Trojan T105 Watering

I am happy with the Pro Fill system. Not automatic but very easy to stick the tube in a gallon of distiller water once a month a pump the pump a few times.
The caps are better than OEM and less water boils out too.

The way I was taught back in the 1960s was "Bottom of split ring (Cut line you called it) or just below.

DEKA (Just got brand new DEKA's for house) says either 1/4 or 1/8 inch below the bottom of the filler tube (Same split ring/cut line) Leave a gap.

With time and experience I have came to adopt DEKA's recommendations many years before I bought DEKA's and downloaded their "Owner's Manual"

WHY below the tube: First, the liquid level can go up as the battery is charged or as it warms due to use or sunlight or weather changes.. Second, that slight air gap gives it more breathing space.

If the batteries are low on charge when you top off, consider half an inch below the tube and re-fill when charged.

I had them on 6v battery tenders over the winter.

Topped off the fluid with distilled water to the notch as noted. Cleaned them nice and pretty and set them in the garage to install next day.

The Next day one of them was wet near one of the end cells. I assume it just bubbled over just sitting there, but was surprised as it was not on a charge. Looking into the cells I can see it is always bubbling, so I suppose it could have just overflowed naturally. I lowered the levels and will check it later today. No obvious signs of cracking on the case anywhere.

Everything points to overfilling at this stage. What I am reading is saying only fill to 1/2 inch above the lead or 1/8 inch below fill tubes. I have always "topped them off.." to the cut as mentioned.

I did upgrade my converter, so that should not be an issue.

This is what I am thinking about, but there seems to be an issue with the T105's

http://www.amazon.com/dp/B001FCAXT0/ref=wl_it_dp_o_pC_ttl?_encoding=UTF8&colid=2XCVGSB6XWZDO&coliid=I10XUPF9OAQA5S




max

In addition to Roy's suggestion check into water miser battery caps.

-Jeff

You might also want to check your model Converter/Charger you are using. Your age of RV Trailer might have the single mode type converter/charger unit installed that puts out a constant 13.6VDC all the time. This charge voltage is right on the edge of boiling out battery fluids over time.

If you have the single mode type converter/charger it might be a good idea to change it out for a multi-mode SMART MODE converter/charger unit. The PD4600 or PD9200 series converter/chargers are great SMART MODE units to have.

These smart mode units will take real good care of your batteries for you.

Roy Ken