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THE 5 FAQ

AND THE ANSWERS

In order to achieve full performance and service life, the battery must be fully charged prior to installation (1. + 2.).

 

1. Bike Bull
Preparation. The degassing vent is closed and must be opened before putting into operati­on. Remove the protective cap, or cut off the degassing hose at the end.
Filling. Remove all battery stoppers. Only use special acid (density 1.28 kg/l), which is supplied with the battery in a special plastic container. Fill to the maximum mark and then allow the battery to rest for 30 minutes.
Warning! The acid container with any residual acid should be brought to a hazardous was­te collection point. Acid residues may not enter the sewerage system. Empty acid containers should be disposed of as domestic plastic waste.
Commissioning. In order to reach full performance, once the battery has been filled with acid it must be fully charged prior to installation. In accordance with the instructions for use of the charger and the battery, charging can take place for approx. 5-10 hours at a maximum of one-tenth of battery capacity (Ah).
Battery capacity can be ascertained by means of the DIN number on the individual box. Num­bers 2 and 3, e.g. 509 14 have 9 Ah capacity and therefore require charging current of approx. 0.9 A. After charging, the acid level should be checked and if necessary topped up with demi­neralised water. The battery can then be closed with the stoppers.

Maintenance. Never allow the acid to fall below the minimum level. Only use demineralised water (desalinated or distilled water according to VDE 0510).

Please note! The Bike Bull cannot be installed in a lateral position!

 

2. Bike Bull AGM
Preparation. Remove the battery seal shortly before filling. A slight hissing sound can be heard.
Filling. Only use special acid (density 1.32 kg/l), which is supplied with the battery in a special plastic container. Then allow the battery to rest for 30 minutes. After filling, the battery is closed with the stopper strip and may not be reopened, as this would destroy the battery! Warning! The acid container with any residual acid should be brought to a hazardous was­te collection point. Acid residues may not enter the sewerage system. Empty acid containers should be disposed of as domestic plastic waste.
Commissioning. In order to reach full performance, once the battery has been filled with acid it must be fully charged prior to installation. In accordance with the instructions for use of the charger and the battery, charging can take place for approx. 5-10 hours at a maximum of one-tenth of battery capacity (Ah). Battery capacity can be ascertained by means of the DIN number on the individual box. Numbers 2 and 3, e.g. 518 21 have 18 Ah capacity and therefore require charging current of approx. 1.8 A.
Please note! The Bike Bull AGM cannot be installed in a lateral position!

 

3. Bike Bull GEL, AGM PROfessional
Putting into operation. The battery is fully charged and ready for install. 

Please note: The Bike Bull GEL / Bike Bull AGM PROfessional can be installed in a lateral position!


Use of a voltage controlled Banner Accucharger 6/12V 2A or  12V 3A is recommended.
Warning! Never install a maintenance-free battery (AGM, GEL, AGM PROfessional) in a motorcycle without a regulator, as the maximum voltage may not exceed 14.8 V.

Bike Bull Motorradbatterie Inbetriebnahme

You can calculate the correct capacity for your Energy Bull as shown in the following example:
You need a battery for an electrically powered boat. A 600W e-motor is used with a 24V electrical system. In addition, a radio, various navigation lights and a depth sounder have to be supplied with power (total 50W). Five hours of autonomous operation are required.
 
These values are now used in the following equation:

Wattage: Volt = Ampere x Hours x Safety Factor = Battery Capacity in Ah i.e. 650 : 24 = 27 x 5 x 1.7 = 230Ah (k20)

 

A safety factor of 70% should be used for wet batteries (30% for AGM and gel recombination batteries). In the case above, two Energy Bull 968 01 batteries (230Ah each) used in sequence would be advisable.

Finding the right battery for use in a motor caravan is not that simple. The text below is intended to provide some explanations regarding the Energy Bull and shed some light on alternative possibilities. 

 

Charging:
Pay close attention to the appropriate dimensions of the feed cable (in order to minimise voltage loss).

The charging voltage for Energy Bull batteries should amount to 14.2 – 14.4V. In order to achieve suitable battery life, the charging current should not amount to more than five times the rated current* (see subsequent calculation).  

