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18650 2000mAh 7.4V 2S Li-ion battery for Jinming Stadie water toys, front view showing cylindrical 132×18mm battery body, SM-2P discharge plug, and XH-3P balance charge plug on white background
18650 2000mAh 7.4V 2S Li-ion battery plug closeup showing SM-2P 2-pin discharge connector and XH-3P balance charge connector for Jinming Stadie water toys RC boat

18650 2000mAh 7.4V 2S Li-ion Battery with SM-2P Discharge and XH-3P Balance Plug for Jinming Stadie Water Toys

Original price was: $19.99.Current price is: $15.99.

🔘 18650 2000mAh 7.4V | 🔋 2S Li-ion | 🔌 SM-2P + XH-3P | 💧 For Jinming Stadie Water Toys

8 in stock

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SKU: 18650-2000mAh-7.4V-SM-2P Category: Tags: , , , ,
📦 Shipping, Warranty & After-Sales Information (Click to expand ▼)

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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

✅ 2S 7.4V 18650 Li-ion – Long-lasting power

✅ SM-2P + XH-3P – 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: 18650 (2S Li-ion, 2 cells in series)
Capacity: 2000mAh
Rated voltage: 7.4V (3.7V per cell)
Charge limit voltage: 8.4V (4.2V per cell)
Battery type: Li-ion (18650 cells)
Cell configuration: 2S1P (2 cells in series)
Discharge plug: SM-2P (2-pin SM connector)
Balance charge plug: XH-3P (3-pin balance connector)
Dimensions: 132 × 18mm (2 cells stacked lengthwise)
Cable length (including plugs): approx. 45mm
Compatible with: Jinming Stadie water toys, RC boats, and other 2S Li-ion devices
Package include: 1 x battery
Power up your Jinming Stadie water toy with this 18650 2000mAh 7.4V 2S Li-ion battery. This battery uses two high-quality 18650 cells (18mm × 65mm each) connected in series to deliver 7.4V power for extended runtime. The slim 132×18mm cylindrical shape fits many compact water toy battery compartments. Features a dual‑plug design: SM-2P for discharge and XH-3P for balance charging. Built with grade A cells and multi-layer safety protection against overcharge, over-discharge, and short circuits. CE and RoHS certified.
Dual Plug Design Note: This battery includes both a discharge plug (SM-2P) and a balance charge plug (XH-3P). The SM-2P connector powers your water toy. The XH-3P connector is for balance charging with a compatible 2S Li-ion/Li-Po charger — this ensures both cells charge evenly for maximum lifespan.
Charging Instructions: Use only a balance 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: 2.0A (1C). Connect both the SM-2P and XH-3P plugs during charging. Never leave the battery unattended while charging. Do not discharge below 6.0V (3.0V per cell).
Battery Care Tips: Avoid over-discharge — stop using your water toy when you notice reduced speed. 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

This 18650 2S Li-ion battery is compatible with Jinming Stadie water toys, RC boats, and similar watercraft that fit a 132×18mm battery compartment. It features an SM-2P discharge plug and XH-3P balance charge plug. The slim cylindrical design is ideal for compact water toy battery compartments. Please verify your device uses SM-2P/SM-2P compatible connector and has enough space for the 132mm length before ordering. This is a 2S 7.4V battery — NOT for 1S (3.7V) or 3S (11.1V) devices. For reference, similar 2S 18650 batteries on AliExpress sell for $6-10, and Amazon for $10-16.

Use only a balance charger designed for 2S (7.4V) Li-ion/Li-Po batteries. Steps:
1. Set charger to Li-Po mode with 2S selected — full charge voltage is 8.4V
2. Recommended charge current: 2.0A (1C maximum)
3. Connect BOTH plugs to the charger:
- SM-2P (2-pin): Main discharge/power connector
- XH-3P (3-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 6.0V (3.0V per cell)

The XH-3P balance plug is essential for keeping both cells at equal voltage, maximizing battery lifespan. For reference, charge current options: 1.0A for longer lifespan, 2.0A for faster charging.

For maximum lifespan (300-500 cycles):
1. Always balance charge using both SM-2P and XH-3P plugs
2. Do not discharge below 6.0V (3.0V per cell) — stop using your water toy when power drops
3. Store at 3.8V per cell (7.6V 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 2S 18650 pack delivers 2000mAh capacity — ideal for extended water toy runtimes. Balance charging every cycle is the single most important factor for battery longevity.

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