FAQs: Q. How to take care of the battery? A. In order to extend the service time, battery must be fully charged before use, storage and once every 3 months of storage thereafter. Q: Can you charge the battery while powering the heated apparel? A: NO, you can NOT charge the battery while you are using it to power on the heated vest or jacket. Q: How long will the battery last while in use? A: It depends on which areas do you heat and heat them together or separately. Usually, have all the buttons on, it can last 3-10 hours; Power on front abdomen position, it can last 9-20 hours; Power on back + lower waist position, it can last 7-14 hours; Power on front check position, it can last 9-20 hours. Q: What is the correct step to clean the heated jacket? A: Remove battery, hand wash or machine wash (in laundry bag) in cold water. Do not twist or wring. Q: How long will the battery be fully charged? A: From empty, the battery will take roughly 4-5 hours to be fully charged. Soft and Comfortable Material Adopts with an ultra-soft fleece lining to bring you more warmth and comfortable feeling in cold winter. Durable Zipper & Double Layer Pockets Zipper plays an very important role in making a jacket. After repeatedly testing more than 20 kinds of zippers in the market, we finally decide this one. We believe a high quality zipper can greatly improve customers` using experience. In addition, the double layer pockets can Isolate the battery and hand effectively. This is obviously a big improvement in design. Carbon Fiber Heating Method The heating material is made from carbon fiber, which is safer and softer than original heating method. The working life of the carbon fiber heater is 1000 hours, which could provide steady temperature from 40°C - 80°C (104℉ to 176℉) for this ARRIS heating vest. Upgraded All-area Independent Heating Design The carbon-fiber elements generate heat across mid-back, waist, chest, neck and abdomen. You can choose the heating parts as you want by the separate controllers. Easy Temperature Control Change the heat setting with a simple press on the 3-Button on vest. Each press will cycle through the apparel`s 5 temperature setting. It can keep your body warm from 3-12 hours. Machine Washable We`ve tested more than 50 consecutive wash cycles to ensure that the heating elements are not damaged by washing machine. Just make sure to use it when the jacket is completely dry. Better to scrub the USB interface each time after washing to clean impurities attached on it. 7.4V Heated Fleece Jacket for Women 7.4V Heated Jacket for Women 7.4V Heated Vest 7.4V Fleece Heated Vest 7.4V Heated Fleece Jacket for Men 7.4V Heated Jacket for Men Include Battery ✓ ✓ ✓ ✓ ✓ ✓ IMPORTANT! 1. NEVER leave charging batteries unattended. Keep watching on the charging process & react to any potential problems that may occur. 2. NEVER charge a swollen or ballooned battery (even if swollen upon purchase). 3. NEVER charge a battery if it has been dropped and sustained significant impact. 4. NEVER charge a battery if it has been punctured. 5. ALWAYS charge batteries in a fireproof container and away from combustible material. Do NOT charge on surfaces that can catch fire – this includes: wood, cloth, carpet, or in the application’s device. 6. ONLY use factory equipped chargers to charge the batteries. 7. Keep LIPO batteries out of reach of children or pets.