New CALB batteries I tested

H

HighTechLab

New member
Joined
Mar 7, 2020
Messages
1
Hi Everyone!

I just got some new CALB Ca180 cells from china and I think I actually got genuine ones this time! The seller that I got them from is Deligreen Power, the same company that has the good active cell balancers that can move up to 6 amps.

Last time I bought CA100 cells they were heavily used and they still have lasted me a year and running strong. I really am excited because I hope to build a battery bank that uses 64 of these cells in the future for my off-grid power system.

What do you think?

 
Charging to 3.8V for LiFePo4? not sure those cells are going to last long at all.
The linked manual says 3.65V max, even this is "kicking up" off the flat part of the usual charge/discharge curve for this chemistry.
The manual words "charge disconnection at 3.8V" is the over voltage level where protection systems should be disconnect the battery not the normal "charge to" voltage.
You do say that using with SoC range 10% to 90% is better for the cell in the video at around 14:50 which is great.

I'd suggest monitoring the cell voltage when charging for your particular cells & learning where they start to rise quickly & stay just under that.
Mine do this at about 3.50V so I now charge to about 3.41V.
It seems LiFePo4 cells absorb charge (& some useful SoC%) if you charge to just under the above "knee" & hold them there for a while.
By holding there, I see the current taper away after about 30 - 45 mins once this is reached.
Early on when I tried higher per cell voltages, I saw some cell voltages spiking up & the pack would quickly get unbalanced & trip BMS limits.
Since setting to 3.41V, the pack has stayed in balance nicely for >2.5 years.
 
CALB batteryare a type of advanced lithium-ion batteries that offer several distinct advantages over other types of rechargeable cells. One advantage is their high energy density, meaning they can store more power per unit weight than most lead-acid batteries. Additionally, CALB battery are lightweight and compact, making them easy to transport and store. They also require little maintenance and can be used without frequent recharging. On top of this, CALB battery are generally more efficient than other types, so you can get better performance from your equipment. Finally, CALB battery are eco-friendly since they use fewer hazardous materials in their construction and manufacturing process.
 
Last edited by a moderator:
Got to be a marketing entry.....
 
You must log in or register to reply here.
Back
Top