FloridianLWR

iYep, it finally worked, the first time I ended up with the battery led blinking red all the time, not just 4 times, and the second time atarted flashing red/green at the same time and connected the wall charger and the wall charger led will make long blinks in between red and green like it will charge and then cur off and then charge back again, eventually it stayed on and charged the battery fully. Connected it and checked that everything was working ok and updated firmware and still is running fine. Again, thanks!!

Ok, second attempt worked much better the battery led started blinking red/green (at the same time) and after connecting just the battery to the wall charger it was like that for like 10 minutes doing the same thing (the wall charger will be green and red as well) and now the wall charger is completely red and it seems to be charging. I'll update if everything goes wall. I guess that if you do the same thing with connecting the wall charger with the cables in parallel will have the same effect. Thank you Siriussak!!!!!!!

Siriussak, Thanks for posting that solution. I also have 2 units and connected both batteries together in parallel as you suggested but after connecting them for a few seconds the "dead" battery has the red led blinking all the time now. I connected it to the charger and the charger led is still green not red like when it charges. I'll try again.