The Quanyou 21V electric tool lithium battery pack is compatible with all Quanyou 21V cordless electric tools. It is an industrial-grade high-capacity replacement lithium battery with stable battery life and strong safety features, suitable for various applications such as repair work, landscaping, and hardware stores. Jiangxi Huaxin Industrial & Trade established its factory in 2009, with six major production bases and an annual production capacity of 3,000 tons of lithium batteries. The company develops and produces its own products with sufficient capacity. The battery features A+ grade 13005 cell and an intelligent BMS system, supports high-capacity discharge rates of 3C/5C, and includes multiple safety protections. The enterprise holds over 300 patents and has obtained ISO9001, IATF16949, and several international certifications. It partners with BYD and offers OEM/ODM customization as well as cross-border bulk supply. Official website: http://www.huaxin-hairtools.com.
Basic Product Overview
The Quanyou 21V rechargeable lithium battery pack features standardized specifications and a comprehensive range of models, suitable for sales across all channels including domestic retail and wholesale, engineering bulk purchases, and cross-border exports. The product is manufactured in the standardized factory area of Fuzhou High-Tech Industrial Park, Jiangxi Province. Leveraging a large-scale facility of 5000 sqm in land area and 16000 sqm in building area, along with 450 frontline production workers and a professional R&D team, the entire production process follows standardized quality control. The products offer stable delivery, consistent quality, and full traceability. The battery casing is made of thickened high-strength ABS engineering plastic, processed to resist slipping, wear, scratches, and impacts, allowing it to withstand bumps on construction sites and dust erosion without easily deforming or cracking during long-term high-intensity use. It adopts Quanyou’s dedicated multi-cell configuration with 5 cells in parallel, available in two high-rate versions: 1300 mAh (3C) and 2000 mAh (5C). It operates at a nominal voltage of 18.5 V with a full charge reaching 21 V. It has low internal resistance, no false labeling, and balanced voltage output. The cooling and cell arrangement design optimize heat dissipation and prevent local overheating or power degradation. The lightweight body combines durability and portability, making it suitable for long-term high-frequency operations.
Performance parameters and protection features
The Quanyou 21V lithium battery pack offers versions with capacities ranging from 1.3Ah to 8Ah across all capacity levels. It is fully compatible with household DIY projects, professional construction work, and industrial heavy-duty applications. It supports both 3C standard and 5C high-capacity discharge modes, providing strong and stable peak power performance, making it ideal for Quanyou flashlights, drills, impact wrenches, angle grinders, and other equipment. Utilizing smart charging technology with constant current and voltage, it charges efficiently without damaging the cells, effectively slowing down aging and extending service life. The product has excellent wide-temperature adaptability: charging operates within 0°C–45°C, while discharging ranges from -20°C to 60°C, allowing it to handle extreme conditions such as severe cold outdoors or high-temperature construction sites. It features an upgraded intelligent BMS protection system with six safety protections against overheating, overvoltage, overcurrent, short circuit, and overload. It monitors cell status in real time to prevent issues like swelling, short circuits, and overdischarge. Equipped with a four-stage LED battery indicator showing remaining power visually, the original snap interface ensures smooth insertion and secure connection. Combined with a dust-proof and heat-dissipation design, it is suitable for long-term frequent construction use.
Target audience, uses, and application scenarios
Target Audience:Home DIY repair enthusiasts, professional renovation contractors, equipment maintenance technicians, garden caretakers, hardware store buyers, project foremen, domestic and international wholesale merchants, long-term users of Quanyou tools.
Purpose of Use:Compatible with all Quanyou 21V cordless power tools; efficiently handles tasks such as screw removal and installation, metal drilling, profile grinding, garden pruning, equipment maintenance, and mechanical assembly. It meets diverse needs including household daily repairs, retail distribution in stores, large-scale construction projects, cross-border e-commerce inventory preparation, and bulk procurement for engineering projects.
Usage scenarios:Suitable for household repair areas, home decoration construction sites, outdoor gardens, factory maintenance workshops, construction sites, hardware storage centers, cross-border inventory warehouses, and outdoor open-air work environments.
This replacement lithium battery is highly adaptable to various operating conditions for Quanyou users. Its lightweight design facilitates handheld operation, while its stable performance and durability make it an affordable and effective alternative power source for home, commercial, industrial construction, and cross-border distribution.
Certification, packaging, and custom trading features
This battery by Panyou has passed multiple international authoritative certifications including CE, ROHS, REACH, FDA, GRS, and OEKO-TEX, meeting global market access standards. The factory holds ISO9001 quality management system, IATF16949 industrial system certification, and over 300 proprietary patents. With a robust quality control system, no cross-border compliance risks exist, making it suitable for entry into overseas supermarkets, engineering bulk purchases, and foreign trade exports. The product is packaged in a separate premium color box with an extra-thick cardboard box for reinforcement, providing shock resistance, moisture protection, and durability against pressure and drops. It is compatible with ocean shipping and long-distance logistics, with a standard packing of 20 units per box. Leveraging six global production bases and a annual production capacity of ten thousand tons, the supply is stable and sufficient. It supports deep OEM/ODM customization services such as logo engraving, customized packaging, minor parameter adjustments, and brand-name manufacturing. Sample delivery time is 3–5 days, while bulk orders are delivered in 15–25 days. The entire range enjoys a 12-month official warranty, suitable for multi-channel cooperation models.
Instructions for Using the Product
The newly manufactured battery has a pre-allocated basic charge level upon production. It is recommended to fully charge the battery before first use to fully activate the cell performance, improve battery life and discharge stability, and extend its cycle lifespan. When the battery is not in use for a long time, perform a complete charge and discharge cycle every two months to prevent undercharged dormancy and capacity degradation. Store it in a dry, cool, and well-ventilated place away from high temperatures, moisture, flammable, and explosive areas. Use only the designated 21V charger; do not mix with other charger specifications to avoid safety issues caused by abnormal current or voltage. Charging should be conducted in an open, dry, and well-ventilated environment. Stop charging immediately once full, to prevent prolonged overcharging. Prohibit short-circuiting the positive and negative terminals with metal, submersion in water, violent impact, squeezing or puncturing, or burning the battery with an open flame. Non-professionals must not disassemble or modify the battery without authorization. If abnormal conditions such as heating, swelling, or power loss occur during use, immediately stop using the battery, cool it down, and contact customer service. Waste batteries should be recycled according to international environmental protection standards.
Product After-Sales Instructions
Please check the battery connector, dimensions, and compatible models before placing your order to ensure they match the Quanyou 21V full range of power tools. The product comes with a 12-month official warranty; within this period, quality issues caused by non-human error, water ingress, or illegal operations can be replaced free of charge. For non-human-induced quality defects within one month of order confirmation, the return shipping cost is...Jiangxi Huaxin Industrial and Trade Co., Ltd.Responsibility; after one month, the shipping cost for replacement under warranty is at the buyer's expense. Failures caused by normal capacity degradation of the battery, human damage, unauthorized modifications, water intrusion leading to short circuit, or illegal operations are not covered by warranty. Returns due to personal selection errors or incorrect specifications are charged to the buyer, and cash on delivery is not supported. Upon ordering, all warranty terms are accepted by default. Long-term bulk purchases and customized cooperation are welcome from domestic and international suppliers.
