9 
4 Battery history disappearing after battery dies with new battery
After replacing my old battery with an iFixit kit battery, when my battery goes low enough in charge for the MacBook to go to sleep, sometimes the battery history in settings will completely reset. Is this normal behavior?
Update (08/22/25)
Here's an album with what CoconutBattery shows, the macOS settings's battery tab, and system information's battery tab: https://imgur.com/a/TpgLevK.
Update (08/28/25)
@danj https://imgur.com/a/s37FK3B with an ambient temperature of 25ºC.
Update (08/30/25)
@danj https://imgur.com/a/7bz5Hxw with an ambient temperature of 23ºC.
I don't really see much of a difference in my opinion, other than the severely degraded battery health. It perhaps runs a little cooler (1-3 degrees) than the replacement battery but I haven't extensively monitored it, and the battery isn't permanently adhered to the chassis so that will probably affect some thermal transfer.
crwdns2934109:0crwdne2934109:0
974 
@lonegamer - The reason I had asked was to see why you needed to replace the battery in the first place. The cycle count is way high! Within 3.5 years you have used 1231 cycles basically burning 350 cycles per year. The average for even heavy users is about ~120
So you are either running some heavy Apps or this system has an inherent problem draining the battery. Here we are lucky to catch the load as the charger is not connected with a load of 18 Watts and your first post is only 10 Watts so I'm leaning to something more than a web browser running are you online game playing? If you are you need to stay tethered to your charger not running of Battery as the power load is too great for your usage.
As for the Battery temp as you charge or discharge the battery heats up! When it's in either state the system needs a chance to breathe when the it's deeply discharged trying to recover as well as not running hard that the input power is no sooner put into the battery to be immediately used.
(cont)
crwdns2934271:0crwdnd2934271:0 Dan crwdne2934271:0
Think of it this way a boat that is Sinking with a hole that is letting 10 gallons of water in needs to have more than 10 gallons of water pumped out other wise you're not out running the sinking of the boat.
Laptops no matter who's are in the same boat! Otherwise the heat buildup within the battery degrades it over time. The more often it's over the thermal threshold the shorter the batteries lifespan
Bottom line you need to change your habits a bit and if being untethered is a requirement then you need to look at portable battery's to supplement your power needs.
You could see if a fresh battery is better but without better power management I think you'll just fall back into the same state.
crwdns2934271:0crwdnd2934271:0 Dan crwdne2934271:0