When fitting the charger to the battery, connect the positive lead to the positive terminal and the negative lead to the negative terminal. The batteries are among the first in the UK and Ireland to carry EN50342-1/6 European Standard performance markings which were recently introduced. Every battery in the range has undergone extensive performance testing and having passed stringent requirements, has earned a classification number for Water Loss (W1 W5), Charge Retention (C1 C2), Vibration Level (V1-V4), Endurance (E1 E4) or Micro Cycle performance (M1 M3). Featuring the very latest technology and a host of advanced safety features, all batteries in the range are of Original Equipment (OE) quality and performance. Their advanced construction and unparalleled innovation make them the most reliable commercial vehicle batteries Yuasa has ever produced. 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.

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).E. If you are charging a battery below 11.00V (over discharged) that has been in service, a specialised charger capable of providing a very high charging voltage may be necessary, and the recommended current may not be obtainable at first. In this case, monitor the current and adjust as necessary during the charge. If a battery has become over discharged, it will have lost both life and performance because of irreversible sulphation. Charging may reduce further its potential life. Constant Potential Chargers

C. Only use a boost-charger that limits the charging voltage to a maximum of 14.2 Volts and that has a temperature monitor.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.

Batteries in the YBX7000 EFB and YBX5000 ranges feature Yuasas XVR Extreme Vibration Resistance. This means that they have a vibration resistance of over eight times V4. V4 is the highest level rating that European standard EN50342 requires. Batteries in these ranges, plus all YBX3000 DIN types, are suitable for rear chassis location fitting. GS Yuasa Battery Europe Ltd have launched their all new Yuasa YBX Super Heavy Duty battery range for commercial vehicles. The four-tiered range is available now and provides one of the most comprehensive and highest specification offers on the market. 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. 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.

Constant Current Chargers

The YBX3642 has an extra plate in the battery, fitting the lower specification YBX3640 / 640HD (or equivalent part in other brands) on these applications can lead to premature failure or poor performance from the battery.