Choice of converter for AGM batteries

BFL13 wrote:
Here is how I do it as learned from others on here with AGMs. Go camping run them down, do 50-90s same as with Wets, then go home.

Now you get to recharge the AGMs properly to their "real full" the specs for my AGMs say to recharge at 14.8ish and to float at 13.7ish

Everybody says the (only) way to tell if the AGMs are full so you can stop the recharge at the right time and not overcharge, is by watching the amps as they taper down to close to zip (under 1 percent of AH) and then drop to your Float voltage. After that the amps should be stable at near zero.

So how to do that? You need a charger that you can control the voltage yourself to keep it at the charging voltage and then \drop it to the spec float (adjusted for temp of course--you know the temp and there are tables for the adjustment to voltage)

And you need an ammeter to watch the amps as above. I use my Trimetric.

The other thing to watch is the spec max amps for the AGMs. Mine say 27amps per 100AH batts so with my pair of 100s that is 54 but I use my --Yes!--55 amp PowerMax ADJUSTABLE voltage charger. (so I do not use the 100 amper or I would be way over spec amps unless I had a bank of four of these things)

There is no way you can do the right thing without an adjustable voltage charger. If you do not do the right thing, your AGMs will not die in the first 5 minutes. So it is all about money--how often do you want to replace the AGMs vs how much to pay for a proper charger and an ammeter.

I appreciate that the optimal way to avoid overcharging is as you mention above (monitor manually and adjust), but let's just say for argument's sake that I know myself well enough to know that I won't do that regularly enough to make a difference ;) Is there a charger that is 'smart' enough to compensate for my potential level of 'dumb'?