While most ebike companies these days show battery ratings in watt-hours, many electric scooter companies still stick to volts and amp-hours. Worry not, my friend.

When you plug your battery in before your next ride, you should avoid charging it to 100%. Lithium ion batteries degrade over time. The longer they stay charged to a higher voltage, that ...

Your next e-bike or robot vacuum might not have a lithium-ion battery. The ubiquitous batteries have problems—they’re slow to charge, wear out quickly, and sometimes lead to catastrophic fires.