Longi MC4 system auction prices

As of 6 November 2026, hammerhistory.com has recorded 8 auction sales of the Longi MC4 system with a published hammer price, closed between 16 September 2026 and 12 October 2026, on 2 auction sites in 1 country. One sale is free to read: a Longi MC4 system sold for EUR 25 on 16 September 2026.

Known on 2 auction sites 8 sold with a price 0 at auction now 8 seen at auction

All sales 8

Sold	Built	Hours	Auction house	Place	Photos	Hammer price
2026-09-16 Longi - MC4 - set of 20 extension cables (58 cm) for solar panels	unknown	unknown	vavato.com	Boxmeer, NL	7	EUR 25 FREE
2026-10-12 Longi - MC4 - set of 20 extension cables (58 cm) for solar panels	unknown	unknown	surplex.com	Boxmeer, NL	7	EUR 50 FREE
2026-10-12 Longi - MC4 - set of 20 extension cables (58 cm) for solar panels	unknown	unknown	surplex.com	Boxmeer, NL	7	EUR 50 FREE
2026-10-12 Longi - MC4 - set of 20 extension cables (58 cm) for solar panels	unknown	unknown	surplex.com	Boxmeer, NL	7	EUR 50 FREE
2026-09-22 Longi - MC4 - set of 20 extension cables (58 cm) for solar panels	unknown	unknown	surplex.com	Boxmeer, NL	7	EUR 20 FREE
2026-09-22 Longi - MC4 - set of 20 extension cables (58 cm) for solar panels	unknown	unknown	surplex.com	Boxmeer, NL	7	EUR 25 FREE
2026-09-16 Longi - MC4 - set of 20 extension cables (58 cm) for solar panels	unknown	unknown	vavato.com	Boxmeer, NL	7	EUR 25 FREE
2026-09-16 Longi - MC4 - set of 20 extension cables (58 cm) for solar panels	unknown	unknown	vavato.com	Boxmeer, NL	7	EUR 20 FREE

Click a sale to see that system with its photos and details. A hammer price under EUR 100 is free to read.

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Longi MC4

Solar and battery storage

MC4 is the universal connector standard used for joining solar panels and extension cables in photovoltaic installations. It is not a specific product of LONGi but a connector type adopted industry wide, allowing panels, cables and inverters from different manufacturers to be linked safely. These connectors are rated for outdoor use and carry the direct current from panels to the rest of the system.

We recognise this model across the auction sites and keep every one we see together.

On a used one

Check that connector pairs are genuine matching MC4 types rather than mixed with incompatible clones, and inspect for cracking, discolouration or water ingress which can indicate age or poor sealing.

About Longi

Longi is a Chinese manufacturer of solar photovoltaic products, based in Xian, China, and recognised as one of the largest producers of monocrystalline silicon wafers and solar modules worldwide. The company supplies panels for residential, commercial and utility scale installations and is known for its efficiency focused monocrystalline technology.

Founded 2000 · Xian, China

All Longi models

8sold with a price

0at auction now

2auction sites

1countries

sold, price lockedfree to read

Questions about Longi MC4 auction prices

How many Longi MC4 auction sales are on record?

8 sales with a published hammer price, closed between 16 September 2026 and 12 October 2026, on 2 auction sites in 1 country. 0 more closed without a sale.

Is a Longi MC4 at auction now?

Not at the moment. The lots of this model that come to auction appear on this page while they are open, and every sale that closes with a price is added to the table.

Are the Longi MC4 hammer prices free to read?

The oldest sale of every model is free to read, and so is every hammer price under the site's floor. Every other hammer price opens with an account, one sale at a time.

Hammer prices are what the auction house recorded when the lot closed, before the buyer's premium, in the currency of the sale. A sale listed on a house's own site and on its platform counts once. Doubt a figure? Open the sale and its listing is linked there. How prices are recorded.