I was able to post this week’s video ON Friday. We shot a good bit of it last week. So this week we do a 4C load test of four CALB 100AH cells. The test actually consists of 40 pulses of 400AMPS lasting 2.5AH or about 30 seconds. The CALB cells list 4C for 30 […]
4C LiFePo4 Power Tests Read More »
This week we digress a bit from vehicle issues and take a look at the progression of LiFePo4 cell offerings over the past two years. We also do some full 1C discharge and charge tests on the cells. The first cell in this series is a Thundersky TS-LFP160AH cell we purchased about 18 months ago.
April 16 Friday Show Read More »
I’ve heard a lot the last couple of weeks regarding our top balance/bottom balance situation. Most of the online forum engineers did NOT skip a beat. They went off of current shunt balancers pretty much cold turkey, but immediately lunged to monitoring individual cell voltages for a “low voltage limit” as the holy grail of
OK. HERE IT IS. SAG. VOLTAGE. MORE Read More »
As you may know, I’ve been a bit at odds with the cognescetti of the EV community on the topic of Battery Managements Systems, and particularly of the form of shunt balancing circuits. They’re pretty much unified in the position that you have to have them or you will kill your expensive LiFePo4 batteries. My
GET RID OF THOSE SHUNT BALANCING CIRCUITS Read More »
We’re nearing completion of the battery box installation on the 2009 Mini Cooper Clubman. This pretty much had us down in the floor wrestling in the mire. Not sure just how much video will be useful. I have posted a new video with the gas tank boxes, but the other two – I can see
Sky Energy’s Blue Sky Cell Data Read More »
We’ve received a lot of questions about the Thundersky LiFePo4 batteries we used in the 1957 Speedster conversion. I’ve done an hour and a half video on the topic of battery chemistry where I stumble through an attempted explanation of how they work. And we bandsaw a Thundersky battery into pieces and take it apart
Thundersky Batteries Read More »
