so, the electronics after the 500 cycles will throw the programmed obsolescence shit? even tough the battery is still function correctly?
The "1"/2/3DS/i/Lite/XL/knuckles don't actually even have a cycle counter (or any charge level measurement system apart from measuring the voltage - while otherwise rudimentary, this method means it's not significantly fooled by varying 100% capacities and doesn't need "monthly calibration"), and the electronics in the battery itself are just voltage/current safety cutoffs*;
but a cycle is by definition "charging the battery by 100%", regardless of how many parts/sessions you take to add 100 times 1%
The "cycle" logic is fallacious in the first place, as time since manufacturing, time spent at certain charge levels (ideal storage is at roughly 40%, keeping in mind self discharge - definitely not full and not empty), charging pattern (voltage/current output by the console), charging pattern (the highest and lowest percentage ranges are the most stressful), and cell brand/quality are other significant factors too!
* Look carefully near the contacts of your O3DS/O2DS/WiiU Pro Controller (or most later Nokia phones) battery: there's a sticker you can remove to find 2 small round pins, these are direct connections bypassing all the safeties, if you really dare to revive that 0 volt overdischarged thing you found in a New Mexico landfill in 2050...
On the topic of percentage, remember that the official battery meter is (estimating, due to the above reason, and) displaying
a very misleading value - that 4-segment icon is not made of 25% each!