Home Energy Storage — which batteries suit you best?
A topic that looms large in our minds is electricity storage. Photovoltaics is very popular nowadays, but to benefit from its advantages, you must find a place to store your energy. Let’s compare popular types of electricity storage, which are most often in use.
OPzS and POPzS batteries
OPzS batteries are designed primarily for standby operation (emergency power source). The battery life is up to 20 years, and its most recognized feature is efficient cyclic operation. Batteries with liquid electrolytes are self-discharge resistant. This kind of battery is also very water-saving friendly.
The electrolyte level (usually sulfuric acid) can be conveniently controlled, and the need to top up the water occurs only once in 15 years. OPzS and POPzS batteries allow you to reduce operating costs significantly, thanks to minimizing the losses arising during usage. OPzS and POPzS- based electricity storage should be used primarily there, where we want lasting reliability.
OGI-L batteries filled with a liquid medium are ideal for use in systems with a short discharging time. The main feature of these batteries is high efficiency and the highest safety during operation. The OGI battery has a low internal resistance and thus good voltage condition when discharged. Emergency systems and energy stations need high efficiency and reliability to perform their best for you — you will find both in OGI batteries.
OPzV and PzV batteries
OPzV and PzV batteries are structures filled with gel. Their main feature is the long service life. In the case of OPzV batteries, the battery life is 20 years. Furthermore, OPzV batteries show excellent parameters in cyclic operation. They can be mounted horizontally and vertically, which increases ergonomics and various possibilities of their use. Gel batteries are also very effective in heat dissipation, which arises in the battery during the flow of electricity. It is also worth noting the high resistance of OPzV batteries to discharge with low currents. The operating cost of OPzV batteries is exceedingly low.
When choosing an OPzV battery, you should consider a reasonably high price. PzV batteries, i.e. gel traction batteries, are also very resistant to self-discharge. It is worth mentioning that gel batteries should only discharge to 20% ensuring long service life. They are easy to use and completely maintenance-free. In the event of any damage, there is no leakage. It prevents any corrosion and ensures safety during operation. Gel batteries’ main application in the home is to power renewable energy systems. It is worth knowing that the effect of high temperature on gel batteries causes the gel to dry out, which reduces its capacity.
AGM batteries distinguish by fast charging and high charge-taking capacity. This type of battery can work in various positions. AGM’s characteristic feature is high current efficiency and high resistance to damage and shocks. AGM batteries do not require adding electrolytes or performing maintenance. AGM batteries differ from gel batteries not so much in the principle of operation as in their design and application.
In the case of a gel battery, there is no need to check the electrolyte level or its density. In the home, AGM batteries work for emergency power, alarm system or telecommunications systems. It is good to know that their resistance to cyclic operation is less than half of the resistance of other types of batteries.
Li-ion batteries are lithium-ion cells. They are widespread, especially in the field of consumer electronics. Light and with no memory effect. You can recharge them at any moment. Li-ion batteries are in favour because of their long life and quick charging. However, they also have some disadvantages, mainly that deep discharge and overcharging can damage the battery. After ten years of operating, you must replace the battery for safety reasons. The Li-Ion battery is an expensive solution – you should consider it when choosing this type of battery.
Batteries with liquid electrolytes have the highest parameters, efficiency and functionality in domestic applications. Reasons in favour of them are long life and excellent value for money. It is emphasized on many occasions by the manufacturer of the battery. Batteries with liquid electrolytes are perfect for many everyday applications. It is an excellent option as energy storage for photovoltaics or other renewable energy systems.