Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020
Revenue
Revenue	$ 56,121	$ 34,957	$ 96,631	$ 67,733
Cost of revenue
Cost of revenue	45,344	25,929	76,637	50,941
Gross profit	10,777	9,028	19,994	16,792
Operating expenses
Research and development	40,410	17,126	65,784	35,152
Sales and marketing	21,923	10,966	37,897	25,167
General and administrative	22,732	4,466	37,199	9,555
Total operating expenses	85,065	32,558	140,880	69,874
Loss from operations	(74,288)	(23,530)	(120,886)	(53,082)
Interest income	25	37	47	280
Interest expense		(793)	(1,499)	(1,628)
Change in fair value of redeemable convertible preferred stock warrant liability		(11,516)	9,237	(10,981)
Change in fair value of common stock warrant liabilities	(10,421)		33,340	(10,981)
Change in fair value of contingent earnout liability			84,420
Transaction costs expensed			(7,031)
Other (expense) income, net	(189)	563	(174)	131
Net loss before income taxes	(84,873)	(35,239)	(2,546)	(65,280)
Provision for income taxes	65	48	103	105
Net loss	(84,938)	(35,287)	(2,649)	(65,385)
Accretion of beneficial conversion feature of redeemable convertible preferred stock	0	(58,625)	0	(58,625)
Cumulative dividends on redeemable convertible preferred stock	0		(4,292)
Deemed dividends attributable to vested option holders	0		(51,855)
Deemed dividends attributable to common stock warrant holders	0		(110,635)
Net loss attributable to common stockholders - Basic	(84,938)	(93,912)	(169,431)	(124,010)
Gain attributable to earnout shares issued	0		(84,420)
Change in fair value of dilutive warrants	(7,427)		(53,540)
Net loss attributable to common stockholders - Diluted	$ (92,365)	$ (93,912)	$ (307,391)	$ (124,010)
Weighted average shares outstanding - Basic	312,227,526	13,468,677	266,197,482	12,822,481
Weighted average shares outstanding - Diluted	313,602,100	13,468,677	275,577,000	12,822,481
Net loss per share - Basic	$ (0.27)	$ (6.97)	$ (0.64)	$ (9.67)
Net loss per share - Diluted	$ (0.29)	$ (6.97)	$ (1.12)	$ (9.67)
Networked charging systems [Member]
Revenue
Revenue	$ 40,874	$ 21,368	$ 67,674	$ 41,025
Cost of revenue
Cost of revenue	35,384	20,408	59,126	39,024
Subscriptions [Member]
Revenue
Revenue	12,082	9,811	22,906	18,815
Cost of revenue
Cost of revenue	7,830	4,452	13,470	9,225
Other [Member]
Revenue
Revenue	3,165	3,778	6,051	7,893
Cost of revenue
Cost of revenue	$ 2,130	$ 1,069	$ 4,041	$ 2,692