SAV Storage Elf L1-5

Storage Elf L1-5 — the entry size

The Storage Elf L1-5 is the smallest of the four configurations: 80 kWh of capacity and 40 kW of rated power in an air-cooled all-in-one cabinet that occupies roughly 1.2 m².

It suits businesses deploying storage for the first time — trades, smaller production sites, agriculture, hospitality. The purpose is usually well defined: shift a PV surplus into the evening, or absorb a recurring load peak. The entry size often covers either case and ties up less capital than a system that would not be fully used for years.

Within the series the L1-5 has one peculiarity: relative to its rated power it allows the highest short-term overload, because the same 100 kW inverter works against the smallest battery. For sites with short, high load peaks but modest overall energy demand, the smallest variant can therefore be the right one.

About the designation

SAV lists the 80 kWh variant without a model designation of its own. “L1-5” follows the manufacturer’s model key, which names the series after the number of battery packs — five packs of 16 kWh each. We confirm the designation at the time of ordering.

The series at a glance

Variant	Capacity	Rated on-grid power	Battery voltage	Weight
L1-5 (this page)	80 kWh	40 kW	224–292 V	≤ 1,270 kg
L1-6	96 kWh	48 kW	269–350 V	≤ 1,380 kg
L1-7	112 kWh	56 kW	314–409 V	≤ 1,490 kg
L1-8	128 kWh	64 kW	358–467 V	≤ 1,600 kg

All four variants share the same cabinet, the same footprint and the same 100 kW inverter. They differ solely in the number of battery packs — each pack contributes 16 kWh and 8 kW.

Where the L1-5 is not the right choice: if consumption or the PV array is likely to grow substantially over the next few years, moving up to the L1-6 or L1-7 is usually the cheaper decision — floor space, foundation and grid connection are identical across all four variants.

Configuration options

Two functions of the series depend on configuration and are not part of every delivery:

• Direct PV integration — the MPPT input for up to 70 kW of DC-coupled PV is listed as an option in the manufacturer’s datasheet. Below 438 V of string voltage the input operates with derating.
• Grid/island transfer (STS) — the backup power function is likewise listed as an option in the datasheet, while the manufacturer’s website describes it as a standard function.

We clarify both with the manufacturer before quoting. Either way, backup power is not a product feature but a project. Grid disconnection, protection equipment, load allocation, inrush currents and bridging time are assessed for each site.