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. A. Ideally, charge each battery on a separate charger unit. If this is not possible, charge batteries in series. We do not recommend charging batteries in parallel because it is not possible to control the amount of current passing through each battery. If batteries in different states-of-charge are being charged in series, each battery should be removed as soon as it is charged. (If you wait until the last battery is charged, some of the batteries will be overcharged).

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.D. Charge the battery for the number of hours shown in the table below depending on the open-circuit voltage. We receive data from battery manufacturers and this may be subject to change and / or manufacturing tolerances. 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!

These provide a very high initial current, and are used mainly to put some charge into a flat battery when it is needed urgently by the customer. The current falls as the battery state-of-charge increases, and the battery temperature is monitored to make sure it does not overheat.

Constant Potential Chargers

It also features a rollover proof lid for extra safety, making it ideal for cold weather climates and superior power & performance. B. These chargers should be able to charge over discharged (below 11.00V) batteries. Note that some have a special setting for all-calcium batteries. Constant Current Chargers It is good practice to wait for about 20 minutes for the gases to clear before removing the leads from the battery as some chargers remain ‘live’ and can cause a spark. If the alternator regulator is not set properly, or alternator voltage control circuit fails, then the battery can be subjected to an excessive charge. Different 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.