US-Spec vs EU-Spec All-in-One Storage: Voltage, Power, and Labels

Both at 16kWh, the US model is 7.2kW with split-phase 120V/220V output while the EU model is 6kW with a different voltage scheme. Export also requires UN3480 dangerous goods labelling, and a 32kWh unit at 220kg ships in a crate braced with plywood.

Export customers ask the same question often: if both units are rated 16kWh, why are the US and EU models different? This video was shot in the burn-in area, and it also covers export labelling and packing.

What the burn-in area does

Batteries are cycling here, split into zones: portable units in one area, large packs in another. Two burn-in cabinets are dedicated to small and mid-size batteries.

Units that finish cycling move to a holding area and wait for packing. Burn-in is the last gate before shipment, and only cycled units enter this area.

Export labelling is mandatory

Products shipped overseas must carry the required dangerous goods label, commonly UN3480.

Lithium batteries are Class 9 dangerous goods, so this is not optional. With labels missing, customs or the carrier can reject the shipment and it sits at port. This is easy to overlook at quotation stage, and who pays demurrage when it happens is best written into the contract up front.

US-spec all-in-one units

Two configurations:

• Smaller: 3.6kW, 7.68kWh
• Larger: 7.2kW, 16kWh

On voltage, the US model supports split-phase output, delivering both 120V and 220V. That reflects US residential distribution, where dryers and air conditioners run on 220V while general sockets are 120V.

EU-spec all-in-one unit

This unit, with the yellow panel, is 6kW with 16kWh.

**The key difference from US spec**: at the same 16kWh, the US model reaches 7.2kW while the EU model is 6kW. The voltage arrangement also differs, since the US unit runs split-phase 120/220V and the EU unit does not.

So these two are not interchangeable. Specify according to the destination grid standard rather than shipping by energy rating alone.

How packing works

Units ship in wooden crates braced on all four sides with plywood.

The unit being packed here is a 32kWh battery weighing 220kg, which counts as heavy equipment. At that weight, if the crate bracing is not done properly, transport shock transfers straight into the cells and welded joints.

Three things to confirm when specifying

What is the destination voltage standard? US and EU spec are not interchangeable.

How much power does your load need? The same energy rating comes with different power ratings, and that decides which appliances run.

Who handles dangerous goods labelling and customs documents? Undefined responsibility here causes more disputes than anything else.

Where this gets uncertain

Lithium labelling requirements change by country, so check the current version against the destination's latest rules. Heavy equipment transport also depends on the discharge facilities at the destination port, and not every port can handle a single 220kg piece.

FAQ

• Can a US-spec unit be used in Europe?
  No. The voltage schemes differ: the US model supports split-phase 120V and 220V output, while the EU model uses a different arrangement. Using one in the other's market risks appliance mismatch or damage. Select by the destination grid standard.
• What labels are required when exporting storage batteries?
  Lithium batteries are Class 9 dangerous goods, and exports must carry the correct dangerous goods label, commonly UN3480. Missing labels lead to rejection by customs or the carrier, and the shipment sits at port.

Want the factory walkthrough video or a quote? Contact us with your application and our engineers will spec a system.