Key specification for this hand warmer: capacity 4000 mAh-6000 mAh, material ABS, Aluminum / Aluminum Alloy, PC. Everything below is reproduced from the factory data sheet. Made by Hong Kong Lewei Electronics Technology Co., Limited (1 year on the platform, typical reply ≤1h). Send your target quantity and destination for a firm quotation with current lead times.
Key Features of This Hand Warmer
- Model Number: JF310
- Output Power: 7.5 W
- Capacity: 4000 mAh-6000 mAh
- Material: ABS, Aluminum / Aluminum Alloy, PC
- Place Of Origin: Guangdong, China
- Feature: Hand Warmer, Rechargeable, Magnetic, Led Display
Technical Specifications
| Capacity | 4000 mAh-6000 mAh |
|---|---|
| Output Power | 7.5 W |
| Output Interface | Type-C, USB |
| Feature | Hand Warmer, Rechargeable, Magnetic, Led Display |
| Input Interface | AC |
| Battery Type | 18650 Lithium Battery |
| Material | ABS, Aluminum / Aluminum Alloy, PC |
| Weight | 0.236 |
| Place Of Origin | Guangdong, China |
| Model Number | JF310 |
| Heating Method: | Aluminum sheet heat dissipation |
| Battery Life: | 3-6 hours (inclusive) |
| Product Dimensions | 97*29*36.5mm |
| Package Dimensions | 113*38*140mm |
| Carton Dimensions | 365*336*280MM |
| Carton Volume | 0.034 ㎡ |
| Net Weight (2 Pcs) | 236g |
| Gross Weight (2 Pcs) | 16.2kg |
| Product Colors | White, Pink, Green, Black, Yellow |
| Packing List | Exquisite color box, charging cable, user manual, blister lanyard |
| Selling Units | Single item |
| Single Package Size | 16.3X8.8X19 cm |
| Single Gross Weight | 0.317 kg |
Product Details
Type-C Input: | 5V/2A | Rated Power: | 7W | ||
Single Rated Capacity: | 3000mAh | Plug Interface: | TYPE-C | ||
Heating Temperature: | 45/50/55/60°C | Charging Time: | Approx. 3-3.5h | ||
Implemented Standard: | GB/7406.1-2005, GB/T35590-2017 | Certificate Type: | FCC, ROHS, PSE, CE, Quality Inspection Report | ||
Certificate Type: | FCC, ROHS, PSE, CE, Quality Inspection Report | Working Hours: | 45°C: approx. 5 hours 50°C: approx. 4 hours 55°C: approx. 3 hours 60°C: approx. 2.2 hours | ||
We ship neutral products by default. Custom LOGO and OEM branding are available. | |||||






















Q1: Are you a manufacturer or a trading company? | ||||||||
We are a manufacturer based in China, founded in April 2014. We have over 500 employees, including 25 R&D engineers. Our facility covers 4,000 square meters, equipped with 6 professional production lines and advanced technology to ensure high product quality. | ||||||||
Q2: Can I get a sample order? | ||||||||
Yes, we support sample orders so you can test the product in advance. | ||||||||
Q3: What customization services do you offer? | ||||||||
We offer customization for logo, color, label, packaging box, and manual. For orders above 500 pcs, OEM logo and label are available. For orders above 1000 pcs, OEM packaging box and manual are available. For orders above 3000 pcs, OEM color is available. We also provide SDK and API for app development at an additional cost. | ||||||||
Q4: What is your lead time? | ||||||||
Sample order: 1–3 working days after payment confirmation. Order below 1000 pcs: 7–10 working days after payment confirmation. Order above 1000 pcs: 15–20 working days after payment confirmation. | ||||||||
Q5: What shipping methods do you support? | ||||||||
We support express delivery (DHL, UPS, FedEx, TNT, EMS, or as requested by customers), air freight, sea freight, or direct shipment to your agent. | ||||||||
Q6: How long does shipping take? | ||||||||
For items in stock, shipments will be dispatched within 3–5 working days after payment confirmation (depending on quantity). By express (door-to-door): 3–9 days. By air to your nearest airport: 5–10 days. By sea to your nearest seaport: 20–40 days. | ||||||||
Q7: What is your warranty period? | ||||||||
We offer a one-year warranty. If the product is damaged due to non-human factors, please contact our sales manager, and we will provide the best solution. | ||||||||
Q8: How do you ensure quality control? | ||||||||
Our factory holds RoHS, CE, and FCC certificates. Every product is tested one by one before shipment to guarantee 100% functionality. | ||||||||
Ordering and Pricing
- Minimum order quantity: 2 piece
- Volume pricing:
- 2–99 piece: US $11.29 / piece
- 100–499 piece: US $11.01 / piece
- 500–999 piece: US $10.73 / piece
- 1000+ piece: US $10.45 / piece
- Ships from: HK
- Customization: OEM and ODM accepted on qualifying volumes.
Frequently Asked Questions
What is the minimum order quantity for this hand warmer?
The standard minimum order quantity is 2 piece. Trial orders can usually be arranged for buyers evaluating the product before a full production run.
Do you accept OEM or custom branding?
Yes. Custom logo, colour, packaging and specification changes are accepted on qualifying order volumes. Send your artwork and technical requirements with your enquiry.
How long does production and delivery take?
In-stock configurations typically ship within 7–15 days. Customised or large-volume orders are usually produced in 25–35 days, confirmed on order.
About the Manufacturer
This product is produced by Hong Kong Lewei Electronics Technology Co., Limited. The company 1 years as a verified Alibaba.com supplier, Trading Company. Browse the full Hong Kong Lewei Electronics Technology Co., Limited range on HVACR Nexus.
See more in Foot and Hand Warmers on HVACR Nexus.


















