question

renz avatar image
renz asked

Help with MPPT SmartSolar #39 Input shutdown due to battery over-voltage when connected to DC Power Supply

Image screenshot here https://photos.app.goo.gl/pQbGShgg3Jn73MGc7 (photo would not upload)

This error is occurring ONLY when connecting MPPT to a 12v single or string.

Using MPPT charger to perform distribution tests on parallel wiring.

Power source is 48v bridge rectifier, error reiterates with 24v 1500w switch mode.

https://photos.app.goo.gl/XdVvGocPdCMyo16n9

Battery voltage is indeed switched to 12v, error reiterates with another AGM battery in the exact same way. No error with 24v or 36v strings, MPPT starts bulk immediately.

Have also tried with another MPPT out of the box, same problem.

Battery voltage is 11.50v

Thank you

MPPT ControllerserrorvoltageAGM Battery
2 |3000

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

0 Answers