The Toyota OEM battery in my Tacoma appears to have bitten the dust. (Mfg JCI date code Nov 18 2014, size 27F) Cranked fine yesterday - drove out of town and back, ran errands afterwards, no issues. Today I go out and start it up, it does crank over but very slowly and lights and displays dim noticeably. On the next start, it does the click click click and classic signs of dead batt. I use my portable jump pack to start it up - no problems. I put it on my Schumacher smart charger (6a charge rate) 1.5 hours ago and now the charger says fully charged, does not indicate any problems otherwise. If battery were depleted enough to not start the truck, I imagine the Schumacher would have taken longer than 1.5 hours to charge it up. Any thoughts? About 5 years seems like the typical lifespan of a battery in my region due to temperatures. I expected a JCI battery to last somewhat longer, but always possible the engine bay in this truck is hotter than on previous vehicles.