How to Check your vehicle battery if it is good condition ?
 
1. check the connector has connected the battery terminal well ?if not connected in good , when starting high current to start the car,the current will damage the terminal .again and again ,the terminal will be break by someday.
2. Check if the battery outside box has broken ? if it has broken ,you must change new one battery replace it  at once .
3. If the car battery is good box ,no any broken ,you can  continue to check the electronic holes color on the battery top side .For MF car battery ,it has electronic holes design .Normally ,the hole color is green ,it shows the battery capacity is enough ,the battery in good condition.If the hole color be black ,it means the battery lack of charged ,has not enough power ,must take it out and use battery charger to charge it with enough time . if the hole color is light yellow or has no color ,it means the battery inside lead acid  too low than the required  or it means the battery has some problem ,need change it .