Chosen Solution

Would you rather have a battery that is ~3500 mAh but lasts for 2000 cycles, or a ~4000 mAh battery that lasts for 500 cycles

500 mAh difference isnt more than much of a day’s difference. It would be less batteries to buy if you had the one that lasted for 2000 cycles. An external power bank can be had for less than $20 and can charge the phone for more than a week. Since it is generic, it has more than 500 cycles usually.