The ICS 5.12 kWh stackable battery module (Part No: ICSESS1) has been officially discontinued with no confirmed successor. This guide explains what that means for existing systems and which battery ecosystems to move to instead.
ICS 5.12 kWh discontinued and no more stock coming
ICS has confirmed that the 5.12 kWh stackable battery module is end of line. Production has stopped and there is no replacement model scheduled in the short term.
In practical terms for installers:
- Manufacturing of the ICS 5.12 kWh module has ended and no new batches are planned.
- Any units left in the UK market are legacy stock sitting in distributor or installer warehouses.
- Once those units are used, there is no confirmed successor using the same stackable format.
- DECO Group will not be receiving any more ICS 5.12 kWh modules and we cannot supply this product for new or existing projects.
Installers should treat the ICS 5.12 kWh battery as fully end of line and avoid specifying it in new designs.
Can installers still buy ICS 5.12 kWh batteries?
Realistically, only if someone has a few units left on a shelf. No new deliveries are entering the supply chain.
At this stage most major wholesalers have already sold through their remaining ICS stock. Any batteries you see advertised are almost certainly final remnants and availability can change quickly. There are no new factory runs and no confirmed successor system that lets you keep the same stackable architecture.
If you already have a system built around ICS batteries, you may find it difficult to source matching modules for expansion or one to one replacement in future.
Can I mix ICS with other battery brands?
ICS has not confirmed any compatibility between the ICS 5.12 kWh module and batteries from other brands. Mixing batteries from different manufacturers is done entirely at your own risk.
- There is no official statement from ICS that endorses combining their batteries with third party modules.
- Mixing brands can introduce electrical and BMS conflicts that are not obvious until something goes wrong on site.
- Using unapproved combinations can affect warranties for both inverter and battery manufacturers.
In short, connecting non ICS batteries into an ICS stack is untested, unsupported and at the installer's risk. For new work, the sensible route is to move to a fully supported ecosystem from a single manufacturer.
What this means for ongoing projects
If you have used ICS 5.12 kWh in a design, you now need to decide whether to chase legacy stock or redesign.
- Option 1: Redesign around an alternative supported battery platform. This is the realistic path for most installers, especially for jobs that have not yet been sold or installed.
- Option 2: Try to source final ICS units. You might find leftover stock with a distributor or another installer, but quantities are likely to be scarce and rare.
- Future expansion. Clients who plan to expand systems later will struggle if you stay locked into a discontinued battery format.
- Support and warranty. Active ecosystems with clear roadmaps are easier to support over the life of the system than a dead product line.
For most installers, moving projects onto an active battery ecosystem is cleaner, safer and easier to explain to clients than hunting for legacy stock.
ICS 5.12 kWh (ICSESS1) at a glance
Item |
Detail |
|---|---|
Product |
ICS 5.12 kWh stackable battery module |
Part number |
ICSESS1 |
Status |
Discontinued, manufacturing stopped |
Successor model |
No immediate successor confirmed by ICS |
Availability |
Only if a distributor or installer has old stock on hand |
Cross brand compatibility |
Not confirmed by ICS. Any mixing with other brands is at the installer's own risk. |
Information above is intended to help with planning. Always confirm the status of any legacy product directly with your supplier if you plan to use it.
Legacy ICS 5.12 kWh module reference
This is the stackable ICS 5.12 kWh module that has now been discontinued. Include it in your project notes so it is clear which hardware the client has on site.
ICS 5.12 kWh stackable battery module
Legacy ICS stackable battery module. Discontinued with no confirmed successor. Shown here for reference on existing systems and O&M documentation.
Best alternatives to the ICS 5.12 kWh battery
Since there is no direct ICS successor, the practical solution is to move to a modern battery ecosystem from a brand with a clear roadmap and strong UK presence.
Below are popular options that UK installers regularly specify as replacements or for new designs.
Sigenergy hybrid inverter and battery systems
Premium all in one hybrid systems with stackable batteries and strong UK support. Good fit for higher end domestic and commercial projects replacing legacy ICS designs.
GivEnergy batteries and inverters
UK favourite for home storage with strong software and flexible sizing. Suitable for many domestic systems that might previously have used ICS.
Anker Solix home energy storage
Modern modular storage systems suited to homeowners who want a branded, app led experience with clear upgrade paths and active development.
SolarEdge batteries and optimised systems
Full ecosystem with optimisers, inverters and matched batteries. Useful where you already have SolarEdge on site and need a storage solution from the same manufacturer.
SunSynk hybrid systems and storage
Popular hybrid and battery combinations that give flexible storage options and strong value across a wide range of domestic and light commercial installs.
The right alternative will depend on the inverter brand, site layout and client priorities. For best results match the battery ecosystem to a supported inverter platform rather than trying to retrofit unapproved combinations into an ICS system.
Need a replacement for an ICS 5.12 kWh design?
Send your existing ICS design, inverter details and target storage capacity. We will suggest supported alternatives from brands like Sigenergy, GivEnergy, Anker Solix, SolarEdge or SunSynk and line up a full bill of materials.
For trade quotes call 03335 777488 or request a proposal by submitting your parts list at checkout.