# ICR26650-5000-F Rechargeable battery

**URL:** <https://forum.digikey.com/t/icr26650-5000-f-rechargeable-battery/64902>\
**Category:** Q&A\
**Created:** [February 2, 2026, 5:18am UTC](https://forum.digikey.com/t/icr26650-5000-f-rechargeable-battery/64902 "2026-02-02T05:18:39Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Engineer\_Ed](https://avatars.discourse-cdn.com/v4/letter/e/ed655f/32.png) [@Engineer\_Ed](https://forum.digikey.com/u/Engineer_Ed)\
**Post date:** [February 2, 2026, 5:18am UTC](https://forum.digikey.com/t/icr26650-5000-f-rechargeable-battery/64902/1 "2026-02-02T05:18:39Z")

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Do these rechargeable batteries [ICR26650-5000-F](https://www.digikey.com/en/products/detail/pkcell/ICR26650-5000-F/11629983) have an internal battery management system (BMS) or are they unprotected? As you may know, protected cells include a small internal electronic circuit board (BMS) to prevent dangerous conditions like over-charging. Unprotected cells are typically used by professionals building tool battery packs with their own external BMS. This is important since my battery pack build already has a BMS. I look forward to your reply, Kind regards Ed

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**Author:** ![Karl\_1696](https://avatars.discourse-cdn.com/v4/letter/k/9de0a6/32.png) [@Karl\_1696](https://forum.digikey.com/u/Karl_1696)\
**Post date:** [February 2, 2026, 4:02pm UTC](https://forum.digikey.com/t/icr26650-5000-f-rechargeable-battery/64902/2 "2026-02-02T16:02:15Z")

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Hello,

The data sheet and the manufacturer’s website do not say anything about any protection of any kind.