From my research i now find it is just a matter of mounting a battery and running leads through an isolation switch to the setec power supply. This is pre cabled and fitted with asnz mains plug ready for connection to internal gpo.

Caravanning Blog Setec St35 Iii Power Unit How To Survive
Setec st20 11 wiring diagram. Page 1 st ii series power supplies user instructions introduction these instructions detail the installation and operation requirements for the st20 ii st35 ii power supplies. Up 115v and 117v for subsequent reconnection with and without mains respectively the lvd will connect the battery and allow float charging at 10a15a st20 iist35 ii. Installation is to be carried out only by suitably qualified personnel. The battery will be charging at 08a when the battery voltage is below the low voltage disconnect 105v for the first power up 115v and 117v for subsequent reconnections with and without mains respectively the lvd will connect the battery and allow float charging at 10a15a st20st35. During our last trip our power supply failed in the pop top. Provide a minimum of 80mm clearance above and below the unit.
The host equipment must ensure that access to the unit other than the front panel by the user is prevented. Ensure that the connection to the mains supply is in accordance with the national wiring rules and. St series power supplies user instructions page 3 of 7 issue f installation host equipment. Ive also got a 160 watt solar panel. Current awg mm2 0 10 a 18 10 10 20 a 14 30 20 30 a 10 55 st ii series power supplies user instructions wiring up mains. We purchased a setec st20 11 20 amp power supply to replace it which has an inbuilt regulator and 5 amp output battery charger.
The battery is hooked up to terminals vbatt and vbatt shown in the user manual the link to which is below. The trickle charge feature is provided to allow very flat batteries to be charged at a rate which will extend their life. Product manuals for bmpro product range including battery chargers battery monitors electric brake controllers battery management systems and accessories. These have been designed for operation in rvs providing a dc power system with optional battery back up. After quite a few years of ownership ive finally got a battery to hook up to the setec st20 power manager in our camper trailer. Page 2 the power supply is a four stage battery charger with boost vboost 1405v float vfloat 13.