Extending battery Capacity during long Power outages

[Medtech1 <michy.miu@xxxxxxxxx>]

Does anyone know of potential issues extending battery capacity on a security alarm system by just added a cabinet, and running 4 x 8amp/hr batteries in parallel instead of the typical single 7amp/hr battery.

The charge circuit on a security system would be limited to a maximum charge current, but all I can see for issues are:

1) Longer to charge after a discharge
2) batteries should be same age, amp/hr to reduce changes of overcharging
3) ??

Some comments I've seen from people is they thought more batteries could overload the charging cct.. but, battery charges would have a maximum output amperage... (take alot longer to recharge) so I don't understand how that would occur..

This must be a common thing to do in places where storms are common and they need the alarm system to have backup power (non-generator) for a day or two?

Thanks!
Michelle