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.

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. Yuasa Silver car batteries allow around 50,000 engine starts, compared to around 20,000 on a normal battery.Terminal Layout: Negative (-) on left, Positive (+) on right ; with the terminals on the edge of the battery closest to you If you are collecting instore from our Swindon branch we can dispose of the old battery free of charge. 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.

Yuasa are one of the world's largest manufacturers and suppliers of valve regulated lead-acid batteries with global manufacturing plants and an extensive marketing and distribution network throughout the UK and Europe. They provide dependable starting power, exceptional corrosion resistance and the performance to handle the demands of today’s modern vehicles.As above, every time a battery is charge and discharge cycled a small amount of material is lost. If a battery is subjected to deep discharging (greater than 35%) and rapid charging the process is accelerated. Additionally if the recharge does not recover the discharge cycle in full, the battery will exhibit loss of performance and concentration of the acid can occur between plates which can lead to corrosion and loss of performance. There are many different types of hand held digital conductance tester on the market. They generally give a good indication
of problems but the following points should always be taken
into account.

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 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. 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. 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”. Excessive use of electrical consumers, – air conditioning, stereo (incorrectly fitted direct to the battery) etc