Hello Zach B，

Thanks for writing in.

Did you try to check  the actual output voltage and current? And how is it when connect other load?

If possible, would you like to show us the connection?  You can upload pictre here or share a link or send it to service@droking.com.

Please don’t worry, we will find solution for you once confirm the problem.

Best regards.

Hello Matt Langenbach,

If  battery type is not progaram correctly, percentage reading is also not correct. You can refer to this instruction

https://images-na.ssl-images-amazon.com/images/I/B1Z5kTp++9S.pdf

And what kind of 48-volt connector it is?  If possible, would you like to take some images to show how it is and connection?

Best regards.

Hello David Leech，

Both of two items can dispaly negative current and voltage.

Bes regards.

Hello Muhammad Suri,

Do you mean input 24vDC? This item only accept DC voltage between DC110-370V

Best regards.

Hello Authur，

Is it this item? https://www.amazon.com/dp/B077S4VDGB/ref=as_li_tl?tag=proeng-20

F0,F1,F2 is not for setting battery specification.

Please kindly notice you need to hold the K- button then connect power supply. After than, it will show battery code. Here is instruction.

https://images-na.ssl-images-amazon.com/images/I/71XAPeuORsL.pdf

For any more questions, please let us know.

Best regards.

Hello Jason，

Thanks for writing in. If you have any question, please kindly let us know.

Best regards.

Hello Stein，

Our AC meter can only work for signle-phase circuit.

Best regards.

Hello David Cederbaum,

We have uploaded pdf manual on Amazon product page, please feel free to download it. Here is the link,

https://images-na.ssl-images-amazon.com/images/I/C1RCvx6bFMS.pdf

Best regards.