SolaX Triple Power 5.8kWh TP58 Master Battery V3

SolaX Triple Power 5.8kWh TP58 Master Battery V3

The SolaX Triple Power 5.8kWh TP58 Master Battery V3 is the master battery for the current TP58 high-voltage storage range. Also listed as the T-BAT H 5.8(H) V3, this is the battery that starts the system because it includes the integrated battery management system. In simple terms, it is the battery you need first. A slave battery cannot do the same job on its own.

That is the most important distinction on this product. In modular battery systems, the master battery is what establishes communication and control across the stack. If a customer is building a new TP58 system, this is the correct starting point. If they only need to add capacity later, that is when the matching slave battery comes into the picture.

What the TP58 Master V3 is used for

The TP58 Master V3 is used to start a compatible SolaX Triple Power battery system. It suits new installations, replacement projects and battery systems that may be expanded later with matching TP58 slave batteries. Because it begins at 5.8kWh, it also gives buyers a sensible entry point into battery storage without forcing them into a larger stack from the outset.

It can be a particularly good fit for homes looking to shift more solar energy into the evening, reduce import during higher-cost periods or create a battery setup that can grow over time. It is also useful where the buyer wants a current-generation TP58 battery with improved weather protection and built-in heating.

Main features

• 5.8kWh nominal battery capacity
• Integrated master battery with built-in BMS
• LiFePO₄ battery chemistry
• 95% depth of discharge
• Over 6000 cycles
• IP66 rated enclosure
• Built-in two-level battery heating
• Wall or floor mounting

The integrated master format is a big practical advantage because it removes confusion at specification stage. This is not just another battery module in the range. It is the one that establishes the system and allows the stack to function correctly.

SolaX also states 95% depth of discharge, which means more of the battery’s stored energy can be used in normal operation. That matters for real-world performance because usable energy is often more important than the headline capacity number alone.

LiFePO₄ chemistry and a cycle life of more than 6000 cycles make this battery well suited to regular daily use. For most homeowners, that means a battery designed for ongoing charge and discharge as part of everyday energy management rather than occasional backup only.

The V3 version also brings IP66 protection and built-in heating. For UK conditions, those are meaningful features. They can help support a wider range of installation environments, provided the battery is installed correctly and in line with manufacturer guidance.

Installation and system planning

The main installation point is straightforward: every TP58 system needs a master battery. A slave battery cannot be used on its own, so this is the mandatory first battery for any compatible TP58 stack.

The battery can be wall mounted or floor mounted, which gives installers more flexibility depending on the site layout. At the same time, it is still a substantial battery unit, so weight, access, mounting surface and cable routing all need to be considered properly before installation.

Compatibility with the intended inverter is also important. TP58 batteries are used within SolaX high-voltage battery systems, so the final battery count and layout should always match the inverter model and the wider system design.

Expansion and compatibility

Once a TP58 Master V3 is installed, the system can be expanded with matching TP58 slave batteries. That makes it a useful starting point for customers who want to begin with a single battery and add more storage later.

Channel information also indicates that V3 TP58 batteries maintain compatibility with existing V2 systems for certain replacement or expansion scenarios. That can be helpful where a site already has an earlier TP58 setup and the customer wants to extend or update it without replacing the entire battery system.

Why buy the TP58 Master Battery V3 from Evergy

At Evergy, we know that battery system roles need to be clear. The SolaX Triple Power TP58 Master Battery V3 is the correct product for starting a compatible TP58 battery system, and it gives customers a solid foundation for future expansion.

It is a strong option for buyers who want a current-generation SolaX high-voltage battery with good usable capacity, built-in heating, strong ingress protection and a straightforward path to adding more storage later.

Related ranges

You can also browse our wider solar batteries range or view more SolaX products to compare compatible storage options.

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