China's "zero-COVID" policy means restrictions to limit infections are still in place, hobbling factory activity and disrupting supply chains.

Electric vehicle batteries can use lithium carbonate or lithium hydroxide, but the industry typically talks of lithium carbonate equivalent (LCE) which contains both.

Spot prices for lithium carbonate used in batteries in China were at $68,850 per tonne on May 11, according to Benchmark Mineral Intelligence, down from a record $79,550 in March.

Prices have more than doubled since the start of 2022.

"These very strict lockdowns in China have meant that many electric vehicle plants have ceased production, which in turn has reduced near term demand (for lithium)," said Benchmark Mineral Intelligence analyst Daisy Jennings-Grey.

She added supply was "still very tight and demand is robust".

(Graphic: Lithium prices from Benchmark, https://fingfx.thomsonreuters.com/gfx/ce/zgvomemywvd/lithiumBMI.JPG)

A surge in electric vehicle sales after previous lockdowns were lifted saw a scramble to secure battery raw materials which boosted prices.

But with lockdowns, some producers of battery materials in China have slashed production by 15-40%, reducing demand for materials such as lithium, state-backed research house Antaike said.

Consultancy Rho Motion has trimmed its 2022 electric vehicle sales forecast for China to 5.6 million units from 5.8 million previously. Globally about 10.3 million electric vehicles will be sold this year, it predicted.

(Graphic: EV sales, https://fingfx.thomsonreuters.com/gfx/ce/lgpdwemjbvo/ev%20demand%20rho.JPG)

Benchmark estimates demand for lithium carbonate equivalent at 685,000 tonnes this year, up from 545,000 tonnes last year, and a deficit of 80,000 tonne from a shortfall of 65,000 tonne in 2021.

Bank of America analysts raised their average price for lithium carbonate for this year by 34.2% to $75,829 per tonne, saying prices would be resilient despite higher production in Australia.

Large structural deficits will start to appear from 2030 onwards when demand for renewable energy vehicles surpasses 30% of overall sales, Wood Mackenzie analyst Gavin Montgomery said.

A supply response caused by higher prices will not be enough to plug those gaps, he said.

(Graphic: Lithium price graphic, https://fingfx.thomsonreuters.com/gfx/ce/byprjdomnpe/lithiumbalanceMay.JPG)

(Reporting by Zandi Shabalala Editing by Pratima Desai and Mark Potter)

By Zandi Shabalala