Standard flooded or AGM?

[mike]

2007 Liberty, a little less than 73000 miles. 3.7, auto. Currently has a 6 year old Super Start Extreme (part no. 34EXTJ) standard flooded battery. No obvious battery issues, I want to replace the battery because of it's age. This is my wife's car, it's driven less than 1500 miles a year. Mayhaps less than a thousand. I'm wondering if I should get an AGM battery? The Super Start Extreme has been real good, and I often (weekly or more) leave a Noco charger/maintainer on it at least overnight, sometimes for a few days. My question is, should I replace the battery with an AGM or get another Super Start Extreme?
Thanks, Mike

 

[LibertyTC]

I stopped buying lead acid batteries many years ago. AGM's tend to provide greater cranking power, especially when it's below freezing.
You won't see corroded terminals on AGM's either.

 

[u2slow]

I'm recently onto the second AGM in the jeep. Pro-actively replaced at 7yrs. Keep it as a shop battery till the end.

 

[Luke]

AGM FTW! … just be aware that they like to receive more volts for proper charging, raising the voltage to ~14v will extend the life of your battery.

 

[mike]

AGM FTW! … just be aware that they like to receive more volts for proper charging, raising the voltage to ~14v will extend the life of your battery.

I'm not sure what all this means, Luke. You say they like to receive more volts. Does this mean that if I switch to AGM I'll also need to change the alternator? I have a Noco Genius 5 tha I use regularly. If I change to AGM will I want to use it from day one?

 

[Luke]

Unfortunately I never had an AGM in my KJ … my current beast is a Toyota FJC. You can use a diode to “trick” the alternator to provide increased voltage … or you can buy a pre made device similar to below. Perhaps the KJ/KK dudes will chime in.

https://voltageboosterpro.com/product/voltage-booster-pro-texas-slim/

 

[KJowner]

I'm fairly sure the charging system on the KJ is controlled by the ECU so fooling it may be difficult.