The batteries recommended within this Yuasa application list are equal to or above the original equipment specification. Fitting a smaller or less powerful battery will result in a shorter service life and earlier failure. The failure will normally be seen as deep cycling/premature wear and tear.

CCA readings can be measured according to a number of international standard SAE, EN, DIN or IEC, Within the EN 50342: 2006 standard two requirements are listed: EN1 & EN2. Typical Conductance testers are calibrated toward EN2 standard, however the ETN numbering system makes it difficult for the normal man to understand which standard is being used on the battery. This Yuasa YBX3027 12v 62Ah SMF Battery features specialist internal components, unique design features and cutting edge technologies to combat the causes of battery failure and deliver reliability, long life and superior performance. The sulphation hinders the efficiency of the electrochemical reactions within the battery between the active material of the plates and the acid. This is not a manufacturing fault. It should be noted that a vehicle fitted originally by manufacturer with an AGM battery should be replaced only with an AGM battery. Likewise, a vehicle originally fitted with an EFB battery should only be replaced by and EFB or AGM battery. Nevertheless, it should be clearly understood that wet (filled) lead acid battery is “a live” product. Whether it is in storage or in service, it has a finite life. All batteries once filled will slowly self discharge. The higher the storage temperature and humidity of the storage area, the greater the rate of self discharge.Typically seen in a battery within 12 months service life. One cell will show a dramatically lower acid specific gravity reading than the others. The problem cell will usually boil visibly under a high discharge, all other remaining cells will show a good specific gravity reading of 1.26 or above. Short Circuit/dead cells seen in later life are usually associated with the recovery of a sulphated/overdischarged battery. It is possible to see variable acid specific gravities between cells if sulphation is the route cause. If you are collecting instore from our Swindon branch we can dispose of the old battery free of charge.

If the battery is stored, handled or fitted incorrectly, if the connectors leads are hammered onto terminals, leads are not correctly fastened, the battery will have damage to casing and/or terminals. This is not a manufacturing fault. Electrical fault e.g. interior boot/glove box lighting, ECU/sensor interface issues where vehicle does not go into “Sleep” after parking for more than 5 minutes, wiper
motor faultDifferent battery manufacturing design techniques can significantly effect the reading on one digital conductance tester as common algorithms have to be used. For example, batteries designed with more durability in mind tend to carry more material and higher density, this is usually reflected in a lower initial voltage, but longer discharge times. Digital testers can only determine realistically the initial internal resistance of the battery at the particular state of battery, not how much material is available. This can cause considerable difference between the indicated CCA data and the real CCA data obtained in a laboratory under real current loads to the appropriate battery standard specified. Excessive use of electrical consumers, – air conditioning, stereo (incorrectly fitted direct to the battery) etc Terminal Layout: Negative (-) on left, Positive (+) on right ; with the terminals on the edge of the battery closest to you Undercharging occurs if the battery is not receiving enough charge to return it to a full state of charge, this will slowly cause sulphation. This fault can occur if the car is being used only occasionally for short journeys, or for Start-Stop urban motoring. Undercharging will occur if alternator voltage is low (13.6-13.8volts), the alternator belt is loose or battery cables are worn and causing high resistance – If in doubt seek advice from an auto electrician. Battery Problems Manufacturing Faults Yuasa Silver car batteries allow around 50,000 engine starts, compared to around 20,000 on a normal battery.

The condition of battery cables and terminal connections can influence the reading on the hand held tester. If a battery is allowed to stand in a discharged state either on or off a vehicle for a period of time, a chemical reaction takes place which will permanently impair the performance and life of the battery, this process is called “sulphation”. Considerable investment in European manufacturing facilities, the establishment of a European network of 6 wholly owned companies, and the constant search by Yuasa to provide even more reliable power from smaller batteries, has resulted in the company's current position and proud claim to be No.1 in Europe!Can't find what you're looking for? In most cases we are able to trace your vehicle by accessing an online database. From here we can tell the make, model, engine size and equipment level of your car, mpv, 4x4 or van and match up the correct battery.