KSTAR: Як забезпечити довговічність ESS? ⚡️

Each rechargeable battery has a nominal capacity that represents the maximum amount of energy stored, i.e. 100%. However, this capacity cannot be fully used. At both the upper (100%) and lower (0%) capacity limits, critical points occur that can cause destruction of the battery cells and possibly accelerated battery degradation.

Depth of Discharge (DoD) refers to the percentage of a battery's capacity that is discharged relative to its total nominal capacity. For example, a DoD of 80% means that the battery has been discharged to 80% of its total capacity and the remaining 20% is the reserve.

To maximize battery life, it is crucial to monitor not only the maximum charge and discharge currents (C), but also the DoD value. A higher DoD means higher battery capacity utilization, but it also accelerates battery degradation.

Effect of DoD on battery life
In general, the lower the DoD, the longer the battery life. This is due to the reduced exposure of battery cells to extreme conditions that increase the risk of degradation.

The most common compromise between lifetime and usable capacity is a DoD between 80% and 90%. For example, for a 1 MWh battery this means a realistic usable capacity of 800-900 kWh. This value provides a large enough buffer to protect the battery cells while ensuring a reasonable usable capacity.

The depth of discharge (DoD) setting is a key factor in maximising battery life. Too high a DoD value can shorten battery life, while too low a value reduces usable capacity. The key is to find the optimal value that strikes a balance between capacity and long-term sustainability.

A KSTAR solution for all
KSTAR products are designed for those looking for reliability and simplicity in everyday operation. They are ideal for demanding users who appreciate quality workmanship and ease of installation.

With premium CATL battery cells and intelligent design, KSTAR solutions are characterized by exceptional safety, efficiency and flexibility. They are definitely the right choice, whether for use in the home or for energy management in the commercial sector.

As an official KSTAR distributor, Green Energy Trading can offer you all the technical support and advice you need.

We offer expert seminars on KSTAR products at our training centre in Znojmo. We also have KSTAR KAC50DP-BC100DE training equipment available. You can see this ESS suitable for commercial use with your own eyes and try its operation.

For those of you who have our headquarters in Znojmo at hand, we of course also offer online training and remote technical support.

KSTAR BluE-S Series
The KSTAR BluE-S Series residential energy storage system is a state-of-the-art All-In-One three-phase energy storage product. It provides a safe, smart and highly efficient solution for residential installations. This AIO solution uses CATL battery cells.

The three-phase hybrid inverter offers a smart modular design and online monitoring via an app. In addition, the ability to program the tariff according to time of use. For example, charging at night during off-peak hours and usage during the expensive peak afternoon.

Low maintenance costs and easy installation are a big advantage.

KSTAR BluePulse
KSTAR BluPulse commercial energy storage systems are characterized by safety, reliability and user-friendliness.

The KSTAR ESS KAC50DP-BC100DE and KAC50DP-BC197DE outdoor solutions are designed for small to medium-sized energy storage applications and microgrid projects in the commercial and industrial sectors.

Integrated with the CATL LFP battery solution, they provide secure energy storage and management of the energy produced.

It offers storage scalability up to 2 MWh capacity as well as several basic operating modes (self-consumption, peak load management, backup).

The KSTAR KAC50DP-BC100DE cabinet was the first of its category to pass the demanding PPDS certification tests at the BUT laboratories in Brno. KSTAR's KAC50DP hybrid inverter is now the first inverter to be officially certified by the Engineering Testing Institute (ETS).

The cabinet is to be connected to the grid while complying with the subsidies.