# Why Different Batteries

**URL:** <https://forum.reekon.tools/t/why-different-batteries/2792>\
**Category:** Feature Requests & Ideas\
**Created:** [December 7, 2025, 3:41am UTC](https://forum.reekon.tools/t/why-different-batteries/2792 "2025-12-07T03:41:04Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Woodnick54](https://avatars.discourse-cdn.com/v4/letter/w/5daacb/32.png) [@Woodnick54](https://forum.reekon.tools/u/Woodnick54)\
**Post date:** [December 7, 2025, 3:41am UTC](https://forum.reekon.tools/t/why-different-batteries/2792/1 "2025-12-07T03:41:04Z")

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Is there a logical reason why you didn’t use the same rechargeable battery from the T1 in the M1?

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**Author:** ![therock](https://yyz1.discourse-cdn.com/flex029/user_avatar/forum.reekon.tools/therock/32/9_2.png) [@therock](https://forum.reekon.tools/u/therock)\
**Post date:** [December 7, 2025, 3:43pm UTC](https://forum.reekon.tools/t/why-different-batteries/2792/2 "2025-12-07T15:43:51Z")

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Hey Nick, the M1 was developed before the T1 and 2 AA batteries are smaller than the b1 form.