SLA is sealed lead acid -- mine were 2 92 ah agm group 27 batteries purchased in November; I got half their value, which was a decent price rather than keeping them in my garage forever.
Her trailer has a Zamp connector for her solar panels. https://www.amazon.com/ZAMP-SOLAR-ZS-SOLARPORT-Waterproof-Solar/dp/B07GNMPZZG
Her panels are the harbor freight ones; and they have this plug https://www.amazon.com/dp/B07TFSS78H. Check the polarity if you use this. I'm not all that impressed with those connectors, but they could be perfectly fine. It's also the same connector the trickle charger uses.
It looks like the new Airstreams use Zamp too. For my AS, i ran two 10 AWG solar wires from the positive of the battery and negative from the shunt in the cabin into the battery box thru the old battery sleeve. They have MC4 connectors on the end to attach to my panels. So, I open the battery box, pull them out and connect... i can take photos tomorrow.
I also have made an MC4 to Anderson Connector adapter that I have been thinking about using on the end because it is a little easier to connect and disconnect than the MC4 connectors. I used the 50 amp Hyclat version of the Anderson connectors https://www.amazon.com/gp/product/B07H4LRJYV
Her trailer has a Zamp connector for her solar panels. https://www.amazon.com/ZAMP-SOLAR-ZS-SOLARPORT-Waterproof-Solar/dp/B07GNMPZZG
Her panels are the harbor freight ones; and they have this plug https://www.amazon.com/dp/B07TFSS78H. Check the polarity if you use this. I'm not all that impressed with those connectors, but they could be perfectly fine. It's also the same connector the trickle charger uses.
It looks like the new Airstreams use Zamp too. For my AS, i ran two 10 AWG solar wires from the positive of the battery and negative from the shunt in the cabin into the battery box thru the old battery sleeve. They have MC4 connectors on the end to attach to my panels. So, I open the battery box, pull them out and connect... i can take photos tomorrow.
I also have made an MC4 to Anderson Connector adapter that I have been thinking about using on the end because it is a little easier to connect and disconnect than the MC4 connectors. I used the 50 amp Hyclat version of the Anderson connectors https://www.amazon.com/gp/product/B07H4LRJYV