I currently (!) have about 7 hours of battery backup in my alarm panel. I have had a quote from my alarm provider to extend this to 40 hours by the addition of a couple more batteries and a new 3A charger. Sounds too easy? They want £280 +VAT to do the job - nice work if you can get it!
Presumably I can buy a couple of high quality batteries (Yuasa?) and a suitable charger and do it myself? Anyone done this? Any issues? Hints and tips?
(I need a new charger because the one I have at the moment is only 1A - so they say) Thanks