Trojan T-105 charging specs

Mine has been verified full charge with hydrometer. And I really try to avoid using the thing.

The 15 minute daily boost in storage is very similar to the Progressive Dynamics converter.
Seems to work for me.

HOLYGEEMANEEZ

With solar, set float maintenance energy by amp hour accumulation. Then verify with a dip de dip de dip doo-wah.

OK i had mine set at 2hrs when we were using it, just changed it to 1hr but maybe ill adjust it to like 15min then for the next 3mo since its not going to be used at all.

IIRC My absorption is set at 14.35 volts. 15 minutes if battery starts above 12.5(storage), 135 minutes if above 11.9(normal use), all day if below 11.9 volts(dilithium crystals are melting). My voltage is a bit lower than most recommend as the batteries are getting old and gas quite a bit heavy if I go 14.6+ volts. Bulk resets if accumulated time loads the battery below 12.2 for 20 minutes (heavy microwave use). Float is 13.35 volts.

smkettner wrote:
SunSaver is a slam dunk to keep the Trojans happy. I especially like the availability to automatically adjust absorption time when in use vs. in storage.

Hi smkettner what amount of time do u set the absorption charge at 14.8v while trailer is stored? (battery disconnected but still attached to solar charging)

hmmm, I wouldn't recommend "torquing down" a set of heads by feel.

It would be beneficial for all, if folks were to express the "age" of their batteries in cycles and d.o.d.'s; not years. A battery essentially sitting on float for 5 years proves nothing as to its durability or state of health.

As for AGM's, the inability to check their SG is a CON of agm's, not a pro.

SunSaver is a slam dunk to keep the Trojans happy. I especially like the availability to automatically adjust absorption time when in use vs. in storage.

So I wanted to follow-up. Received the USB-Meterbus adapter today and gave it a try. It was very easy to setup the software and you have access to literally every setting via MSView. I was able to match exactly the charging setpoints of the Sunsaver MPPT controller to the Trojan T-105s.

At the end of the day I have no way of really telling how much benefit this will bring (just geeking out here really), but its kind of cool to know you can match up your system to the exact specs of your chosen batteries. Just need to get it out for some spring dry camping now :)

Thx for all the help.

Jetta03 wrote:

westend wrote:
I think a lot of folks are also using a serial to USB conversion as USB is easier to manage for connectivity. Do you have the serial cable that ships with the controller or are you using a meter bus accessory?

Thx. The controller has RJ-11, and there is a new RJ-11 to USB adapter you can buy that replaces the old RJ-11 to serial unit. I think I might have a line on a distributor who may have it.

Good choice. I still haven't mastered MSView but I can make most of the functions work (having a time with saving files and making graphs).

westend wrote:
I think a lot of folks are also using a serial to USB conversion as USB is easier to manage for connectivity. Do you have the serial cable that ships with the controller or are you using a meter bus accessory?

Thx. The controller has RJ-11, and there is a new RJ-11 to USB adapter you can buy that replaces the old RJ-11 to serial unit. I think I might have a line on a distributor who may have it.