Battery charger - equalization

I recently purchased a set of Trojan T105s but dont have a charger for them yet.  Im trying to find a charger which will accommodate equalization mode.  I am having a hard time finding best approach to make sure they are charged and when needed i am able to perform EQ.  There is seemingly fine print on a lot of chargers out there on what they do.  What is suggested option?

Unit is in unaccessible storage and batteries are stored in basement for winters.  That said, I will need to maintain the batteries each winter, so would like to get something which will last and treat the new batteries well - being able to charge and EQ.  I plan to plug to house line during season via dogbone or solar suitcase in the driveway.

CTU, I didn't find a requirement for equalization of my dual 6v's. Charging in series mode, like they are in the camper, does it fine. Of course this is when they are bought together, one old and one new will only produce according to th weaker of the two.

I think equalization is less needed in batteries that move. The physical movement will help agitate the electrolyte. It is only when they sit for months at an end that it would become an issue. For example, a battery bank in a fixed solar installation. There is no physical agitation there (unless there is an earthquake).

Here is Trojan’s battery maintenance procedure for their flooded deep cycle batteries.

https://www.trojanbattery.com/tech-support/battery-maintenance/

They recommend equalization based on cell to cell specific gravity differences, which will typically be required somewhere between once a month and once a year. Equalization is performed at 2.7 volts per cell at 25C (temp compensated at -5mv per per cell per degree C) until cell sg’s stop rising.

How much of this procedure you do is up to you. But a hydrometer and bench power supply are inexpensive and can be used for other things. I wouldn’t use a crappy unregulated charger for anything, I’ve seen multiple sets of cooked batteries among my solar customers over the years. Not worth it.

I don’t buy the moving batteries don’t need equalization idea because that won’t do anything to change cell to cell sg’s. Automotive batteries don’t need as much aggressive charging as deep cycle batteries do because they use a different chemistry. That is the trade off, adding antimony to the plates in deep cycle batteries improves their tolerance to harsh cycling at the expense of more water consumption and more frequent equalization requirements.

Read this:


https://batteryuniversity.com/learn/article/lead_based_batteries