ion/Li-Po batteries. Steps:
1. Set charger to Li-Po mode with 3S selected — full charge voltage is 12.6V
2. Recommended charge current: 2.0A (1C maximum)
3. Connect BOTH plugs to the charger:
- SM-2P (2-pin): Main discharge/power connector
- XH-4P (4-pin): Balance connector
4. Never charge without connecting the balance plug — this may cause cell imbalance
5. Never leave the battery unattended while charging
6. Do not discharge below 9.0V (3.0V per cell)

The XH-4P balance plug is essential for keeping all three cells at equal voltage, maximizing battery lifespan.

For maximum lifespan (300-500 cycles):
1. Always balance charge using both SM-2P and XH-4P plugs
2. Do not discharge below 9.0V (3.0V per cell)
3. Store at 3.8V per cell (11.4V total) at room temperature
4. Allow the battery to cool before recharging after use
5. Never leave the battery unattended while charging
6. Avoid physical damage to the battery wrap
7. If the battery swells, becomes hot, or shows damage, stop use immediately

This 3S 18350 pack delivers 2000mAh capacity — ideal for extended RC toy runtimes. Balance charging every cycle is the single most important factor for battery longevity.

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