Both Xpeng and Nio – Chinese EV manufacturers with some deliveries overseas – have delivered more spectacular results for their latest quarters, but not everyone believes every word they say. Nio’s numbers have been under scrutiny since June, when short seller Grizzly Research issued a report suggesting that Nio’s partnership with Weineng in China, a company set up at arms-length from Nio, to establish battery subscription sales, which is responsible for quite a lot of battery shipments. Grizzly suggested that revenues had been artificially inflated by between 10% and 95% by Weineng in what it described as a Valeant-esque accounting swindle whereby Nio ships its spare batteries out to Weineng every Quarter. It said that Weineng’s disclosure of 19,000 battery…