CALB LFP Battery Defects Affect 210,000 Vehicles, GAC's De-CATL Strategy Questioned
Miles Bennett
CALB's lithium iron phosphate cells are swelling and leaking electrolyte across more than 210,000 GAC Aion ride-hailing vehicles — and CALB was the supplier GAC chose specifically to break free from CATL, turning a quality crisis into a stress test for the entire industry's supplier-diversification playbook.
What exactly went wrong with the batteries?
The failures center on 177 Ah LFP cells: swelling, electrolyte leakage, insulation breakdown, and sharp range loss.
Affected vehicles typically have 150,000–300,000 km on the odometer — right at the warranty boundary for ride-hailing and taxi fleets that run around the clock.
This means → the cells did not fail out of the box. Defects surfaced only after three to five years of intense charge-discharge cycling — the hardest kind of flaw to catch early, and the truest test of manufacturing consistency.
Why did GAC want to move away from CATL in the first place?
Around 2020 GAC Group chairman Zeng Qinghong said publicly that automakers felt they were "working for CATL" — a blunt admission of how little bargaining power carmakers had in the battery supply chain.
GAC Aion then elevated CALB (中航锂电) from a secondary supplier to its primary cell source, at one point channeling over 70% of cell procurement through CALB. It also brought in Sunwoda and Envision AESC as additional second-tier suppliers.
In plain terms = GAC did not want one battery maker to hold it hostage, so it brought a roster of backups onto the field — and CALB was the biggest backup of all.
Is the compensation package enough?
GAC Aion and CALB have offered a package but have not announced a recall: battery warranty extended from 150,000 km to 8 years or 300,000 km; free inspection, repair, and cell replacement; additional subsidies if repairs take more than five days.
This means → the extended warranty and free swaps are substantial on paper, but "no recall" means owners must bring the car in themselves — for ride-hailing drivers still on the road, the real barrier is lost driving time.
How far along is GAC's own battery venture?
In 2022 GAC invested RMB 10.9 billion to set up Inpat Battery (因湃电池), building its own cell production line. Inpat cells are already shipping in the Aion Y and other models.
Revenue from GAC once accounted for nearly 30% of CALB's total sales — Inpat's ramp-up is directly diverting that order flow.
This reflects a deeper truth: the real endgame of GAC's de-CATL strategy was never switching to another supplier — it was making its own batteries. CALB was the bridge, not the destination.
What does this mean for the broader industry?
Supply-chain sources say the crisis exposes systemic risk in an EV supply chain that has been squeezing costs to the limit — battery packs are long-cycle products, and subtle manufacturing flaws can take years to surface.
This is one reason Western, Japanese, and Korean automakers have moved more cautiously on electrification: not because the technology is out of reach, but because the quality-validation cycle has been compressed too far.
In plain terms = this incident will not make the industry abandon the push to diversify battery suppliers, but it will force everyone to re-weigh a single question — do the procurement savings cover the cost when things go wrong?
Content is for reference only, not financial advice.