SolaX Triple Power Series Box for TP-HS25/36 Batteries

SolaX Triple Power Series Box: The Essential Expansion Accessory for Large-Capacity Battery Systems

The SolaX Triple Power Series Box is designed to safely connect two parallel strings of TP-HS25 or TP-HS36 batteries, enabling installations to go beyond the standard five-module limit. Whether for large homes, commercial setups, or users with high energy demand, this series box makes scalable storage possible, without compromising system integrity or compliance.

Prewired for speed and simplicity, it offers a robust solution for high-capacity builds needing up to 10 SolaX battery modules.

Expand Capacity to 10 Battery Modules

Normally, a single SolaX BMU supports just five battery modules. With the Series Box, you can double that, safely running two sets of five TP-HS25 or TP-HS36 batteries in parallel. This boosts usable capacity up to 36kWh, making the system viable for heavier consumption profiles or future expansion plans.

This solution is ideal for users already maxing out their current system or installers planning for additional storage down the line.

Simple, Prewired Design for Fast Setup

The Series Box is delivered prewired, minimising installation time and reducing wiring errors. Clear labelling and secure internal connections ensure straightforward configuration for electricians, while maintaining compliance with manufacturer specifications.

• Connects two strings to one inverter via a single BMU
• No external breakers or third-party enclosures needed
• Space-saving 510 × 365 × 152 mm form factor

Purpose-Built for TP-HS25 and TP-HS36 Compatibility

Developed specifically for the TP-HS range, this Series Box integrates directly with SolaX TP-HS36 batteries and the required BMU MCS0800. It ensures both parallel strings are synchronised and safely managed, unlocking higher storage without compromising stability or support.

Built for Safe High-Capacity Storage

The Series Box ensures your dual-string battery system operates safely and within SolaX’s approved design limits. It plays a key role in maintaining balance across parallel battery groups, helping to avoid uneven cycling or overcurrent scenarios.

All wiring is enclosed within a protective metal housing, and the unit complies with recognised safety and installation standards, giving peace of mind for both installers and homeowners.

Why Evergy Recommends This Product

If your solar battery system needs to exceed the standard five-module limit, the Series Box is the only approved way to do it. By pairing this with a BMU and SolaX inverter, you gain a stable, manufacturer-backed way to scale your energy storage up to 36kWh.

It's a smart investment for energy-intensive households, commercial properties, or those looking to futureproof their install without starting from scratch.

Ideal for High-Usage Households and Businesses

This product is best suited for customers planning large-scale solar storage systems, such as off-grid setups, time-of-use tariff optimisation, or commercial applications with variable load profiles. It's also valuable for solar users in properties with electric heating, EV charging, or multiple residents.

Technical Specifications

• Dimensions: 510mm x 365mm x 152mm
• Weight: 8.8kg
• Max Battery Modules: 2 strings of 5
• Compatible Batteries: TP-HS25 / TP-HS36

For full specifications, view the datasheet.

Supports Smart Tariff Charging

When installed as part of a complete SolaX hybrid system, the Series Box indirectly enables compatibility with smart charging tariffs. By expanding your usable storage, it allows you to capture more off-peak energy from providers like Octopus Flux and use it when prices are higher.

Need Design Advice?

Need help determining if a dual-string system is right for you? Contact our team or browse compatible inverters and battery modules to build the ideal setup.

FAQs

Q: Can I use the Series Box without a BMU?
A: No, the Series Box must be used alongside a compatible SolaX BMU to function.

Q: What’s the maximum capacity I can achieve?
A: Up to 10 x TP-HS36 modules, giving 36kWh of total usable storage.