Good timing of this topic. My Interstate battery is also 5 years old and I'm contemplating preemptively replacing it at the onset of winter as I do a lot of driving and park outside in colder temps. I had not considered the TrueStart batteries as they only had one option in the 24F OEM group size (5th gen) with a lower CCA rating (575) compared to what you could get with other aftermarket options. However, there appears to be a newer 24F EFB (Enhanced Flooded Battery) with a higher 750 CCA rating (Toyota part number 00544-24FEF-TS). Any thoughts or concerns with this newer TrueStart 24F EFB battery as compared to the standard flooded TrueStart 24F or other aftermarket AGMs?
TrueStart Batteries catalog:
https://www.toyotapartsandservice.com/wp-content/uploads/2021/08/03_Batteries2021_hi.pdf