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Property Plant and Equipment (Details) - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Jun. 30, 2025
Sep. 30, 2024
Statement [Line Items]    
[Property, plant and equipment, gross carrying amount of fully depreciated assets still in use] Balance beginning $ 13,753 $ 13,159
Additions during the year 2,414 665
Gross carrying amount Exchange differences 3 62
[Property, plant and equipment, gross carrying amount of fully depreciated assets still in use] Balance ending 16,170 13,886
[Depreciation and impairment Balance at beginning] (3,856) (2,763)
Depreciation and impairment Additions (1,033) (1,189)
Depreciation and impairment Exchange differences 46 45
[Depreciation and impairment Balance at ending] (4,843) (3,907)
Property, plant and equipment (note 9) 11,327 9,979
[Property, plant and equipment, gross carrying amount of fully depreciated assets still in use] Balance ending   13,753
Land And Buildings [Member]    
Statement [Line Items]    
[Property, plant and equipment, gross carrying amount of fully depreciated assets still in use] Balance beginning 7,700 7,700
Additions during the year 0 0
Gross carrying amount Exchange differences 0 0
[Depreciation and impairment Balance at beginning] (793) (419)
Depreciation and impairment Additions (281) (374)
Depreciation and impairment Exchange differences 0 0
[Depreciation and impairment Balance at ending] (1,074) 793
Property, plant and equipment (note 9) 6,626 6,907
[Property, plant and equipment, gross carrying amount of fully depreciated assets still in use] Balance ending 7,700 7,700
Right of use Asset [Member]    
Statement [Line Items]    
[Property, plant and equipment, gross carrying amount of fully depreciated assets still in use] Balance beginning 3,202 3,197
Additions during the year 0 0
Gross carrying amount Exchange differences (24) 6
[Property, plant and equipment, gross carrying amount of fully depreciated assets still in use] Balance ending 3,178 3,203
[Depreciation and impairment Balance at beginning] (1,583) (1,127)
Depreciation and impairment Additions (338) (454)
Depreciation and impairment Exchange differences 11 (3)
[Depreciation and impairment Balance at ending] (1,910) (1,584)
Property, plant and equipment (note 9) 1,268 1,619
[Property, plant and equipment, gross carrying amount of fully depreciated assets still in use] Balance ending   3,202
Leasehold Improvements [Member]    
Statement [Line Items]    
[Property, plant and equipment, gross carrying amount of fully depreciated assets still in use] Balance beginning 76 76
Additions during the year 261 0
Gross carrying amount Exchange differences 0 0
[Depreciation and impairment Balance at beginning] (48) (33)
Depreciation and impairment Additions (17) (15)
Depreciation and impairment Exchange differences 0 0
[Depreciation and impairment Balance at ending] (65) (48)
Property, plant and equipment (note 9) 272 28
[Property, plant and equipment, gross carrying amount of fully depreciated assets still in use] Balance ending 337 76
Production Equipment [Member]    
Statement [Line Items]    
[Property, plant and equipment, gross carrying amount of fully depreciated assets still in use] Balance beginning 1,808 1,712
Additions during the year 880 94
Gross carrying amount Exchange differences (13) 3
[Property, plant and equipment, gross carrying amount of fully depreciated assets still in use] Balance ending 2,675 1,809
[Depreciation and impairment Balance at beginning] (1,193) (970)
Depreciation and impairment Additions (215) (221)
Depreciation and impairment Exchange differences 9 (3)
[Depreciation and impairment Balance at ending] (1,399) (1,194)
Property, plant and equipment (note 9) 1,276 615
[Property, plant and equipment, gross carrying amount of fully depreciated assets still in use] Balance ending   1,808
Office Furniture And Equipment [Member]    
Statement [Line Items]    
[Property, plant and equipment, gross carrying amount of fully depreciated assets still in use] Balance beginning 105 73
Additions during the year 10 31
Gross carrying amount Exchange differences 0 1
[Depreciation and impairment Balance at beginning] (71) (60)
Depreciation and impairment Additions (17) (11)
Depreciation and impairment Exchange differences   (1)
[Depreciation and impairment Balance at ending] (88) (72)
Property, plant and equipment (note 9) 27 33
[Property, plant and equipment, gross carrying amount of fully depreciated assets still in use] Balance ending 115 105
Capital Work In Progress [Member]    
Statement [Line Items]    
Additions during the year 670  
Property, plant and equipment (note 9) 670  
[Property, plant and equipment, gross carrying amount of fully depreciated assets still in use] Balance ending 670  
Battery Technology [Member]    
Statement [Line Items]    
[Property, plant and equipment, gross carrying amount of fully depreciated assets still in use] Balance beginning 862 401
Additions during the year 593 540
Gross carrying amount Exchange differences 40 52
[Property, plant and equipment, gross carrying amount of fully depreciated assets still in use] Balance ending 1,495 993
[Depreciation and impairment Balance at beginning] (168) (154)
Depreciation and impairment Additions (165) (114)
Depreciation and impairment Exchange differences 26 52
[Depreciation and impairment Balance at ending] (307) (216)
Property, plant and equipment (note 9) $ 1,188 777
[Property, plant and equipment, gross carrying amount of fully depreciated assets still in use] Balance ending   $ 862