Frank’s current crisis was real. He had a 2018 SUV with a "Start/Stop" system that had died at a red light. The dashboard was a Christmas tree of warning lights. His cheap multimeter said the battery was 12.6 volts—full. His gut said the battery was trash.
He needed the Unlike old flooded batteries, AGM batteries lie to voltmeters. They can show full voltage but have zero cranking amps. The manual contains a secret chart: "AGM batteries below 10.5V during crank are not low—they are dead. Do not charge. Do not pass go. Replace." blue point eecr1a manual
Recharge every 3-6 months if stored long-term. Frank’s current crisis was real