Can we talk about how sealed battery packs fail quietly?
Had a customer bring in a Canon PowerShot last week that just stopped turning on. Figured it was a simple power board issue, but after 3 hours of tracing circuits I found the sealed lithium pack had a broken internal tab. No visible damage, no swelling, just dead. Replaced the pack and it fired right up. Has anyone else run into these sealed batteries going bad without obvious signs?