Flex 24V Battery Compatibility Guide
Updated: June 15, 2026 | Garage Almanac
The Short Answer
All Flex 24V batteries fit all Flex 24V tools.
| Platform | Flex 24V |
|---|---|
| Nominal voltage | 24V (24V) |
| Cell format | 6x 21700 (stacked lithium) |
| Introduced | 2020 |
| Charges with | Flex 24V chargers |
| Official info | Flex batteries & chargers |
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The Flex 24V is a 24V platform introduced in 2020, built around a 6x 21700 (stacked lithium) cell pack. All Flex 24V batteries fit all Flex 24V tools.
Legacy & cross-generation: Flex (US/Chervon, sold at Lowe’s) is a separate platform from the German Flex brand and from Skil PWR Core (also Chervon).
Worth knowing: 24V nominal is a ‘max’ figure (~21.6V real).
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