China Aviation Lithium Battery

Life in LiFePo4 – Cycle Life and Attenuation Data

16 Comments / mjrickard / June 4, 2010

Kind of a late blog entry. Busy week with Rickard Electric Speedster design. The May 28th show rounded up a lot of little parts such as the accelerator – with a little valet function box I refer to as “daughter mode.” [jwplayer file=”news052810-1280 – iPhone.mov” hd.file=”news052810-1280.mov” image=”http://media.ev-tv.me/news052810.jpg” streamer=”rtmp://s3jgrp4mv5fnqx.cloudfront.net/cfx/st” provider=”rtmp” html5_file=”http://media.ev-tv.me/news052810 – iPhone.mov” download_file=”http://media.ev-tv.me/news052810-1280.mov”] The basic […]

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April 16 Friday Show

20 Comments / mjrickard / April 21, 2010

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.

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OK. HERE IT IS. SAG. VOLTAGE. MORE

34 Comments / mjrickard / December 22, 2009

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

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Sky Energy’s Blue Sky Cell Data

11 Comments / mjrickard / October 8, 2009

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

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