Samsung managed to incrementally increase the battery capacity of the 44 mm Galaxy Watch4 compared to its predecessor, but that wasn’t the case for the 40 mm model. A certification by Safety Korea shows that both sizes are getting upgraded in the next generation.
It will be an incremental upgrade again, week-long battery endurance still isn’t possible for full-fledged smartwatches.
The Samsung Galaxy Watch5 40 mm (EB-BR900ABY) will have a 276 mAh battery, up from 247 mAh (+29 mAh). The larger Watch5 44 mm (EB-BR910ABY) will have a 397 mAh battery, up from 361 mAh (+36 mAh).
Samsung Galaxy Watch5 batteries: 247 mAh for the 40 mm model • 397 mAh for the 44 mm model
Note that this is for the vanilla watch and we’re not 100% sure about the sizes (e.g. the Watch3 had a 45 mm version, not 44 mm). We haven’t seen other versions of the Watch5 be certified either.
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