Quote:
Originally Posted by sroth004
Old school 1.25 amp Battery Tender brand on all the cars when they sit for more than a couple of weeks. Works fine through the under hood charge/jump lugs on the e53, e46, e39 and e90; all are AGM and 6-8 years on a battery ...
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Same here: on the 5th? or so replacement batt on our 2001 E53, (current batt is probably 5 or 6 yrs old and maybe ready for R&R?), and have been using an AGM batt, (various brands) since the OE batt died couple decades ago.
Same for our 2002 Vette Vert, since the OE batt died in ~ 2005...
Same old Batt tenders, decades old, for charging.
One or both of those cars gets a long rest 'sleep' also for winter season in garage, and I usually attach Batt Tender, very well electrical taped tight on the under hood lugs, and the tender plug wire attached to an old fashioned mechanical appliance timer: set to come on/charge a couple days a 'week' for 12 ish hours.
Knock on fookin wood, not prob with that rig job, but it has worked flawlessly for me, for a couple of decades.
Edit, Add On: thinking about 'my batt situ', up until a couple years ago I had 4 motorcycles in the stable, ranging from a pristine 1987 Hurricane 1000, a '94 Goldwing, a 2002 HD Soft Tail and my 1st 'new' m'cycle, a 1975 HD Superglide. I went to AGM batts for my Scoots as soon as a specific AGM batt model was available for each, way back when.
All the batts worked well, none were affected by what ever alt/charging system, etc. And, I 'know' v little about vehicle alternators, etc, but AGM batts have worked nearly flawlessy for me over the decades.
GL, mD