Guru
Joined: 11/02/2018
Location: AustraliaPosts: 3278
| Posted: 12:10am 30 May 2024 |
The first step is to measure the DC volts. I think some newer boosters may use a 5V IC instead of transistors, so a 6V SLA may be better for them.
It might be possible to use each amps internal supply to maintain the SLA battery.
If the voltage is high enough use a regulator set to 13.5V (or 6.7V) to charge it.
If not use a diode / capacitor voltage doubler to feed the regulator. There are also tiny DC/DC boost regulator modules on AE.
The amp DC current in the ones I have worked on has been from 30mA to 80mA.
Edited 2024-05-30 10:15 by phil99