All in all, the Energy Bull is a good cyclical battery, which forgives a great deal (as opposed to gel or AGM batteries).  The “disadvantage” of Energy Bull batteries as compared to AGM or gel batteries relates to maintenance. For when an Energy Bull battery is employed, it is imperative that the electrolyte level is checked regularly. During intensive use (camping operation) this should take place on a monthly basis, otherwise quarterly and half-yearly inspections are sufficient.

Gel and AGM batteries are maintenance-free. 

A reasonable price, insensitivity to high temperatures and higher charging voltages are all positive factors in favour of the Energy Bull. 

 

Solar cells
In the case of solar cells make certain that you have a “good“ regulator. Ideally, this should have pulse-width modulation (PWM), temperature compensation and freely selectable parameters (charging voltage...). 

 

Discharging
Inverters require a sizeable amount of discharge current from the battery.
In principle, Energy Bull and gel batteries are unsuitable for high current discharges (>40 times the rated current* for >1min).
Should you require increased amounts of discharge current, we recommend the use of an AGM battery (Running Bull).  
*--> Calculation of the rated current follows!

 

Capacity
It is preferable that the batteries are only operated with low discharge depths.
A lead-acid battery can withstand a certain degree of capacity conversion (= number of conversions of the rated capacity).
The flatter the cycle, the higher the number of possible repeats.
As far as cyclical capability is concerned, if handled with care the gel battery offers roughly twice the service life of an Energy Bull.

 

Degassing
Should the battery be installed inside the vehicle, it must be fitted with a degassing hose with an external outlet. When selecting a battery please choose a type that has a central degassing connection.
--> This allows the gases created during charging (hydrogen and oxygen) to be conducted out of the vehicle.

In a normal operational condition, AGM and gel batteries do not generate any gas (exception: a charger or battery defect). However, for safety reasons a degassing hose must be employed.

Energy Bull batteries generate gases during standard operation and therefore it is essential that a degassing hose is used.


*Rated current calculation

Example: 100Ah (K20) Energy Bull 95751
Rated current (In) = 100 Ah: 20 h = 5A
Maximum charging current = 5 x In = 25A

As a result of our experience, we know that sufficient charging of the battery when driving is unfortunately only possible to a very limited extent. Particularly in summer (air conditioning running at high power, lights on, radio playing, refrigerator running,...) there is very little residual current for the complete recharging of a battery. In some cases, the living area battery must even support the on-board supply ...

 

The use of a B2B charger represents a sensible approach. At the very least, these devices serve to raise the charged voltage to a reasonable level. 

 

If, for example, your batteries are approximately 50% discharged (95A are missing) some 105 Ah have to be recharged in order to bring the battery up to full power.

At best, 15A (on average) remain for the living area battery and this means that you would have to drive your vehicle for at least 7h in order to achieve full charging!

 

In order to obtain the maximum service life from your battery, please ensure complete separation from the on-board supply when the vehicle is not in use (>7 days).
--> Appropriate full charging of the battery should take place beforehand. 

Yes, in the case of many battery types.

 

The Power Bull and Power Bull PRO Europa types (total heights 175 or 190 mm), as well as the Running Bull AGM and EFB batteries (Europa types, total heights 175 or 190 mm) have an opening for the central degassing connection in the battery lid, which is either on the left-hand side (-terminal side in batteries with connection 0) or on the right (+terminal side in batteries with connection 0).
 

If in your case, the side of the degassing opening is unsuitable, the white plug can be removed, but must then be reinserted on the other side in the degasification duct (in order to prevent the escape of oxyhydrogen gas).

 

In order to remove the plug, please use a wood screw with a diameter of approx. 5 mm. There is no need for concern, as the plug cannot be pushed into the battery. 

 

P.S. The Starting Bull Europa types (total heights 175 or 190 mm) have an opening for the central degassing connection on the right-hand side (+terminal side in batteries with connection 0, -terminal side with connection 1). Please note that no change of degassing side is possible.   
 
The current installation situation in brief:
For all the batteries in the latest BMW and Mercedes-Benz vehicles, degassing is on the + terminal side and therefore on the right in the case of batteries with connection 0. 
In currently manufactured VW Group vehicles all batteries are degassed on the - terminal side and therefore on the left in the case of batteries with connection 0.