Battery producer LG Chem has launched a recall of a few of its RESU10H residential battery merchandise within the curiosity of fireside security.
The recall impacts sure battery methods containing cells from particular tons produced in 2017 and 2018, based on a letter from Peter Gibson, who leads LG Chem’s North American power storage enterprise. The letter, dated November 29, explains that these cells are prone to overheating, which may result in fires and harmful smoke.
“LG Chem has acquired 5 experiences of thermal occasions in the US inflicting restricted property injury,” the letter notes. “There have been no reported accidents. LG Chem is enterprise this voluntary motion as a part of its continued dedication to product security and to offering the very best high quality and repair to its clients.”
Prospects with one of many affected models will get a free alternative containing “state-of-the-art” cells manufactured in 2020. LG Chem didn’t reply to request for remark by the point of publication.
The RESU has been a distinguished participant within the small however rising house power storage market, which simply notched its sixth consecutive quarterly set up file. It has been a central element of photo voltaic installer Sunrun’s buildout of solar-plus-storage, which reached 13,000 houses as of November. The RESU was additionally accessible via distributors akin to CED Greentech and BayWa r.e.
The recall impacts roughly 5 % of Sunrun’s BrightBox battery installations, spokesperson Wyatt Semanek famous in an e mail.
“We’ve got already began proactively changing batteries impacted by the recall and have credited clients for the temporary downtime,” he famous. “House photo voltaic and battery methods which can be correctly designed, put in, and maintained have a protracted observe file of system security.”
Batteries include dangers, however the recall reveals the worth of selecting a provider that may stand by its guarantee, mentioned Barry Cinnamon, whose firm Cinnamon Vitality Programs has put in LG Chem batteries with SolarEdge inverters since 2017. A few of these models are on the recall record, however “we have had zero issues” with them up to now, he mentioned.
“I discover it attention-grabbing and relieving that an organization like LG Chem would step as much as the plate and say, ‘There is a potential downside, we will tackle that downside, and we’re not going to run away or disguise,'” Cinnamon informed Greentech Media.
That method contrasts to much less respected suppliers within the photo voltaic or inverter enterprise that folded up store when their tools had issues, he added.
Coping with lithium-ion battery fireplace dangers
This isn’t the primary time LG Chem has been within the information for recollects involving its battery cells.
In latest weeks, automakers GM and Hyundai every recalled roughly 70,000 electrical automobiles that contained LG Chem batteries, after a number of of these vehicles caught fireplace. The precise explanation for these fires is underneath investigation.
LG Chem additionally equipped the utility-scale McMicken battery in Arizona, which entered thermal runaway and exploded in April 2019, injuring 4 firefighters. An investigation by mission proprietor Arizona Public Service concluded that cell failure kicked off the chain of occasions that led to the explosion. Inadequate fireplace suppression and lack of air flow for explosive gases within the battery enclosure exacerbated the incident.
LG Chem revealed its personal investigation into the foundation trigger, difficult the cell failure conclusion and suggesting exterior causes kicked off thermal runaway.
The storage trade has already improved security protocols for the reason that McMicken period. LG Chem subsequently gained the arrogance of developer LS Energy to provide the biggest grid battery on the planet, the Gateway mission in San Diego County.
Many technologists consider that extra could possibly be finished to enhance battery security forward of the anticipated inflow of electrical vehicles and grid storage units. Startup Cadenza Innovation lately put in a brand new lithium-ion supercell expertise in New York that’s designed to thwart fires within the occasion of cell failure.