Antigravity vs AGM in the GTC4Lusso – Real Data vs Fearmongering

I wanted to cut through the noise created by a recent YouTube video from Micah at Hollywood Mechanic My GTC4Lusso (with the battery mounted in the engine bay, so yes, subject to heat) has gone through AGMs every ~6 months. I recently switched to an Antigravity LiFePO₄, and here’s what I’ve observed:

Real-world results:

– Immediate, confident starts (stop/start now seamless).

– Charger registers “full” after drives—never happened with AGM.

– The car feels more responsive and even sounds healthier, likely because voltage holds up better under transient loads.

What Antigravity’s CEO clarified:

1. Heat: LiFePO₄ is not more fragile than AGM. Their batteries include insulation, monitoring, and over-temp shutoff if the internal cells ever truly overheat. That scenario is vanishingly rare in passenger cars. Suggesting fire risk is alarmist and unsupported.
   
   
2. Charging: The 20 A / 14.6 V label Micah cites is for standalone chargers, not alternators. The actual pack can safely accept much higher transient currents (their 80 Ah unit can theoretically handle 400 A). Reading the label literally shows a lack of understanding of LiFePO₄ chemistry.
   
   
3. BMS: Doesn’t instantly cut off on a momentary spike. It evaluates duration, context, and temp before acting. If protection does kick in, it restores automatically once conditions normalize.
   
   
4. Performance advantage: LiFePO₄ maintains voltage under heavy electrical loads better than AGM. That’s exactly what I’m experiencing—less voltage sag, stronger spark, healthier electronics.
   

Conclusion: Micah’s video takes specs out of context, paints worst-case scenarios, and misses the real engineering. My Lusso is running better than ever on LiFePO₄. Fearmongering helps no one.

Antigravity even offered me a Bluetooth tracker to log temps and voltage—so I’ll happily post hard data soon. That’s how to have a real conversation, not YouTube panic.

After watching this video, I contacted Anti Gravity and got a response from their CEO, and he added his response directly to the comments in this video.

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Note, Micah from Hollywood Mechanic has a well deserved reputation of fear mongering in an effort to gain clicks. Please take everything he says with a HUGE grain of salt.