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Battery blog
Answers to common questions about 18650 and 21700 lithium-ion cells: ratings, charging, pack building and where the technology is heading. Each number comes with its condition and its source.
What is an 18650 battery? Size, voltage and capacity explained
An 18650 is a lithium-ion cell 18 mm across and 65 mm long. What its voltage, capacity and current ratings mean, with data-sheet examples.
Amprius (Wuxi): Power Bank Fires and CCC Suspensions
Explore the Amprius (Wuxi) power bank recalls, reported fires and CCC certificate suspensions—and what the findings mean for battery buyers.
