Model: 582728 capacity: 400 mah rated voltage: 3.7 v charging voltage: 4.2 v volume: 5*27*28mm battery type: polymer lithium battery compatible models: wikys-q528-twox-q90-q50-q19-q12 tested before our products are shipped made. no returns after the battery is soldered. please do not open a return request for soldered and used products. a maximum of 2 orders can be placed from this product. swordslife reserves the right to cancel orders over 2 units. more than 50 stocks are available to be sold at the campaign price. the seller determines the selling price of the product you have reviewed. a product can be sold by more than one seller. sellers of products offered for sale by more than one seller are listed according to the price they set for the product, seller ratings, delivery status, promotions on the products, whether the cargo is free or not, whether the products can be delivered with fast delivery, and the stock and categories of the products. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.