4 PCS 3.7V 1000mah Li-Ion Battery, 3.7 Volt Rechargeable Battery with 4 USB Charging Cable SM-2P Plug, 3.7V RC Battery, Universal Li-ion Battery for RC Vehicles, Boats, Tanks, Cars, Robots

• 🔋Set Specifications: Each set includes 4 purple 3.7v 1000mah li-ion battery units + 4 independent usb chargers. Every 3.7v 1000mah li-ion battery is equipped with an sm-2p plug and red-black power cables, allowing you to cycle-charge multiple devices right out of the box—saving the cost and hassle of buying extra accessories
• 🔋Safe & Durable:Each 3.7V 1000mah li-ion battery has a built-in overcharge/overcurrent protection chip and works with a smart usb charger that automatically cuts off when fully charged. Using eco-friendly lithium-ion cells free of mercury/cadmium, these batteries can be recharged over 500 times for long-lasting, stable power delivery.
• 🔋Convenient USB Charging: Charger features a universal usb port and can be connected to a power bank, computer, or wall adapter. A red led indicates the charging status in real time (steady on while charging, off when fully charged), making it easy to monitor progress at any time
• 🔋High Discharge Performance: 3.7v 1000mah li-ion battery supports a 10c discharge rate, delivering strong and continuous power that effectively extends the run time of your rc car per charge. Weighing only 21g per piece, it’s lightweight enough not to affect vehicle balance, ensuring both performance and handling
• 🔋Wide Compatibility: Designed for popular rc car models such as deerc e35/de38/de40/de50/de55, bezgar tm201, top rc tb202, and more (compatible with 3.7v devices with sm-2p interface). Simply plug and play with this ready-to-use 3.7v 1000mah li-ion battery​set

Features -Utilizes high-quality li-ion cells to ensure a full 1000mah capacity. Each 3.7v 1000mah li-ion battery weighs just 21g, measures 14.2×50mm, and delivers stable, reliable performance -Built-in overcharge/overcurrent protection circuit paired with a smart charger; charging status is indicated by LED (red during charging, green when full) for added peace of mind -Comes with an independent USB charging cable compatible with common power sources. Fully charges in 2–3 hours—plug and play, charge and enjoy -Specifically designed for 3.7V devices with SM-2P interface. Suitable for most RC cars, drones, toy models, and small electronics. Swap in a 3.7V 1000mah Li-Ion Batteryand enjoy extended runtime instantly -Cells contain no heavy metals, support 500+ recharge cycles, and are lightweight and portable—an economical and eco-friendly charging solution Package Contents 4 × 3.7V 1000mah Li-Ion Battery 4 × USB charging cable 1 × User manual Important Notes 1.Please confirm that your device’s voltage and interface (3.7V + SM-2P) are compatible before using this 3.7V 1000mah Li-Ion Battery 2.When charging, use a standard USB power source of 5V/1A or higher 3.Store batteries in a dry, cool place; avoid high temperatures or humid environments 4.If not used for an extended period, recharge 3.7V 1000mah Li-Ion Battery every 3 months to maintain its performance