The battery is too fast to replace

Instead of continuing to operate with reduced capacity, the UPS unbearable noise when the battery no longer has a satisfactory capacity. So we must quickly replace the battery. On my 2 inverters of this model, the battery did not last more than 2 years.

For my oldest inverter (entry, with only 3 shots), the battery lasted over 15 years, albeit with a capacity that was very weak towards the end but it was enough for my Freebox!

So, I do not redeem the offline APC UPS, and I do not recommend it. Also, this inverter is huge, I do not understand why it is so big, knowing that the battery is inside is quite small in comparison ...