to each his own
I've stated my reasons for sticking with conventional batteries above; I haven't seen (firsthand) ANY benefits from AGM, GEL, or the newer Lithium-based batteries, but have seen problems with the latter three.
AGM: my one Optima Yellowtop (in my camping trailer) has died twice on me, when I wasn't diligent in checking the non-smart trickle charger I was using, 7-8 years ago. It took me days of de-sulfating and "shocking" the battery to bring it back from the dead. I tried to save a neighbor's dead AGM, but couldn't.
GEL: back around '98-'00, racing GEL batteries were the coming thing to use, so I tried them, twice. They were finicky about underhood heat, and what amperage you could charge them at. After one underhood just died at a race, I moved the next one to the trunk, and it lived for awhile, but it didn't last the rest of the season. I didn't use an alternator, but recharged between rounds, and the GEL just couldn't take it (and they were damned expensive).
LITHIUM: the present "coming thing", for EV's, phones, and solar guys. I'm sure I could find one to fit in the X, too, if I tried. However, they're ridiculously over-priced, love to spontaneously self-ignite (I've had two Lihium Ion batteries attempt to do so, in two Samsung phones I've had, a S7 and a S8+), and there are documented stories of EV's worldwide igniting, using Lithium batteries. I'll never go Electric, ICE-ICE, baby!
I'm ignoring the propaganda permeating the auto industry, concerning EV's, and even toward "advanced battery tech". If it ain't broke (and it ain't) why fix it, or re-invent the wheel, or re-brand Jaguar, for that matter. I'll just keep my old vehicles running as long as I can, using old-school gasoline and old-school batteries.
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01 BMW X5 E53,3.0i-5L40E, 7/13/01
topas-blau,Leder-grau,"resto-project car"
Here:
14 Lexus ES350,3.5L-U660E
09 HHR Panel,2.2L-4T45E
04 Chevy 2500HD,6.0L-4L80E
98 GMC Sierra 1500,5.7L-4L60E
Gone:
66 Chevelle Malibu 2dr ht.,327>441c.i.-TH350>PGlide/transbrake
08 Cobalt Coupe,2.2L-4T45E
69 & 75 C10s,350c.i.-TH350
86 S10,2.8L-700R4
73 Volvo 142,2.0L-MT4
72 & 73 VW SuperBeetles,1.6l-MT4
64 VW,1.2l-MT4
67 Dodge Monaco 500 2dr ht.,383c.i.-A727
56 Chevy 210 4dr,265c.i.-PGlide
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