Lithium Battery Question
I am thinking about converting my 2020 lance to Lithium batteries. I want to do it as inexpensively as possible. (Battle Born ain't gonna happen) Can anyone tell me what specifications I should look f...
Forum Discussion
Very interesting! So that's like the other guys saw, that the voltage does not spike till a high SOC. (Not the same thing as when Bulk ends and amps taper though--that depends also on charging amps vs bank AH)
I saw somewhere that the cells are 3.2v nominal so that's where the 12.8 comes from--4 x 3.2 = 12.8
On recharging at 14.4 you don't know the battery voltage (as usual) so your marker for stopping the charge is somewhere before you get to minus 3 AH on your monitor (assuming it was zeroed recently)
EDIT--I don't know how that BMS cycling works for observations--can it be the marker, when that starts?
Your SOC table for the flat part (under 97% SOC to ?) is at 20 AH per 10% so that's easy.
You will pick your own low point as mentioned, so you are good to go.
I have been going with generator recharging for all this, but with solar, you will also get to 97% on good days. How do you stop the solar? You can stop the gen. Perhaps you need a way to stop the solar in the afternoon if you get to 97% so the voltage does not then spike to where the BMS shuts off the battery (just as you are doing something with 12v! Oops!)
EDIT--on that solar shut off--what if you are away from the rig when it gets to that? Any harm done before you get back? If you have to shut it off before leaving that could lose you the day's recharge. Beats me!
I saw somewhere that the cells are 3.2v nominal so that's where the 12.8 comes from--4 x 3.2 = 12.8
On recharging at 14.4 you don't know the battery voltage (as usual) so your marker for stopping the charge is somewhere before you get to minus 3 AH on your monitor (assuming it was zeroed recently)
EDIT--I don't know how that BMS cycling works for observations--can it be the marker, when that starts?
Your SOC table for the flat part (under 97% SOC to ?) is at 20 AH per 10% so that's easy.
You will pick your own low point as mentioned, so you are good to go.
I have been going with generator recharging for all this, but with solar, you will also get to 97% on good days. How do you stop the solar? You can stop the gen. Perhaps you need a way to stop the solar in the afternoon if you get to 97% so the voltage does not then spike to where the BMS shuts off the battery (just as you are doing something with 12v! Oops!)
EDIT--on that solar shut off--what if you are away from the rig when it gets to that? Any harm done before you get back? If you have to shut it off before leaving that could lose you the day's recharge. Beats me!
