The Tenz Energy ECO-314L-(ST) is a lithium-ion battery with 51.2V nominal voltage, 314Ah capacity, and 16.0768kWh nominal energy per unit.

It is designed for integration into a larger energy storage system, with CAN and RS485 communication and support for up to 16 battery units connected in parallel.

For off-grid installers, the key decision is not simply how much battery capacity to purchase.

It is how to match storage capacity to the site's energy demand, available installation space, and power conversion equipment.

The ECO-314L-(ST) measures 890.5 × 420 × 267mm and weighs 120kg ± 3kg. Its installation location should be selected with the equipment's weight, handling requirements, and future access in mind.

For a residential off-grid system, a dedicated indoor service area may be suitable if the floor can support the unit and the environment meets the battery's requirements. The model has an IP20 rating and is not specified as weatherproof, so direct outdoor installation should not be assumed suitable.

Temperature also matters at remote sites. The specified ambient range is 0–40°C during charging and −20–40°C during discharging, with 10–30°C recommended for optimal operation. Projects with substantial temperature fluctuations should assess the actual installation environment before equipment selection.

The specification does not identify this model as wall-mounted and does not authorize stacking. Installation arrangements should therefore be based on the documented product design rather than assumptions drawn from other battery models.

An off-grid battery must operate within the electrical limits of the selected inverter. The ECO-314L-(ST) has an operating voltage range of 43.2–58.4V, a standard charge/discharge current of 100A, and a maximum charge/discharge current of 200A at 25 ± 2°C.

The maximum current rating does not mean every inverter can use the full current in all operating conditions. The system designer should verify the inverter's voltage range, current settings, protection requirements, and battery communication protocol.

CAN and RS485 interfaces are provided, but the specification does not identify specific compatible inverter models. Confirm compatibility with the relevant equipment supplier before finalizing the system.

The battery's BMS provides monitoring and protection functions, including cell-voltage monitoring, temperature sensing, cell balancing, and current limiting. These functions form part of battery management and do not replace the electrical protection required for the complete installation.

Technical Specifications

The stated cycle life is based on testing at 25°C, 100A charge/discharge current, and 70% depth of discharge (DOD). Actual results depend on operating conditions.

Frequently Asked Questions

 

 

01.How much nominal energy does one battery provide?

One ECO-314L-(ST) provides 16.0768kWh of nominal energy. Usable energy depends on the system's operating settings and conversion losses.

02.Can the battery support a larger off-grid installation?

The specification permits up to 16 units in parallel. The final configuration must account for inverter capability, electrical protection, cabling, and the site's energy requirements. Series connection and mixing this model with other battery brands or models are not permitted by the specification.

03.How long can it power a property without solar generation?

Runtime cannot be determined from battery capacity alone. An estimate requires the site's energy consumption, required reserve, usable battery energy, and system efficiency.

04.Can it be installed outdoors?

The IP20 rating does not establish weatherproof protection. The battery should not be treated as suitable for direct exposure to outdoor conditions.

05.Which inverter should be used?

The inverter must support the battery's operating voltage and required communication protocol. Specific inverter compatibility should be confirmed before purchase.

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