12V 3000W Pure Sine Wave Inverter with UPS Backup
Sold by Renogy UK
From £113.99across the range: £113.99 – £259.99
Renogy UK's price when we last checked, on 2 September 2026. They run promotions and price by variant, so confirm the current price on their page before you buy.
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Overview
12V 3000W Pure Sine Wave Inverter with UPS Backup
3,000W continuous, 6,000W surge, UPS transfer under 50ms. The largest of the PUH series — for a build running an induction hob, a microwave and a kettle, where you want to stop thinking about what you can switch on. Also sold as 2,000W and 1,000W.
- 3,000W continuous, 6,000W surge
- Pure sine wave, 50Hz ±0.3
- Transfers to mains in under 50ms
- 90% maximum efficiency
- Low-voltage shutdown at 10V
- 6.4kg, 482 × 220 × 92mm
Make sure the battery can feed it
3,000W at 12V is around 270A of continuous DC draw. That is more than several lithium packs in this catalogue will deliver — check your battery's maximum continuous discharge before ordering, because the inverter will happily ask for more than the BMS will give and the result is a shutdown mid-brew. A 200Ah Core or Pro pack rated at 200A is the sensible minimum companion.
And the cable
At 270A the battery cable is genuinely heavy — think 50mm² over a short run — and the fuse has to match. This is the point where an inverter install stops being a DIY afternoon and starts needing proper lugs, a crimper and a Class T fuse.
Before you order
Static current is 1.5A, about 18W standing. Working range is 0°C to 40°C, so it belongs inside the heated space with air around it. Have the 230V side certified by a qualified electrician.
Renogy's published figures
Taken from Renogy's own specification for this product, on the date shown by the price. Anything wired into 230V mains should be signed off by a qualified electrician.
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