[QUOTE=NAGG;1694429]
Dc2dc chargers are recommended because lithiums require a specific profile to be kept in peak performance which a normal alternator cannot provide. The lithiumax bms will still shut off in the event of an error to protect the battery in the event of extreme low or excessive volts and stop charge going into the battery- it will not stop a voltage spike running from the up hill side of the battery mate- I too have spoken to lithumax and derived my own opinion. At the end of the day it’s your boat and your choice- I’m just stating the limitations of the system.
Give a man a fish & he will eat for a day !
Teach him how to fish
& he will sit in a boat - & drink beer all day!
TEAM MOJIKO
Just to bring this back up.
I’ve been researching my options in this space for a little experiment I have planned using 40Ah Yinglong Lithium Titanate oxide batteries (for a cranking battery). Because they have a very high charge limit voltage in a 6S configuration of 17.4v. Coupled with the fact they have very high charge/discharge qualities, I was thinking that I could get away with not using a BMS all together, or even if I did, the BMS would never disconnect for over voltage protection running off the alternator/regulator of the outboard.
This sat really uneasy with me and would partially negate the experiment if I couldn’t monitor exactly what was going on through a battery management system.
Today I found his little gizmo that should put me at ease about frying my alternator if there is an issue and the BMS (or another scenario) produces an open circuit situation while the engine is running. This should also be applicable for anyone wanting to use LifePo4 batteries as cranking batteries.
https://sterling-power.com/products/...tection-device
or
https://www.outbackmarine.com.au/bal...module-12-volt
would be great to get any of our resident leccy experts to weigh in on this.
Democracy: Simply a system that allows the 51% to steal from the other 49%.