It is recommended to buy the original factory, although the price is a little expensive, but very cost-effective because of their batteries and your phone voltage. The current output is consistent, on the contrary, compared with the battery is not very safe, and the quality is not very durable, the original battery can be charged and discharged hundreds of times, maintain normal, and now the original battery is not very expensive, in the event day login Huawei official website to make an appointment, to replace 99 or 129, cost-effective