Korea's rumplear lands strategic investment from Wireable to scale LFP battery output
What's the deal? South Korean battery maker rumplearDealroom has a profile for this one. Try Dealroom → has raised early-stage equity from telecom infrastructure firm WireableDealroom has a profile for this one. Try Dealroom →, the company said on August 24. The two struck a strategic partnership on August 20 to jointly pursue energy storage system (ESS) projects built on lithium iron phosphate (LFP) battery cells. Neither the investment amount nor the equity stake was disclosed.
What's the endgame? Founded in 2019, rumplear runs a 100MWh annual prismatic battery line at its plant in Hwaseong, Gyeonggi Province, capable of producing about 150,000 cells a year. It designs everything in-house — from electrodes to cells, modules, and packs — tailoring specifications to each customer.
The company now wants to lift that plant's capacity to GWh scale, centred on prismatic LFP cells with some drone battery lines. To fund the expansion, rumplear is separately raising a 100 billion won Series B.
How the partnership works: rumplear will supply LFP cells, modules, and packs, while Wireable brings the nationwide build-out and maintenance network it developed in telecom infrastructure. Wireable plans to extend into ESS manufacturing, construction, and maintenance using that reach.
rumplear is also targeting industrial batteries for construction equipment, farm machinery, and forklifts. It supplies 340Ah prismatic LFP cells for ESS and 230Ah cells for heavy equipment, betting on custom cells in a market dominated by Chinese products.
The signal: Korea's battery makers have long trailed China in LFP, a chemistry now central to ESS and industrial power. "We will accelerate entry into the large-scale ESS market and commercialisation," a rumplear representative said (translated from Korean), pointing to a homegrown push to close that gap.
Read more: thelec.kr
Image credit: Generated with Gemini
