I would also like to note that if the battery was completely discharged, its voltage during charging should also be slightly reduced to 12-13 volts. In this case, it is necessary to control that the current strength at the beginning of the process does not exceed 1/20 of the battery capacity. If this value exceeds, reduce the voltage. The Bosch S4 Blue are suited to cars with medium electrical demand such as air conditioning, heated seats, cruise control etc. These Bosch Batteries will normally be fitted to modern vehicles typically from 2000 onwards. The grid is of crucial importance for a battery's performance and reliability. The patented PowerFrame® offers considerable advantages over conventional grids, and is responsible for an optimum flow of electricity.

Please note: We pay for a next day delivery service (Monday - Friday) but due to Covid issues some couriers may experience staff shortages which is sadly out of our control. Our next day delivery rate is currently 97%. WHERE DO WE DELIVER TO? Remember that the battery must be charged in a well-ventilated area, since during this process substances that are harmful to the body are released. It turns out that the maximum maintenance-free battery can be charged at a voltage of 16.3-16.4 volts for 20.24 hours. Terminal Layout: Negative (-) on left,Positive (+) on right ; with the terminals on the edge of the battery closest to youAlpha Batteries bears no responsibility for whatsoever for loss occurred due to late or failed deliveries. The rigid, precise structure ensures excellent adhesion of the active material to the grid and permits low-resistance, rapid charging and discharging of the battery. In contrast to conventional grids, there is no brittleness arising from mechanical deformation during production. Most of our online products include VAT and FREE Delivery to the UK Mainland only. We pay our couriers for a next working day service. Sometimes (although rarely) courier issues can delay parcels, so please allow up to 48 hours for delivery. Please see above for extra charges. And one more nuance, if you charge only your car’s battery from time to time, then buying the necessary charger is an unreasonable waste of money, because charging a maintenance-free battery in a specialized center will cost you much less than purchasing a device. Video: How To Charge A Bosch S4 Battery

Bosch S5/S4/S3 batteries therefore impress with their outstanding starting power and longer service life. Larger Commercial & Marine batteries which need to be sent via pallet may incur an extra postal charge.After the above operations are done, turn on the charger, set the voltage to 14.5 volts, if there is a voltage regulator, set the current to the minimum value, after which the charging process begins. Maintenance-free batteries should only be charged with automatic chargers. The peculiarity of such batteries is that the degree of charge of the battery at the end of the charge directly depends on the magnitude of the charging voltage that the charger provides. For example, at a voltage of 14, 4 volts, a 12 volt battery can charge approximately 75% in 24 hours. 85% if the voltage is 15 volts at the same time by 85%. 90%, and at a voltage of 16 volts. by 95%. 97%. We deliver to Most areas within the UK Mainland. For offshore UK islands please call 0800 195 98 97 as charges will apply. If nobody is home or the courier does not feel its safe to leave securely, they will reattempt the following day. They normally do this 2 times and then return to the sender (us).

During charging of the battery, the current will decrease, and when the process comes to an end when the voltage at the terminals is 14, 4 volts, the current will correspond to the value of the self-discharge current of the battery. this is approximately 200 mA or 0.2A. Important to remember! If for serviced batteries, the nominal current during charging is 1/10 of the battery capacity, then for maintenance-free batteries, the main indicator during charging is not the current strength, but the voltage.

The capacity is 95 Ah. The capacity describes the ability to store electrical charge. Because the acid battery is maintenance-free, there is no need to top up with water. Pay attention to these values ​​when buying More lead is applied to the areas subject to a higher load: the grid is more hard-wearing and resist The Bosch S5 Silver are suited to newer vehicles with higher electrical demands that come equipped with features such as parking sensors, trip computer, heated front windscreen etc. These Bosch Batteries are mainly for the latest high end vehicles and large diesel Engines. We are unable to ship to the following post codes on any service but may be able to obtain a quote: