Onan Opus?

[ajgibb2002]

Hi guys,
Can anyone educate me about the Onan Opus converters I have on my SP?
I can't find a thing about them on the internet or in searching on the
BB forums. According to the data plate the output is 12 volts. There
is an asterisk note to the effect that there is 1 (one) amp "available"
for battery charging. According to my BB book there are two 45 amp
chargers but a charger has to have greater than 12 volts output and to
charge a big battery bank more than one amp would be needed. So what
do I have, DC power supplys or battery chargers?

Austin Gibbons
'91 SP