Buckland is using a LiFePo4 charging profile. He knows more than most on this forum re: these batteries.... heck, he built his own 12v battery from scratch!
And correct me if I'm wrong, but this WAS working before, right? This is a recent issue?
I just got a BattleBorn 100AH for my new PUMA build out. As a newbie to LiFePo4 I have relied on rando, Craig333, buckland, PaulT and others (sorry if I missed you) who have been pioneers in this area.
The stuff I know I also gleaned from Will Prowse -
LINK, who is enthusiastic, knowledgeable and helpful. Also from Battleborn's web site on using Victron gear with their batteries -
LINK and from this helpful dude -
.
I usually avoid reading comments on social media posts, but in this case there were some useful ones, and I quote:
Paul G - on Oct 29, 2017 at 10:09 AM - said:
Here's a quick reference so you don't need to keep replaying the video like I did. There are only 4 changes from default (01, 02, 05 and 06) marked with a *:
01 Battery Capacity - 99AH*
02 Charged Voltage - 14.4V*
03 Tail Current - 4.0%
04 Charged Detection - 03
05 Puekert Exponent - 1.05*
06 Charge Efficiency Factor - 99%
07 Current Theshold - 0.10A
08 Time to Go Averaging Period - 03
09 Zero Current Calibration - ZERO
10 Synchronize - SYNC
11 Relay Mode - DFLT
And then Denis Phares added to this on June 2, 2018 at 4:449 PM
Try reducing your end charging current from 4% (as suggested in the video) to 1%. This will allow the batteries to be topped off in the absorption stage a little bit more. This will also allow extra time for balancing. If the charge current is high, than [sic] 4% of the charge current my be too high for the final top off.
All that said, in my BMV 712 I have my Bulk/Absorption voltage set to 14.5V with a 30 minute Absorption cycle per recommendations from Battleborn, and float set to 13.5V.
And the 100/30 MPPT controller is set as in the notes above.
I also recall rando saying something about backing off from those setting to keep the battery between 10% and 90% SOC, as LiFePo4 chemistry rewards not using the full cycle of available SOC by vastly increasing the number of discharge cycles they will tolerate. Unfortunately I don't remember the details.
Now, my Buckland isn't getting a the batteries to go beyond 13.2V.... I don't know, but hopefully something in the above info will be helpful!