LiFePO4 Solplanet

Solplanet: SMA heritage in safe LiFePO4 chemistry

The Solplanet brand: engineering from the former SMA team

Solplanet is a solar equipment brand officially founded in 2019 in Shanghai by the team that previously ran the Chinese division of German inverter manufacturer SMA Solar Technology — one of the most experienced players in the inverter industry. That heritage explains why Solplanet's engineering approach targets European quality and certification standards, rather than just a low price point typical of some other Chinese manufacturers that entered the market more recently.

The Ai-LB and ASW5120-LB lines at 5 and 10 kWh

In the "LiFePO4" category, Solplanet is represented by seven storage system models across two lines: Ai-LB (Ai-LB 5K, Ai-LB 10K, Ai-LB Pro 5K and Ai-LB Pro 10K) and ASW5120-LB (E and G3 versions, at 5 and 10 kWh capacity). The two parallel lines reflect product evolution: the ASW5120-LB series is the earlier platform generation, while Ai-LB is the newer development with improved specs, designed for integration with the current ASW hybrid inverter line-up.

LiFePO4 (lithium iron phosphate) chemistry, underlying every model in the Solplanet line, is substantially safer than traditional lithium-ion batteries under overheating or mechanical damage due to its resistance to thermal runaway. For a system placed inside a living space or a private home's garage, that safety margin has direct practical value, not just theoretical significance on a manufacturer's spec sheet.

LiFePO4 chemistry, the Pro version and built-in BMS

The Pro version in the Ai-LB line differs from the base model not just in capacity but in an expanded set of protective functions and more precise cell-state monitoring through its built-in BMS — that matters for owners planning intensive daily system use, not just occasional backup power during rare grid outages. The price gap between the base and Pro versions is usually much smaller than the gap in practical reliability under daily cyclic load.

Every Solplanet storage module includes a built-in battery management module (BMS) that balances charge across internal cells, protects against overcharge and deep discharge, and sends diagnostic data to the brand's monitoring platform. That removes the need to separately buy or configure a protection system — it's already integrated into every storage module, and BMS firmware updates happen remotely without physical intervention in the system.

Form factor, service life, compatibility and how to choose

The Solplanet form factor is built for wall mounting in a utility room or garage, with a compact footprint that doesn't require a dedicated room for the energy system — unlike traditional lead-acid battery systems, which at equivalent capacity need far more space due to greater weight and bulk.

Solplanet system charge-discharge cycle life is measured in thousands of full cycles before capacity drops below an acceptable level, which under daily use means a service life comparable to the rated lifespan of the hybrid inverter itself. That's worth factoring into a budget: the storage unit won't become the system's "weak link" needing replacement ahead of the rest of the equipment.

Choosing between the Ai-LB and ASW5120-LB lines, and between 5 or 10 kWh capacity within each, should be coordinated with the specific Solplanet inverter model you plan to integrate with: the manufacturer optimizes each storage platform for a particular hybrid inverter line, and a mismatch can limit monitoring functionality or the data exchange protocol between devices. Consulting a dealer or installer at the equipment-selection stage avoids this mistake before purchase.

Compare line, capacity, form factor and compatibility with your existing or planned inverter across the Solplanet models in the catalogue below, and pick a LiFePO4 storage system that delivers safe, long-lasting autonomy for your home for years to come, without the risk of incompatibility with the rest of your equipment.