Reading the tecnical specification for the honeywell Accenta compact it says its maximum battery size is 2.1 A/h. As 2.1 A/h are getting harder to find, (ie they are now 2.2 or 2.3 A/h) is the size critical or is there a slight tolerance?

Reading the tecnical specification for the honeywell Accenta compact it says its maximum battery size is 2.1 A/h. As 2.1 A/h are getting harder to find, (ie they are now 2.2 or 2.3 A/h) is the size critical or is there a slight tolerance?

 

The restriction on battery size on this panel and the optima is due to the physical size restriction as its a 'compact' enclosure. The charging circuit is capreble of using a bigger battery but this will not fit in the case. Any 1.9-2.4 A/h battery should have the same physical dimensions and so will fit.