Power Station Enclosure for Your Batteries and Inverter

Example: a 2 kW station built from 21700 cells

A project requested by a customer, November 2026: a 7S14P battery of 21700 cells (24 V, 260 × 160 × 80 mm, 7 kg), a 24 → 220 V 2 kW inverter (320 × 150 × 70 mm) and a BMS board. An enclosure styled like factory-made stations — 362 × 312 × 216 mm: the battery at the bottom, the inverter on a shelf above it, a display, a button, USB and two sockets at the front, grilles for 80 mm fans and handles in the sides.

An enclosure like this is larger than the print bed (256 × 256 mm), so it is made of 12 parts — four each for the body, the shelf and the lid — bolted together with M4 bolts through internal flanges. All parts print without supports, with 4 mm walls. You buy the M4 bolts and nuts yourself.

How to make the enclosure cheaper

• Start with a draft enclosure with 0.84 mm walls and windows: the same 12 parts in 18 hours of printing, to check that everything fits.
• Thinner walls (3 mm) with stiffening ribs — about a quarter less plastic; we’ll give the exact figure after slicing.
• A hybrid enclosure: we print only the corners, the front panel for sockets and the display, the handles and grilles, and the walls are plywood or plastic sheet. That is 0.6–0.8 kg of PETG instead of 2.7 kg.

Safety

• PETG holds its shape up to about 70 °C, but it burns. For a battery of several kilowatt-hours we recommend a metal tray, and an air gap between the battery and the inverter.
• The inverter gets hottest under load: it needs fans and grilles for air in and out.
• The enclosure protects against knocks, dust and touch, but it does not replace a BMS, a fuse and the right wire gauge.
• We print only the enclosure and plastic parts. The batteries, BMS, inverter and assembly are yours.

What to send for a quote

• The dimensions and weight of the battery, inverter, BMS and boards.
• What goes on the panel: sockets, USB, a display, buttons, charging inlets.
• How to arrange it all: a layout with dimensions or a photo of a cardboard mock-up.
• The model, if you have one — STL or STEP.

No file? We’ll tell you where to find a ready-made model (Printables, Thingiverse, MakerWorld) or model it ourselves from a drawing or exact dimensions; modelling is charged separately. Smaller enclosures for power banks and UPS units are on the power bank, UPS and battery enclosures page.

How to order

Send your model in STL, OBJ, STEP or 3MF format through the request form or a messenger and tell us the colour you want — we’ll quote the price and lead time within an hour. We print from your ready-made model. No file? We’ll tell you where to find a ready-made model (Printables, Thingiverse, MakerWorld) or model it ourselves from a drawing or exact dimensions; modelling is charged separately.

The minimum order is 250 UAH. If you need several identical stations, we print the parts as a batch — we’ll discuss the per-unit price separately. We ship finished parts by Nova Poshta anywhere in Ukraine on the day printing is finished. More about rates on the 3D printing prices page.