Originally Posted by sofaspud
But anyhow, I think if it were me I would just install a jack on the amp back panel and not worry about having it inside the chassis.
There is a plethora of SLA charging ICs, with the best choice coming down to your own feature & cost reqiurements.
This is the point I also regarded before
I have 2 options then: 1) Something like the Duracell above named or 2) a separate chassis with SMPS and IC unit.
Do you know a simple method (I know it is not as simple as it sounds) to sign a battery status with an LED light ? (green-orange-red).
Thanks for your help