I installed an Earthx on an aircraft. Fist size lithium ion battery inside an Odyssey PC680 size plastic shell. It was lightweight! Started a 540cuin engine well. Burnt up the 60A alternator from over current during recharging and finally replaced with pc680 again. Cut the earthx apart. The dinky BMS had been overheated a lot. Yeah, manufacturers will sell you a $4-500 battery that they know won’t hold up and will destroy alternators. Stick with lead for starters. Note: Add a dc charger. Then you add more weight which cancels out the 12 lb one saved by going Lithium. More complexity, greater chance of a fire. Not good all the way around.
That's not unusual for a FLA car starter battery. Most will be under 70Ah and many under 50Ah."Capacity:48AH"
Yeah, and another "surprise" with LiFePO batteries sold for airplanes is their deceptive advertising of "lead acid amp hour equivalent" figures. They are BS. If the alternator in your plane crumps and you need juice to run the EFI, fuel pump, ignition, radio, etc, then you want the real amp hours to get you to a safe landing, not some marketing BS "equivalent" (and you won't much care if you run the AGM battery down to 10V while getting to a runway--buying a new battery is a pittance in the grand scheme of things).
Oh. Gotcha. Yeah, that is worthy of an eye popping astonishment.
Fortunately, most aircraft have a lot redundancy built in if the builder/manufacturer wants to prolong their life/end users life. This particular one has an AGM to run avionics. The engine has a mechanical fuel pump and two magnetos. About 400 Inrush Amps to crank.
i have a first gen yamaha fz1 and the charging on it is very poor. the motor was designed for racing in the r1 bike, now it is in a street bike. and the generator can not cope with having lights on it. (stop bike, turn lights off). the bike's motor was never meant to power lighting.
