In 2.5 years, it stopped working properly. It doesn't charge correctly and even though it shows full on the charger, it doesn't produce any power in the machine. It may work correctly for up to 2 years if you take care of it, but beyond that, it's a matter of luck.

My Honda CB600F Hornet had it from its previous owner, and on the little screen that counts its operating days, it has exceeded 3 years and so far it works perfectly without any problems.

I have had it for about 2 years. I have bought 2 of this particular one. One for the scooter (125cc) and one for the motorcycle (1000cc).
For scooters and motorcycles with lower energy requirements, it will perform well. After 2 years, it still works fine. However, for the motorcycle that requires more power in CCA, it started giving me trouble from the first winter. I had to charge it every day when the motorcycle was not in use for a week. The same thing happened during the second winter, and this year, in the third winter, it completely failed. :p.

edit: Both stores where I purchased them no longer carry them because they had many issues and received many returns, according to them. Let the wise understand.