Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2021	Oct. 31, 2020
Revenue
Total revenue	$ 65,034	$ 36,365	$ 161,665	$ 104,098
Cost of revenue
Total cost of revenue	48,978	29,112	125,615	80,053
Gross profit	16,056	7,253	36,050	24,045
Operating expenses
Research and development	36,751	18,919	102,535	54,071
Sales and marketing	24,361	12,134	62,258	37,301
General and administrative	20,268	8,790	57,467	18,345
Total operating expenses	81,380	39,843	222,260	109,717
Loss from operations	(65,324)	(32,590)	(186,210)	(85,672)
Interest income	25	18	72	298
Interest expense	(3)	(815)	(1,502)	(2,443)
Change in fair value of contingent earnout liability	0	0	84,420	0
Transaction costs expensed	0	0	(7,031)	0
Other (expense) income, net	(2,025)	(85)	(2,200)	46
Net loss before income taxes	(69,756)	(40,792)	(72,303)	(106,072)
Provision for (benefit from) income taxes	(314)	98	(211)	203
Net loss	(69,442)	(40,890)	(72,092)	(106,275)
Accretion of beneficial conversion feature of redeemable convertible preferred stock	0	(1,752)	0	(60,377)
Cumulative dividends on redeemable convertible preferred stock	0	(3,960)	(4,292)	(3,960)
Deemed dividends attributable to vested option holders	0	0	(51,855)	0
Deemed dividends attributable to common stock warrant holders	0	0	(110,635)	0
Net loss attributable to common stockholders - Basic	(69,442)	(46,602)	(238,874)	(170,612)
Gain attributable to earnout shares issued	0	0	(84,420)	0
Change in fair value of dilutive warrants	0	0	(51,106)	0
Net loss attributable to common stockholders - Diluted	$ (69,442)	$ (46,602)	$ (374,400)	$ (170,612)
Weighted average shares outstanding - Basic (in shares)	325,034,920	14,990,866	286,025,483	13,550,552
Weighted average shares outstanding - Diluted (in shares)	325,034,920	14,990,866	292,575,318	13,550,552
Net loss per share - Basic (USD per share)	$ (0.21)	$ (3.11)	$ (0.84)	$ (12.59)
Net loss per share - Diluted (USD per share)	$ (0.21)	$ (3.11)	$ (1.28)	$ (12.59)
Redeemable convertible preferred stock warrant liability
Operating expenses
Change in fair value of warrant liabilities	$ 0	$ (7,320)	$ 9,237	$ (18,301)
Common Stock Warrant Liability
Operating expenses
Change in fair value of warrant liabilities	(2,429)	0	30,911	0
Networked charging systems
Revenue
Total revenue	47,511	22,566	115,185	63,591
Cost of revenue
Total cost of revenue	38,720	22,382	97,846	61,406
Subscriptions
Revenue
Total revenue	13,397	10,782	36,303	29,597
Cost of revenue
Total cost of revenue	7,637	5,322	21,107	14,547
Other
Revenue
Total revenue	4,126	3,017	10,177	10,910
Cost of revenue
Total cost of revenue	$ 2,621	$ 1,408	$ 6,662	$ 4,100