fromElectric Bike Reviews, News, & Testing
3 months agoBicycling
How We Test Electric Bikes
Range Test measures real-world e-bike distance per charge via two tests: highest PAS and lowest useful PAS, recording distance, speed, elevation, and time.
Last month, my colleague Liz Lopatto explained how a gummy bear battery bank was taking over the ultralight backpacking world. I'm talking full-grown, outdoorsy adults nerding out about gummy bear merch beating the battery pros at their own game! Liz and I quickly agreed: We should put it to the test. Could the gummy bear company truly have the best ultralight battery, and could I bring some hard data to prove it?
For The Verge's exclusive tour of these secretive labs, I watch researchers peer at cell chemistries down to the atomistic level, using electron microscopes. Others work at a larger scale, all the way up to the Megashaker. Inside a cavernous hall, an enormous sliding test chamber envelops one of GM's double-stacked, 205-kilowatt-hour battery packs - the type that powers hulking models like the Cadillac Escalade IQ.