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). 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 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. 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! B. Stop charging when the battery is gassing freely and the battery-voltage shows no increase over a period of at least 2 hours.

C. Only use a boost-charger that limits the charging voltage to a maximum of 14.2 Volts and that has a temperature monitor. When fitting the charger to the battery, connect the positive lead to the positive terminal and the negative lead to the negative terminal. These maintain a fixed, constant, pre-set voltage throughout the charging period. The current cannot be set and will fall as the battery state-of-charge increases. Yuasa 12v 60Ah 550A Car Battery YBX3075 (HB075 / HCB075) Yuasa 12v 60Ah 550A Car Battery YBX3075 (HB075 / HCB075) Modern cars often require more powerful batteries to power air conditioning stop/start systems sat navs in-car DVD players and phones. The following options are available in the Yuasa range. Yuasa YBX5075 Silver Series BatteryThere are many types of charger available; their working principles and the procedure for using these is given below. Smart Chargers We receive data from battery manufacturers and this may be subject to change and / or manufacturing tolerances.

C. Note. The majority of constant potential chargers are incapable of charging a severely over discharged (below 11.00V) battery in a realistic period of time. A minimum of 24 hours is normal. It might be impossible to charge an over discharged battery. Modified Constant Potential Chargers

Smart Chargers

The majority of commercial chargers, particularly home-chargers, are of this type, and allow neither the voltage nor the current to be preset. Use the same procedure as for Constant Potential Chargers in the paragraph above. Boost Chargers 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.

For example, if the battery has a voltage of 12.16V, charge it for 10 hours at the recommended charge rate. A. Boost charging is not recommended except in exceptional circumstances e.g. a stranded customer, as this will reduce battery life, especially if a battery is boost-charged more than once. B. Never boost-charge any battery that is below 11.00 Volts as it will be too sulphated to accept a charge; scrap the battery or charge normally. Note. Many customers severely underestimate the amount of time necessary to charge a flat battery. This results in customers returning batteries saying that they have charged the battery but that it is still not holding charge. Switch on the charger. See below for the correct charging conditions depending on your type of charger.C. Charge the battery at the recommended charge rate. If you cannot set the recommended rate, extend or reduce the charging time on a pro rata basis. For example, if the recommendation is to charge the battery at 4.0A for 6 hours (24Ah = 4.0 x 6), charge the battery for 12 hours if you can only set the charger at 2.0A (24Ah = 2.0 x 12). D. Charge the battery for the number of hours shown in the table below depending on the open-circuit voltage. 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.

Stop charging if the battery begins to gas freely (some gassing is normal during the last stages of charging) or if the battery temperature rises above 50°C.

If you are using a constant-current charger or a boost-charger, remove the vent-plugs or manifolds before charging. There is no need to remove the vent-plugs or manifolds if you are using a constant-potential or a ‘smart’ charger.