I'm pretty sure I need to condition the Lifeline GPL 31T the previous owner put in my Hawk. Trouble is, I can't figure out how to do it. If anyone has experience with this or suggestions, please chime in (or PM me).
Here's what I've learned (which I provide here for others who may run into this)....
The Lifeline Tech Manual ( http://www.lifelineb....com/manual.pdf ) on page 20, tells me I'm to charge the battery fully, then apply a conditioning charge of about 15.5 volts for eight hours (I say 'about 15.5 volts' because it varies a bit by temperature--see the chart for details).
So how do you do that?
I have three chargers and was considering a fourth. Two of them don't have conditioning settings. Once they charge the battery to FULL, they're done. That's it.
Next up is my Xantrex TrueCharge2. It does have an Equalize setting. But, you can't select that if your battery is an AGM battery. And Xantrex specifically warns that the process will damage an AGM or Gel battery. And it only conditions for an hour.
So I looked at others...
Next up is a CTEK 7000, the charger recommended on the Lifeline web site (at RV Batteries | Battery Charging Equipment). That one has a Recon setting which will charge at 16 volts for "0.5 to 4 hours". I believe that means it will decide when the conditioning process will end, apparently by some measurement.
Next up is a CTEK 7002. It must be the replacement for the 7000 and I only mention it here because the engineers apparently decided the 'right' conditioning voltage is 15.7 volts instead of 16. Again for 0.5 to 4 hours.
Next I gave Lifeline tech support a call. "Dude, how do I equalize my battery?" (I didn't really say that, by the way).
The guy told me he has been getting this same call for years. The battery charger folks and the battery manufacturing folks all have their own ideas and there's little consistency. In my case, he suggested setting the Xantrex to the 'Flooded' setting, which allows the Equalize button to work. When I said it will only go for an hour, he said I'd have to monitor it and start another cycle as soon as the last one stops. It's important to keep a consistent temperature during the process. I didn't think to ask about voltage. I see the manual says the voltage 'will not exceed' 16 volts. I guess I get what I get. I do have a temperature-compensation sensor for that charger so will use it during this process if I decide to go this way.