Epever tracer bn series and lifepo4
- Thread starter CyBerT
- Start date
Sheps
New Member
- Joined
- Dec 18, 2022
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I use WIFI as well, I like it. I use 2 charge controllers one is Epever one is Renogy both rated at 100V max.
Just bought CHINS 12V 50Ah LiFePO4 Battery and concerned now after reading all the info out there so many views it is daunting.
I use Epever software V 1.95 CC is a 2210A model. Battery arrived with info and I plan on using what they recommend.
Software parameter settings are my hurdle, I was using that 1st parm selection since I had a a SLA battery I clicked "read"
and only changed volts and Ah for battery. However I see a 2nd parameter choice says "LIPO" arrangement should I just use that instead?
And if so will it read my CHINS battery OR should I manually change things and to what specs?
Thank you it is all a learning curve for sure.
Don B. Cilly
Energetic energy padawan
You should set them yourself. The only one that counts, IMHO, is max. charge voltage.
Me, I set it to 27.8 (would be 13.9 for 12V) so they charge fully but not overcharge.
Set it to whatever you think best.
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Me, I set it to 27.8 (would be 13.9 for 12V) so they charge fully but not overcharge.
Set it to whatever you think best.
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Browneye
Dr. WattSon
Loading the 'lipo' settings is a good start, actually for lifepo4. Maybe they call it 'lithium'. Anyway, most find the default 14.4 or 14.6 boost voltage to be too high, with some cells over-volting and bms shut down. 14.0 to 14.2 will charge fully without over-volting. Duration of two hours may also be too long, although can work with a lower boost voltage, say in that 13.8 to 13.9 range. I set mine for about 30 minutes at 14.2. If I try to charge higher than that I'll get runaway cells that reach full charge before the others. In storage mode I set it to 13.8 for a one hour duration, which serves to get it to about 90% before switching to float.
You can charge high and fast for a shorter duration, or lower and slower for a longer duration - whatever best suits your application.
Equalize should be set to zero time, the voltage will default to whatever you set your boost to.
Float is generally 13.4, will maintain a high level of charge and service loads. If you get too much discharge it can be a little higher. I use a lower setting for storage, a higher setting for active use when we're living in the unit (RV).
Re-boost voltage is when you want it to start the boost cycle over, so when your battery gets down to a level you want it to activily recharge - I think the default is 13.2.
Even if you start from the 'lithium' settings as soon as you adjust any values it's going to display 'user' - just means you have custom settings from their defaults. I leave max and mins at default as they don't really come into play on my system.
By selecting the 'lithium' settings you get all the parameter options for LFP charging.
Hey guys I finaly got my cells. Iam using a 4s configuration for now. I have a few questions.
First I checked the info and it says "boosting" but it should be in bulk charge. I set boost charge to 13.8v. And it was at 13.22
My second question would be why can I lower firs
t two parameters: Over Volt. D
isc. and Charge limit? I cannot get it below 14.7v/14.5v.
And third the voltage measured by charge controller is slightly off should I offset the diference?
First I checked the info and it says "boosting" but it should be in bulk charge. I set boost charge to 13.8v. And it was at 13.22
My second question would be why can I lower first two parameters: Over Volt. D
isc. and Charge limit? I cannot get it below 14.7v/14.5v.
And third the voltage measured by charge controller is slightly off should I offset the diference?
Attachments
12VoltInstalls
life passes by too quickly to not live in freedom
No.
The battery static voltage at present is what that is showing.
It ‘could’ be off for one reason or another, but while batteries are charging the battery voltage will show lower than solar charge controller may actually potentially be capable of; you want the SCC to curb output before the BMS’s cut you off.
Ok I sm using jk bms with balancer. It has calibrate option and I calibrated it with my voltmeter and the two(bms and scc) are really of.
12VoltInstalls
life passes by too quickly to not live in freedom
Does your model have the separate battery voltage sense wire?
12VoltInstalls
life passes by too quickly to not live in freedom
What’s the resistance on the charging cables and how do they compare to the terminals volts?
Hi, the problem was actually the chineese voltmeter that was off for roughly 2v! And the other one was flickering, from the cold I guess. I have 3 voltmeters and not one shows the same value 
I did not even bother with measuring the cables. I have to re-cable the whole thing again anyway. I just recalibrated the hole thing a bit to compensate for few mV diference.
I finali started reading the manual for scc and I noticed that the menu values are from high V to lov V and I had a mismatch.
I could not do much testing because I am seriously underpanneled, but at the top section of the curve everithing looks OK.
I did not even bother with measuring the cables. I have to re-cable the whole thing again anyway. I just recalibrated the hole thing a bit to compensate for few mV diference.I finali started reading the manual for scc and I noticed that the menu values are from high V to lov V and I had a mismatch.
I could not do much testing because I am seriously underpanneled, but at the top section of the curve everithing looks OK.
Ok long time no write. Actually I noticed it has a seperate battery sense terminals. You were right but I did not notice it. Got everything rewired with 50mm2 cable. Seriously oversquared
. No diference. Then i connected this voltage sense wires and there it is. All voltages match, the charging is now constant and it works great. The epever custommer support was a big help!! They actually helped me tremendously. Also got the usb cable to computer working. It is farely easy. If anibody is interested I can write more obout it.
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