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Property, Plant, and Equipment
12 Months Ended
Dec. 31, 2025
Property, Plant, and Equipment  
Property, Plant, and Equipment

Note 3 – Property, Plant, and Equipment

Property, plant, and equipment are summarized as follows:

December 31, 

2025

  ​ ​ ​

2024

Production equipment

$

43,203

$

41,750

Laboratory equipment

15,287

12,611

Leasehold improvements

 

73,369

 

73,114

Furniture and computer equipment

 

4,711

 

4,298

Construction in progress

 

6,858

 

5,141

Total cost

 

143,428

 

136,914

Accumulated depreciation

 

(57,110)

 

(39,706)

Net property, plant and equipment

$

86,318

$

97,208

Depreciation expenses for dedicated laboratory equipment and production equipment are charged to research and development. Depreciation expense related to office equipment, leasehold improvements, software and computer equipment are allocated between research and development and selling, general and administrative expenses based on the nature of use.

Depreciation expenses related to property, plant, and equipment are summarized as follows:

December 31, 

2025

  ​ ​ ​

2024

  ​ ​ ​

Depreciation expense

$

18,400

$

16,449

In 2025, the Company was designing a continuous electrolyte production pilot line. As of December 31, 2025, detailed design for the line was substantially complete, and the Company expects the line to be commissioned by the end of 2026. In 2025, the

Company also expanded the capabilities of the electrolyte innovation center (the “EIC”) and the cell safety abuse lab. Construction in progress related to property, plant and equipment is summarized as follows:

  ​ ​ ​

December 31, 

Construction in progress

 

2025

  ​ ​ ​

2024

Continuous electrolyte pilot manufacturing line

$

5,214

$

1,194

Cell safety abuse lab

94

835

EIC

111

1,292

Other capital projects

1,439

1,820

Total construction in progress

$

6,858

$

5,141