3D printer: how much battery you need
3D printer (FDM) draws about 120 W (60–250 W range), runs 70% of the time and uses 504 Wh per day. Start-up surge: 300 W.
Heated bed dominates: 200+ W while heating, 60–100 W printing. Outage mid-print ruins the part — a station as a UPS is the real use case.
Battery needed
| Hours | Wh | Battery (Wh) | Inverter (W) |
|---|---|---|---|
| For 8 hours | 168 | 255 | 132 / 300 |
| For 24 hours | 504 | 764 | 132 / 300 |
| For 72 hours | 1512 | 2291 | 132 / 300 |
Open in calculator with this appliance →
Stations that fit (24 h)
Shop links are affiliate links: if you buy, we earn a small commission at no cost to you. Picks are based on your numbers, not on commission.
FAQ
How many watts does a 3D printer (FDM) use?
Typically 120 W while running, with a range of 60–250 W depending on model and age. Start-up surge can reach 300 W.
How long will a 1000 Wh power station run a 3D printer (FDM)?
About 7.9 hours on the clock, allowing for the 70% duty cycle, inverter losses and a 20% reserve.
What size power station do I need for a 3D printer (FDM) overnight (8 h)?
About 255 Wh of battery and an inverter rated at least 132 W continuous with 300 W surge.
Can I run a 3D printer (FDM) on solar during an outage?
You need roughly 336 W of panels in winter to replace a day's use (504 Wh), charging through a station with a big enough MPPT input.
Other appliances
Inverter efficiency 88%, usable depth of discharge 90%, reserve 20%. Full method: How we calculate. source