I have a Dynamix UPS1000 which has performed well for over 4 years. Lately, not so well and I suspect the batteries are well overdue for a replacement.
I see replacement batteries (12V 7A) go for about $35 and I would need 2 of them ($70).
Does anyone have any experience of these and know:
1. How easy is it to change these batteries - is it something a novice can do, or would I need an electrician?
2. Whether it's worth just replacing the batteries, or whether I should go for something else (ie a different UPS model)?