Strange charging parameters Blue Power IP65 14/7

DIY
, ,
1

I have a car which wasn’t used during winter timeframe. Battery (70 Ah) was discharged almost completely.

2 days ago I have charged it using my VC IP65 14/7 - normal mode (14.4 V).

I didn’t check parameters on my phone during whole process but process looked normal based on diode status and ended in float status - whole cycle lasted ~ 12 h.

The point is that my batter is still not charged. I have reconnected my charger again checking parameters in the app this time.

Charger quickly switching into Absorption status but app shows 14.4V and 0.9A only ! and after ~ 1h it shows float status. (but battery is still not charged)

Any ideas what should be changed to have battery recharged in reasonable timeframe ?

Thank you in advance

2

The Battery.
Lead batteries left flat for a long time will sulphate, after which they are no good for anything- apartfrm recycling.

3

Its not charging. What’s the voltage at the battery terminals with no charger attached?

You may be able to bring it back but it will suffer long term from being deeply discharged.

Make sure the water is full if applicable and try the high/recondition function and see if it comes back.