question

garryhydro avatar image
garryhydro asked

mppt 75/10 stops charging

I have 100 watt panel connected to a mppt 75/10 charging a 100ah gelcell 12 v battery. It charges and maintains the battery for about 3 weeks then the battery starts to drop voltage. When I visit the site the mppt lights are flashing between modes and I have to disconnect everything and reconnect to get it charging again. Why is this happening

battery charging
2 |3000

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

1 Answer
Paul B avatar image
Paul B answered ·

check your PV voltage when you get the issue and is it above startup voltage etc etc.

can we see some displays when the problem occurs


Guessing have a look at this post, this maybe the cause.

My mppt 100/50 will not turn on when pv starts to produce

2 |3000

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