sunshine_eggo
Happy Breffast!
I hate DALY more now.
Lifepo4 voltage drop recently
- Thread starter Echo Dawn
- Start date
I hate DALY more now.
sunshine_eggo
Happy Breffast!
Change:
Total cycle capacity 280000
balance start voltage to 3400
turn off balance only when charging.
charge under temp 2°C, release 5°C
cell overvoltage to 3650
cell undervoltage 2500
Not "Daily" - DALY is a brand of BMS different from your JBD.
The 3550 "full" voltage means once you achieve 14.2V and all cells are above 3.55V, it will reset to 100%. Additionally, if one cell goes over 3.65V, it will terminate charging and set 100%.
Total cycle capacity 280000
balance start voltage to 3400
turn off balance only when charging.
charge under temp 2°C, release 5°C
cell overvoltage to 3650
cell undervoltage 2500
Not "Daily" - DALY is a brand of BMS different from your JBD.
The 3550 "full" voltage means once you achieve 14.2V and all cells are above 3.55V, it will reset to 100%. Additionally, if one cell goes over 3.65V, it will terminate charging and set 100%.
sunshine_eggo
Happy Breffast!
If you give it a chance... You'll probably forsake the Gorilla app.
Please make the changes I recommended.
wattmatters
Solar Wizard
The voltage will climb very slowly while charging, except when the battery is nearly fully charged at which point the voltage will climb more rapidly. Below about 95% SOC the rate of voltage change is very slow.
It's only when the voltage reaches the desired charge voltage setting that the charge current will begin to taper off.
The battery is not fully charged until both the desired charge voltage has been reached AND the charge current has tapered off to a low level. Usually about 1-2% of the battery Ah rating, e.g. a 280 Ah battery would be considered fully charged when the charge voltage has been reached and the charge current has reduced to ~3-4 A.
Checkthisout
Solar Wizard
- Joined
- Nov 14, 2021
- Messages
- 4,888
Lipo4 takes a lot of current without much voltage rise until its getting close to fully charged.
They think electricity is yummy and can't get enough.
That shows how depleted the batteries were.
PotusGobbleBottom
Corn Pop was a bad dude.
This is correct.
You sort of seem like you are afraid of dumping current into a battery that doesnt have a noticeable effect on voltage.
While this is a valid concern in a lot of areas of life, it is not a concern when the goal is charging a battery. It means its hungry.
What Wattmatters said is absolutely correct,demonstrable, and safe if your settings are correct. Mostly speaking of total charge voltage and over voltage cell protection settings.
PotusGobbleBottom
Corn Pop was a bad dude.
This more pertains to lithium cobalt chemistries. Lifepo4 is lithium iron phosphate.
Lifepo4 is pretty remarkable for solar. Its TOTALLY different than any other battery from my experience.
PotusGobbleBottom
Corn Pop was a bad dude.
This could be what your problem is. If you constantly charge to 80% and never hit 100 it will certainly confuse the BMS and the % numbers would be pretty worthless and would drift.
But I have to tell you since I downloaded that app there was a reset button and it just recalibrated everything dropped it from 100 to 90% with the same voltage as it was trying to get to when it was at 100 when it hit the wall, so everything looks much more accurate now.
So yesterday at this time I’ve been at 13.15 at 90% and now I’m at 13.33 which tells me there’s 10% room to reach that 14 for possibly without an issue moving forward I’ll check it tomorrow or the next day, whenever it is, I should charge up again.
So yesterday at this time I’ve been at 13.15 at 90% and now I’m at 13.33 which tells me there’s 10% room to reach that 14 for possibly without an issue moving forward I’ll check it tomorrow or the next day, whenever it is, I should charge up again.
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