This allows Mirattery to establish a direct financing channel in the Chinese interbank market, providing a boost to the further development of its BaaS service system, it said.

's (NYSE: NIO, HKG: 9866) battery asset management joint venture, Wuhan Weineng, or Mirattery, has successfully issued RMB 400 million ($62.62 million) in ABNs (Asset-backed Medium-term Notes) in China's interbank market, the company announced today.

This is the first green battery asset ABN in China, and the proceeds will be used primarily for Mirattery's battery asset business, according to the company.

The issue size of the senior tranche, which will mature on May 20, 2024, is RMB 390 million, with a debt rating of AAAsf and an issue rate of 3.12 percent, according to the company.

For issuers of such assets, lower interest rates mean lower costs. Mirattery's cost on this ABN offering was 23 basis points higher than the 2.89 percent coupon rate on the senior ABN issued by Nio's finance and leasing subsidiary early last month.

For reference, the benchmark one-year loan prime rate (LPR) in China in March was 3.7 percent.

The successful issuance of the ABN is an attempt by Mirattery to raise funds in the interbank market in China, the company said, adding that it completes its establishment of direct financing channels in the interbank market and provides for the further development of its BaaS (Battery as a Service) service system.

Mirattery was established on August 18, 2020, with a registered capital of RMB 800 million, with joint investment from , Nio, Guotai Junan and Hubei Science Technology Investment.

In August 2020, Nio launched its BaaS battery leasing business and Mirattery is the manager of the battery assets.

The BaaS business allows users to purchase an Nio vehicle without buying the battery, thereby reducing the cost of the vehicle at the time of purchase by at least RMB 70,000. But instead of the owner owning the battery, Mirattery will hold the ownership to the battery.

On December 15 last year, Mirattery said it had more than 4 GWh of battery assets under management, 100 times the 0.04 GWh it had in September 2020, the company's second month of existence.

In the press release announcing the ABN offering today, Mirattery said it has more than 6 GWh of battery assets under management.

Mirattery continues to diversify its capital market operations as it successfully explores debt financing sources, including ABNs, the company said.

Mirattery's move comes after similar financings in China's interbank market by Nio and Motors (NYSE: XPEV, HKG: 9868).

On October 29 last year, Nio announced that its financial leasing subsidiary, Nio Financial Leasing Co Ltd, had successfully issued an ABS (Asset-backed securities) for NEV leasing on the Shanghai Stock Exchange, marking the EV maker's entry into the Chinese capital market.

It is also the first ABS for carbon-neutral projects in China, with a total size of RMB 1.03 billion and a maturity date of 2023.

On March 3 this year, Nio announced that Nio Financial Leasing Co Ltd successfully issued RMB 1.03 billion ABN in China's interbank market.

On February 22, Xpeng's subsidiary, Guangzhou Xiaopeng Automotive Financing Lease Co Ltd, issued an RMB 775 million ABS on the Shenzhen Stock Exchange.