House Battery

[Gnome1]

What voltage should my house battery read fresh off the charger?

[Gale_Hawkins]

13.2v fresh off the charger. Three days later ours will be at about 12.9v if not connected to any load.

2.2 x 6 = 13.2

[Dakzuki]

2oldman wrote:
That number is not meaningful. Let it rest awhile.

Correct. A fully charged battery after resting a few hours is the only way to tell accurately. That number will be 12.6-12.7 for 100% full.

[lanerd]

mikeh449 wrote:
13.6

NO!

13.6 is the charge you will see when connected to a charger that is in float mode.....not when disconnected from the charger.

As mentioned, Once the battery has been removed from the charger and has rested for a while, 12.6 - 12.7 will be a full charge voltage reading.

Ron

[2oldman]

That number is not meaningful. Let it rest awhile.

[RoyB]

A battery fully charged will read 12.6-7VDC in its RESTING state.

Consider this handy STATE OF CHARGE CHART


If you are connected to shore power and your smart converter/charger is powered up you may see any of these DC voltages depending what smart mode the unit is in at the moment:

Boost Mode: 14.4VDC - Rapidly brings RV battery up to 90 percent of full charge

Normal Mode: 13.6VDC - Safely completes the charge or maintains the charge

Storage Mode: 13.2VDC - Maintains charge with minimal gassing or water loss during periods of non-use or storage

Roy Ken

[mikeh449]

13.6