Hello, if be not plan cost, it is possible that short time lash-up is used. But applying for long cannot be taken. The car starts the attaint with can premature batteries, the loss outweights the gain. 
Because the batteries of car application is,start model batteries, the characteristic is OK discharge of short time 3-5c, the biggest electric current 500 install above. But capacity of batteries of discharge of big electric current drops particularly fast, often see some car is bad to start so, start batteries a few times to do not have report! This is to start model the characteristic of batteries, the drawing cell that the rate when discharge and electric motor-car use is different. Start model the rate when batteries discharges is commonly 10 hours or 20 hours. For example the batteries of 60ah sheds discharge to cut-off voltage with 6 installed phone, can discharge continuously 10 hours, if electric current increases one times, 12 put report, so discharge needs 4 hours only to cut-off voltage, batteries capacity shrink arrives 48ah, if discharge electric current is increased further, total capacity still can shorten. So of same size start model batteries, use on same electric motor-car, because discharge electric current is big and bring about a capacity to narrow. Course of development of actual add boat can shorten, start normally model batteries n can receive compensatory report under 20 ％ , when charging much, discharge time is little. And put on electric car to use, persistent discharge can damage prematurely. 
Because start model the requirement that batteries discharges to satisfy instantaneous big electric current, go up in the design and drawing batteries is different, start model batteries interior leading piece number is much and thin, internal resistance is low. And discharge for long only do not charge to cause leading very easily later premature vulcanization, the capacity is reduced cannot use finally. Drawing batteries criterion as it happens and the batteries that start is contrary, in-house leading piece number is little, thicker, positive electrode uses structure tubal form, positive electrode board is strung together with tube bank of silk ribbon black silk ribbon in muscle above, plumbic white is joined inside the canal, and what negative plate uses is common besmear creams type leading. Because active material is in those who be inside the canal, won't fall off, life will be very long, but it is as a result of active other people inside the canal, utilization rate creams than besmear type leading is low. And active material and electrolyte contact an area little, performance of discharge of big electric current is so bad, short-circuit current is smaller also. But this kind of character is to suit small electric current to discharge for long particularly, although pass discharge,affect to life not big also. Suit particularly long in small electric current generates electricity, so majority is used in electric car above (include freight car, project machine) . 
Start model batteries is used on electric car to because discharge continuously,be met cannot get seasonable complement report and plate is premature vulcanization, the capacity also can narrow, and with batteries of capacity report motor-car comparative course of development shortens 20 ％ above, and move the special account ~ of the car because of report often pass discharge! And start model because batteries passes discharge aggravate batteries ageing speed, the attaint with so premature meeting!
