Batteries for electric fence: how to make the best choice

How do you choose the right electric fence batteries for your needs? First, find out the main differences between the different battery types; zinc-air and alkaline batteries for example, which are certainly the most commonly used batteries for powering electric fences. Understanding their characteristics and specific functions will be a valuable guide to your choice.

Here is the range of electric fence batteries on offer at TuttoBatterie

At TuttoBatterie you can find several lines of electric fence batteries for both livestock professionals and private individuals who use fences for their animals or as protection for gardens and vegetable plots.

Our range comprises three different types:

Traditional zinc-air batteries, which although by far the cheapest, deliver good performance and then there are alkaline batteries, which ensure an even better performance thanks to their higher energy density, guaranteeing round-the-clock efficiency for months. There is also a third type, which includes lead acid free batteries and hermetic gas recombination batteries. These are only used, however, when the electric fence is connected to a charging source, or, alternatively, to a solar panel. If this is not the case with your fence, then zinc-air or alkaline batteries are the best option.

Let’s take a closer look at the characteristics of zinc-air and alkaline batteries which are certainly the most widely used for electric fences.

Zinc-air batteries

Zinc-air batteries are rechargeable batteries which use an atmospheric oxygen cathode (which receives electrons, reducing them) and a zinc anode (which releases electrons, oxidising them). The very movement of the electrons generates a potential difference and therefore an electrical voltage which is used to power various types of electrical circuits. Zinc-air batteries belong to the fuel cells category, where zinc is the fuel and oxygen is the oxidiser. When the surfaces of the zinc metal electrodes are completely oxidized, the batteries are considered to be discharged. As we have seen, zinc-air batteries are reasonably priced, but cannot be recharged by the user. Once discharged, they must be replaced with new battery packs. The old battery packs are then regenerated through an electrochemical procedure by specialized industries or automated service stations.

Alkaline batteries

What differentiates alkaline batteries is that alkaline electrolytes such as potassium hydroxide are used. The anode consists of zinc and the cathode of manganese-oxide. During operation, the first two elements are consumed, while the potassium hydroxide does not change over time, as it is both used and produced in equal quantities during the reaction. The presence of potassium hydroxide is essential as it prevents gas production, does not cause voltage drops. and remains constant over time, even under a substantial load. Alkaline batteries owe their name to the gelatinous paste called alkaline, in which zinc powder and manganese oxide are immersed. They are then separated by a special membrane allowing the passage of ions, but not of the respective zinc and manganese oxide powders.