In Need of an AGM smart charger for a red top optima. Looking for the reliable better brands. Mine crapped out today at 41 and I need to get one before next weeks festivities at Indy. Keith
I have (4) cars
all with Optima batteries, on 1 car I left the interior lites ON w/yellow top and battery ran down. Pulled out my expensive Sears smart charger, set it to AGM but the battery wouldn't come up.
Next I decided to try the Optima charger so I bought it through Amazon, knowing if it didn't work I could send it back. I was pleasantly surprised the yellow top charged rite back to full charge.
Being an electronic engineer I was mystified why one charger set to AGM would work and not the other. Can't really explain it but can confirm the Optima charger worked like advertised.
I did notice that during the charge cycle with the Optima charger it did go in
defined, calculated voltage/time steps. I do know that certain later battery technologies for cell-phones, laptops are very sensitive to the charge cycle, so that each step keeping the battery temperature under control as if it goes too high the battery will never charge properly....
No I don't work for Optima, just my personal experiences....
Just my $0.02...