Could you clarify how you arrived at 84% battery health? After the command "ioreg -l -n AppleSmartBattery -r" I see DesignCapacity, but where does the other number (5629) come from? I'd like to compute battery health myself...
ioreg -l -n AppleSmartBattery -r | grep -i capacity
"MaxCapacity" = 8329
"CurrentCapacity" = 8002
"DesignCapacity" = 8440
100 / DesignCapacity * MaxCapacity
MaxCapacity / DesignCapacity * 100
98.68%
echo $(ioreg -l -n AppleSmartBattery -r | grep MaxCapacity | awk '{print $3}') / $(ioreg -l -n AppleSmartBattery -r | grep DesignCapacity | awk '{print $3}') \* 100 | bc -l ioreg -l -n AppleSmartBattery -r | awk '/MaxCapacity/{mc=$3};/DesignCapacity/{dc=$3};END{print 100*mc/dc}'After reading this thread I try to keep my battery at a 50-80% charge :)
Except when I do some CPU intensive stuff like compiling or rendering, then it is being charged thought the process.