7.4V 18650 Lithium Battery Pack with SM3P Connector, 3000mAh High Capacity Upgrade Battery for MN MN82 MN78 RC Crawler Car, Power Replacement for Bubble Machine & Other Toys DC4

Core Selling Points

• Standard 7.4V voltage with 18650 cells, 3000mAh large capacity greatly extends runtime, perfect replacement for stock low-capacity batteries
• Built-in professional BMS protection board with over-charge, over-discharge & short-circuit protection, explosion-proof & safe for toy use
• Pre-installed SM3P 3-pin plug, perfectly compatible with MN MN82 & MN78 RC cars, plug-and-play without modification
• High discharge rate delivers strong steady power output, sensitive throttle response and stronger off-road performance for RC vehicles
• Wide compatibility for RC cars, bubble machines and other 7.4V electric toys with matching plugs
• Neat compact size fits original battery compartment perfectly; matched dedicated USB charger enables easy daily charging

Product Description

• Large Capacity for Extended Playtime, Ideal Upgrade
• Constructed with premium 18650 lithium power cells at rated 7.4V, this 3000mAh battery offers far longer single-use runtime than original small-capacity batteries. No more frequent power cuts during outdoor activities. High-rate discharge design ensures consistent power output for climbing and high-speed racing, greatly improving your driving experience.
• Multi-layer Protection Circuit & Explosion-proof Structure
• Equipped with a dedicated battery management system (BMS) providing 4-fold protection: over-charge, over-discharge, short-circuit and over-current prevention. Effectively avoids risks like cell swelling and short-circuit fire. Thickened outer insulation wrapping enhances durability and explosion resistance, making it safe enough for kids’ daily toy use.
• OEM SM3P Plug, Seamless Fit for MN RC Models
• Factory-fitted SM3P 3-pin male connector matches the original port of MN MN82 and MN78 RC crawlers exactly. Direct plug-in replacement requires no wiring modification, keeping your vehicle intact. The buckle-style plug stays firmly connected even on bumpy off-road terrain for stable power supply.
• Versatile Compatibility for Multiple Devices
• Besides MN series RC off-road vehicles, this 7.4V 18650 battery works perfectly with bubble machines and other electric toys that use the same SM3P port. One battery serves multiple devices for outstanding cost performance.

Full Product Specifications

• Item Specification 
• Cell Type 18650 Lithium-ion Power Cell 
• Rated Voltage 7.4V 
• Capacity 3000mAh 
• Output Connector SM3P 3-pin Male Plug 
• Battery Dimension 66mm*36mm 
• Optional Accessory Dedicated 7.4V USB Charging Cable 
• Compatible Models MN MN82, MN78 RC Crawler Cars 
• Protection Features Over-charge / Over-discharge / Short-circuit / Over-current Protection 

Optional USB Charging Cable Introduction

• Custom USB charger exclusively for 7.4V lithium batteries: Input 5V (1-2A), Output 7.4V 800mA. Built-in smart indicator chip shows charging status and automatically cuts power once fully charged. Works with phone adapters and power banks for simple, convenient home charging.

User Guidelines & Safety Warnings

• Fully charge the battery before first use. Only use the matched dedicated 7.4V charger; never use incompatible chargers.
• Never short-circuit positive and negative terminals. Avoid heavy squeezing or piercing the battery outer cover with sharp objects.
• Recharge promptly once power noticeably drops. Deep over-discharge will cause permanent cell damage.
• Charge in open, well-ventilated areas far from flammable materials like fabric and paper. Unplug after charging completes.
• Stop use immediately and dispose properly if the battery swells, cracks or leaks. Do not reuse defective batteries.

After-sales Policy

• Damages caused by improper manual operation are not covered under warranty. Lithium batteries are classified as special shipping goods; please check local courier rules before placing orders.