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r/batteryguru

Incorrect battery health value
▲ 5 r/batteryguru

Incorrect battery health value

Hello, it seems like the battery health isn't updating correctly. As you can see in the graph, the values are around 95%, with the lowest being 94%, but the overall value is still showing 92%.

I had two previous sessions at 92% (these were the first sessions I had), and I decided to delete them because they seemed to be outliers compared to the values I'm getting now. But even if we include those sessions, the overall value shouldn't be 92%.

u/Alfok_ — 3 days ago
▲ 3 r/batteryguru+1 crossposts

Battery life normal for realme gt 7t??

Can someone please tell me if this battery life is normal? I only charge till 80%. This seems too low for a phone having 7000mah

u/DarkLord__7 — 4 days ago
▲ 8 r/batteryguru

Why now only fully charging is validating to batt. health?

Why now, after last update, only fully charging is validating to batt. health?

Previously at least 60% loading was enough.

As we know continous fully charging is not good for battery.

Could You restore this feature?

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u/ufnalufi — 5 days ago
▲ 3 r/batteryguru+2 crossposts

Battery drainage

Hi. I just bought a new iPhone 17 pro max 2 days ago, and I feel that the battery isn’t as good as expected. Therefore, I’m wondering if these numbers are normal, or is the battery draining faster than usual?

Also, sharing some tips to help maintain your battery would be great.

​

u/Misty-Sway — 5 days ago
▲ 1 r/batteryguru

Battery Temp warning.

Hi y'all.

Did the devs move up the high battery temp level to 40°C? I swear it used to be a lot lower.

I'd appreciate this

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u/rekadura — 7 days ago
▲ 3 r/batteryguru+2 crossposts

I built a small Li-ion battery calculator — looking for feedback

I made a simple web-based calculator for quickly checking DIY Li-ion battery configurations.

You can enter:

  • Nominal voltage
  • Battery capacity (Ah)
  • Cell configuration (e.g. 14s8p, 13s6p)

It calculates:

  • Energy capacity (Wh)
  • Capacity of an individual cell
  • Cell voltage
  • Minimum and maximum pack voltage
  • Estimated runtime at 1000 W

It also supports English and Russian.

I built it from scratch using vanilla HTML, CSS and JavaScript and deployed it with Vercel.

I'd really appreciate feedback on the calculations and suggestions for useful features I could add.

Live demo: https://batterycalculator.vercel.app/
Source code: https://github.com/Suzixx/BatteryCalculator

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u/FireBoy_YT — 9 days ago
▲ 0 r/batteryguru

New battery replacement sitting on 85% health, is this normal?

I had my S23 battery replaced last week at a repair shop, but AccuBattery and Battery Guru both measure its health at 85% (about 3,300 of 3,900 mAh) across several full charge cycles.

Is that normal for a freshly fitted genuine battery, or would you expect better? It's a Samsung S23 so I don't know whether replacement batteries degrade over time or whether I've just had some second-hand battery put in instead.

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u/yoshi105 — 9 days ago
▲ 0 r/batteryguru+1 crossposts

Lost 2% battery health in a span of a week. (From 100% to 98%)

So I got 17 pro max in January this year, and didn't use it much for the first two months. But then used it for like 5-7 hrs a day. Like a 2-3 ago I checked battery health, it was 100% and only close to 80 cycle count. I checked again like a week ago, the battery went to 99% , and today it is 98% . The cycle counts are only 91.

And I always use it between 20% to 80%, rarely it has reached below 20%. Never below 10%. I don't use it when it's too hot . Still How is this happening.

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u/Motor_Button9088 — 13 days ago