A：If the D5-2500 is used in the process of warning prompt and Didi alarm sound, the several reasons shall be excluded, such as buzzer alarm and flashing triangle symbol for high temperature protection, low temperature protection, over discharge protection, over charge protection, overload protection, short circuit protection and over current protection, and the D5-2500 can be restored to normal work after being excluded in several aspects. If an alarm occurs during the use of the D5-2500 and the alarm icon does not disappear after restarting the device, please stop using the product immedi- ately (do not charge or discharge the device). If the information above cannot solve your problem, please contact customer service for consultation.