Battery equalization

[jmarc]

Hi, Should i remove the cell caps on each battery during equalization? I know its a dumb question, but thought i should ask.

[mike90045]

NO.  Leave them on.  They have little vent holes.  If you remove them, you will get a LOT of acid mist all over the place.
Even with them on, beware of acid mist.
  Or read their manual, some brands have holes so tiny, you loosen the cap, but leave it sitting over the filler hole

Before you EQ, be sure the batteries have at least enough water to cover the plates, if you boil away enough water to expose plates, you ruin that % of the battery with dried plates.     Don't fill the cells all the way, or they will warm and the acid expand and bubble out the top !!

[Vic]

  ...   AND,  do the EQ after the battery has been fully-charged, or as much so as you can manage.

IMO,  Veq should be Temperature-Compensated,   and within the voltage range recommended by the battery manufacturer.

Use your Hydrometer,   and the EQ should be done until the SGs of the lowest cells stop rising,   and,  then EQ for an additional 30 - 60 minutes after that.

If  your batteries happen to become relatively warm,   the SG readings should be temperature-compensated,   at about three points per 10 degrees F.   Subtract those points for temperatures above the battery Reference Temperature  --  usually 25 - 27 C (77 - 80 F).

If a full  EQ  cannot be performed on a single day,  the EQ can be repeated on the following day,   after that initial full-charge.

Sometimes,  it can help,   if most of the loads on the inverter/s are shed,  to allow getting to Veq sooner,  and perhaps allowing the system to remain at Veq later in the day ...

FWIW,   Vic

[jmarc]

As always, thanks for the help!