Light weight batteries?

I’m digging this thread out of the grave.
Anyone using these here? Antigravity batteries. H7/Group-94R Lithium Car Battery
There was a discussion the other day about battery location. With one of these located under the rear / passenger side seat in a frenched in box would be ideal. They look to be shorter than an AGM. Direct replacement for a Hellcat.

H7-60-RS​

40 Amp Hours​

1500 Cranking Amps
15.6 lbs

FEATURES & BENEFITS​

First Battery with WIRELESS Built-In Jump-Starting! Wireless Keyfob Remote actuated Emergency Jump Starting. So you won't be stranded by a dead battery ever again!
FULL Battery Management System (BMS) including Over-Discharge, Over-Charge, Short Circuit, Thermal Protections and Cell Balancing.
RE-START TECHNOLOGY: The RE-START Battery has self-restarting capabilities. It intelligently monitors its status and if it senses over-discharge it will put itself into a sleep mode, yet saves enough energy to allow you to RE-START your vehicle. Simply press the Wireless Keyfob.
OEM FITMENT: Exact Lead/Acid Replacement sizes. No additional modifications or trays necessary to install.
LONGER LIFE: 2x to 3x the lifecycle of lead/acid and other Lithium batteries due to full Battery Management system.
HIGH POWER: Up to 3x the Cranking Amps of similar sized lead/acid battery. Better Starting and higher voltage at start-up.
ULTRA LIGHTWEIGHT: The Antigravity RE-START Battery can be as much as 70% lighter than the Lead/Acid equivalent. This equates to roughly 25-55 lbs of instant weight-loss just by changing out the battery! That makes the Antigravity Lithium-Ion Battery the most cost-effective weight-loss product hands-down, while offering better starting, handling and braking! A real performance value!
LOW SELF-DISCHARGE: The RE-START Battery does not self-discharge like Lead/Acid Batteries. It offers a longer storage time provided there are not excessive Parasitic Drains on the battery.
DURABILITY AND CAR SAFE: Much more resilient to vibration than Lead/Acid. Incredibly shock and vibration resistant; no liquids or acid inside to spill or drain out. Will not release dangerous Hydrogen while Charging and will not leak liquids that are damaging to your finish or chassis such as acid.
ENVIRONMENTALLY SAFER BATTERY: No Acid or Heavy Metals such as Lead, Cadmium, or Mercury. Always remember to Recycle your batteries responsibly!