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I think I may have found a five pin plug that will fit the battery discharge port. (See two attached images.) Does anyone have experience using this adapter on a Rad battery? BTW - I now see that the polarity is clearly indicated on the Rad battery. I am leaning towards this type of solution...

I think what I am looking for is called a discharge connector - one specific to the Rad battery. Would be willing to build my own if I could find the correct components!

Thanks. I thought about the USB A port too - would like to make something like that which sits right on the battery itself.

I am thinking 12 vdc

This is quite awesome!

Thanks. That was my concern. Is the BMS in a Rad battery in the battery itself, or in the controller?

So I can draw current back through the charging port? I already built those connectors for charging with the Luna. Here I was thinking that I had to connect to the leads on the bottom of the battery. Would I still need the 48v to 12v converter - or something else to regulate the rate of...

Wow! Thank you for all the great replies! This addresses my two main concerns: battery maintenance in the winter and using the battery in an emergency. I am using a Luna charger, so I am able to charge at low amps to a desired level - that should help with "winter maintenance" charging. Now...

Hi! Checked the forums but have not found definitive answers. Is it possible to repurpose a standard Rad 48v battery as an emergency power source? Think here of charging a phone or powering a small device. If so, how? Details appreciated. Has anyone done this? Thanks!