Observed arrival · 2026-09-01
Prius Battery Guide: Red Triangle, P0A80, and the Next Bill
A focused decision guide that helps Prius owners distinguish a dead 12-volt battery from a failing high-voltage pack and compare replacement paths.
Field notes
The guide uses symptoms and diagnostic codes as the first branch in its decision process: a dark, silent Prius points readers toward the auxiliary battery, while a drivable car with a red triangle and P0A80 points toward the traction pack. It separates Gen 2, Gen 3, and Gen 4 ownership contexts, then compares DIY sodium modules, shipped remanufactured packs, mobile service, and dealer work. Its price examples range from roughly $950 for a shipped recon pack to $5,000 or more at a dealer.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue