Specifications High-concerned chemical:None Nominal Capacity:>3500mAh Weight:220g Voltage:14.4v Size:18650 Application:Electric Sweeper,G1 MJSTG1 Model Number:Mi Robot Vacuum-Mop Essential Type:Li-Ion Brand Name:Aleaivy Origin:Mainland China Rated Voltage:14.8 V Certificate: This product is ensured that it is purchased from the standard manufacturers accessories sales channels , absolutely 100% . Brand:yelping Product attributes: 100% Battery Model: H18650CH-4S1P Battery capacity: 2600mAh Voltage limit: 16.8V Compatible with: for Xiaomi Mijia Mi Sweeping Mopping Robot Vacuum Cleaner G1 Battery Country of Origin: China Packing specification: bulk package (bubble envelope bag) Important:New Lithium Ion batteries must be FULLY CHARGED and FULLY DISCHARGED 2 to 3 times, before being FULLY CONDITIONED. Please remember that a new Lithium-Ion battery's full performance and longevity is only achieved after 2 to 3 complete charge and discharge cycles. After you go through 2 to 3 cycles, you'll never have to condition your battery again! All talk and standby times are approximate, depending upon carrier's network settings, signal strength, and features selected. Talk and Standby times will be lower in Analog mode as noted above. Dear customers and friend: when you buy my item. if anything unusual happens:Not received the items,or inconsistent with the description,or other reasons make you not satisfied. Please do not leave neutral(or negative)feedback or open case easily,please feel free to write to contact me. We will do our best service to solve you problem. I believe that good communication can resolve everything. Again thank you so much. We accept Alipay, West Union, TT. All major credit cards are accepted through secure payment processor ESCROW. We will ship your items as soon as possible after you made payment. If your items ran out of stock or any other problems. We will tell you as soon as possible. Normally, we ship it by Hong Kong Airmail, Singapore Airmail. The International Shipping requires more complicated shipping procedures. If item not arrive after expectation day or any other question. Please don't hesitate to contact us. We will do our best to resolve the problem Question: When to contact customer service reply more timely? Answer: Monday to Saturday in the United States time from 17:00 to 4:00 the next day Customer Service is online to provide best service to you! (AliExpress shows the US time, Beijing time is as early as 16 hours than Los Angeles time of United States)