I personally use Samsung 50S and RS50. The RS50 or 50XG are the optimal choice in my opinion.
I did the same replacements two weeks ago, it took about a week for the battery to recalibrate, definitely am seeing the improvements now.
I got the Note 9 the same day as my buddy did. I was very careful about slow charging from 50% to 60% (overkill, I know) and he was not careful. His phone crapped out after 2 years but I used mine for 4 years until I decided it was getting slow.
Maybe they’ve finally fixed the Doze mode they promised? Because, from what I can tell, my battery never improved after they released One UI 7. I’ve had this phone for two years, and the battery always dropped quickly - even when it was just sitting idle. But today, for the first time since I got the device, I unplugged it in the morning and still had 50% remaining by midnight.
I do exactly the same tasks and mine don't drain that horribly. For me the battery drains quickly while watching movies and gaming only.
I would say the battery use on my S9+ is between 12-15% per hour, depending on the use scenario. Quite close to you, it seems.
It is a bit worse than I expected (coming from a Galaxy Tab s5e, which had unreal battery for its age), but everything is super fast, so not bothered too much with it. And the battery is still better than on my laptop, so it is quite useful when talking about some note-taking, e-mails and browsing tasks outside of home.
I noticed that some activities and apps (e.g., note-taking on Samsung Notes) take more battery than I hoped, but it is what it is.
Edit: Forgot to add, settings are maxed out, 120hz, bluetooth on, S Pen used constantly and charged from tablet, etc.
Looks like I'm getting a battery replacement. Very disappointed in Samsung this year.
It was a P.O.S. Panasonic battery that is known to die prematurely. Only had 28k miles on the car when it died and had to get it replaced.
im on my second tablet a9 the first wouldnt charge after a update now its not charging again this model has problems with thiere batterys
They use some crap Panasonic battery.
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If choosing battery across many manufacturers, check the part ranking. If your choice is down to two brands, the PartReview part comparisons help.
We compare battery across these categories:
In March 2026 on PartReview, battery Panasonic were overall better than SAMSUNG.
Battery Panasonic and SAMSUNG were equally popular according to data in March 2026.
By vote balance, battery Panasonic surpassed SAMSUNG:
By number of reviews, battery SAMSUNG surpassed Panasonic:
In March 2026, according to PartReview, battery Panasonic led more car-specific ratings than SAMSUNG:
Panasonic are chosen by owners of cars such as: Toyota 4runner, and others.
Battery SAMSUNG have not yet taken leading positions in car-specific ratings. You can help by adding a review and specifying your car.
If this comparison didn’t fully answer your question, there are many others on PartReview.
For example, comparisons of battery Panasonic with: OPTIMA, Varta, Bosch, OEM Subaru, OEM Volkswagen, YUASA, Tesla, Duralast, Exide, OEM BMW.
Also available: comparisons of battery SAMSUNG with: OPTIMA, Varta, Bosch, OEM Subaru, OEM Volkswagen, YUASA, Tesla, Duralast, Exide, OEM BMW.
You can also see who is better among other battery manufacturers: OPTIMA or Varta, OPTIMA or Bosch, OPTIMA or OEM Subaru, OPTIMA or OEM Volkswagen, OPTIMA or YUASA.
