This is the best choice if a mains socket is available.
Available in all necessary power classes, with unlimited protection period. Providing the best means of delivering the energy required (0.5 joule up to 20joule output) on long fences or fences with vegetation or for robust /stubborn animals. Although this will provide a higher joule output it remains compliant with applicable safety standards.  

Best of both these units possess both the 230volt mains and 12volt battery. These units come with main/battery adapters and cables.

If mains power is not an option then a 12volt battery energisers are the best solution for robust animals or a long fence or a fence with some vegetation. The discharge energy is comparable with mains devices (0.5 joules up to around 20 joules of output) 12volt rechargeable wet batteries are used as the power source. Not all units come with batteries. Batteries will need to be charged on a regular basis. Adding a solar module to this set up can trickle charge the battery over time. However you may still need to charge the battery during long dark winter months. We do advise that invest in two batteries so one can be in charge whilst one is being used on the fence.

These units are suitable for shorter fences with no vegetation. These batteries are much lighter than a 12volt battery. Depending on operating time and pasture size a 9volt battery can run for a few months and may be able to cover the entire pasture. The battery type and size (expressed in Ah) Ampere hours. The higher this value the longer the dry battery will run for. Once this battery has discharged it can not be recharged. 9volt units even if they are 12volt compatible will typically deliver 0.15 joules - 0.35 joules. Only high impact 9volt units can deliver 0.55joules. 

As we only stock kerbl and Rutland energisers we can only provide information on these compact solar units.  Using a mono-crystalline solar modular in combination with a high performance solar fence device, these energisers are now able to supply power to fences that are many kilometres in length. This can still provide a sufficient power even after a week without sufficient sunshine. These special devices are suitable for large remote areas where mains power is not an option and carrying and maintaining batteries and equipment on a regular basis is heavy and difficult. These units are compact and light weight even though they have a 12volt AGM battery built into the unit which in turn is charged by the integrated solar panel system. If for any reason the unit needs charging it can be charged using mains.

This voltage is reached with a low fence charge.

 Voltage when no fence system is connected to the energiser.

Voltage at a fence charge of 500 Ohm

Energy absorbed by device. The electric fencer efficiency ratio yields the relevant discharge energy value for the user.  

Maximum energy transmitted from the energiser to the fence system. This pulse is also identified as shock strength.

Minimum energy transmitted from the energiser to the fence system. This can be reached through a fence output with reduced power or by selecting the lowest power level of an energiser. 

With fence lengths in accordance with VDE, only a theoretical value is given, which, as a result of various influences ( fence vegetation, weather and soil conditions) cannot be reached in practice.

Vegetation on the fence has a considerable influence on the max fence length for an electric fence energiser. The more vegetation on the fence, the higher the fence charge will be, thus reducing the maximum fence length. The fence length indication refer to highly conductive wire material and connectors, good isolators and an optimal earthing system.

3 volt devices are mobile and easy to handle, and are suitable for for very small fences with no vegetation, such as in gardens, game pen control.

The duration of the battery life can be calculated from the energy consumption along with the capacity of the battery.