SHINTYOOL 21v Lithium Battery - 4.0 Ah Battery with Charger Adapter Led Indicator Compatible with Leaf Blower

Specifications:Type: Battery Rated Voltage: 21VPower Input: 400WCharger Input:110V, 50Hz 60HzNumber of Batteries:1Cells Per Batter: 10Battery Weight : 20 OZSpecification:Type: Battery power adapterMaterial: ABSPlug type: USInput voltage: 110 240V 50HZ/60HZInterface: about 5. 5*2. 5mm/0. 2*0. 1inOutput current: 1AWeight: 9 OZ Note：1. Do not try to open the battery. 2. Protect the battery against continuous intense sunlight, fire, water, and moisture. 3. Do not damage the battery with sharp objects. 4. Do not discard this product at will. 5. Overcharging the device will reduce the life of the battery, unplug it from the charger in time to avoid overcharging. 6. If the battery does not last 10 minutes, it may be caused by overheating. Please wait for 5 minutes for the battery to cool down. Battery Maintenance:Please read the following notes on battery maintenance carefullyAfter receiving the product, please fully charge the battery before using it. In order to protect the battery, please do not charge the battery for a long time. The best time to charge is not more than 6 hours. Please do not charge the battery all night, it will seriously damage the battery life. Always remove battery pack from your tool when you are assembling parts,making adjustments,cleaning,or when not being used for an extended time. Do not leave the battery dormant for long periods of time. We recommend using the battery at least once every two to three weeks. How to install batteryStep 1: Hold the machine firmly with one hand. Push down the battery unlock button located on the rear side of the battery with the other hand. Step 2: Keep pushing the unlock button down and slide the battery backward out of the machine. Step 3: You.