DIY ESS - One Year After Voltage Check

I have been using these 8 CALB CA180FI LiFePO4 cells over the last year with No BMS and they are still perfectly in balance ! They have been Bottom Balanced once and slightly under charged. Nothing more :-)

http://www.diyesskit.com




Special thanks to Clement for filming his dad's stuff 

DIY ESS - LiFePO4 CALB CA180FI Voltage Check

As I was moving my ESS upstairs one month ago,  and split the CALB CA180FI battery pack in pairs, I shot another small video doing a cell voltage check, and as usual, they are all in balance ...



The ESS battery pack is now charged and discharged fully in winter, using the low cost electricity provided by our energy provider TOU - Time Of Use - to charge, and discharging into our home grid during peak hours, mostly for heating, cooking and lighting

eHonda Electric Motorcycle | The Story of an Electric Motorcycle Conversion

This morning, I discovered that someone came to my blog post on Bottom Balancing from a new source: The Electric Motorcycle Blog from a Finnish guy ...



And guess what : He is using the Bottom Balancing too in the building process and daily use of his converted bike



Check out his beautiful machine and very detailed blog !

PS: I have a feeling he is watching EVtv too ;-)

Go visit his Blog here : http://electricfinn.wordpress.com

Also in his Blog, there is a recurrent reference to this other Finnish Blog and this post on Bottom Balancing: http://kWsaki.blogspot.fi 

LiFePO4 Battery Charge Method - Updated with video proofs

I just updated the most popular post of the blog, on LiFePO4 Battery Charging, with the 3 videos showing the cells voltages, always in balance - at the same level -, performed in March, May and July 2013

Take a look at the very bottom of the post here : LiFePO4 Battery Charging Method - Don't Ruin your Expensive Cells !

=> Conclusion: It works: All the cells are still perfectly in balance after 6 months ...