1、電動車蓄電池長久使用會導致電池失水。電動車在使用了8-10個月以后或充電時電源箱發燙時最好到專業保養點進行深度維護。

2、當蓄電池老化，容量下降時，續行里程會變短，但以下不屬于蓄電池的問題時也會導致續行里程變短：
A、當電機效率下降時，所做的無用功增大，浪費電量，使續行里程變短；
B、劣質充電器每天對蓄電池充電時欠充電，使蓄電池容量不足而造成續行里程逐日下降變短；
C、控制器不良使電動車啟動電量過大，啟動時間過長而浪費電量，致使電動車續行里程變短；
D、劣質電動車各運動部位摩擦系數過大，或者機械傳動助力過大，也能造成浪費電量，導致續行里程變短。
3、電動車的續行里程在短時間內突然下降十幾公里，很有可能是電池組中最少有一塊電池出現斷格、極板軟化、極板活性物質脫落等現象。此時，應及時到專業電池修復機構進行檢查、修復或配組。電動車電池其中一個或幾個電池出現故障后，要整組更換，不得單獨調換其中那只存在故障的電池，否則對新電池會造成極大的傷害。

1, long-term use of electric vehicle batteries will lead to battery water loss. Electric car in the use of 8-10 months or when charging the power box when the best hot to the professional maintenance point for the depth of maintenance.

2, when the battery aging, capacity decline, the continued mileage will become shorter, but the following does not belong to the battery when the problem will lead to continued mileage shorter:

A, when the motor efficiency is reduced, the useless work increased, wasting electricity, so that the continued mileage shorter;

B, poor quality charger charging the battery every day when the charge, so that the battery capacity is insufficient to cause the daily mileage of the daily decline shorter;

C, the controller does not make the electric car start power is too large, start time is too long and waste of electricity, resulting in electric car continued mileage shorter;

D, low-quality electric car parts of the friction coefficient is too large, or mechanical transmission power is too large, can also cause waste of electricity, resulting in shorter mileage.

3, electric car continued mileage in a short time suddenly dropped more than ten kilometers, it is likely that the battery pack at least one battery dislocation, plate softening, plate active material off and so on. At this point, should be promptly to the professional battery repair institutions to check, repair or with groups. Electric car battery One or several of the battery failure, the entire group to replace, not a separate exchange of which there is only the fault of the battery, otherwise the new battery will cause great harm.