Retirement is not all it is cracked up to be, and when an opportunity comes up that is just too good to pass up it is a good reason to come out of it.
This is why I have agreed to become the US distributor for LifeBatt battery systems for ebikes. For those unfamiliar with them, these are 10 Ah cells using the same LiFePo4 technology the A123 cells use, with cathodes made in the same factories as A123, assembled in Taiwan.
These larger cells are much easier to interconnect, using threaded studs on the ends, avoiding the need to solder or weld tabs.
I have personally done quite a bit of testing, some of the results i have posted, and more will follow. There is also independent testing going on right now at Sandia Labs that should be released by the end of January. LifeBatt testing indicates that after 2300 cycles to 80% DOD the cell impedance has grown from about 5 milliohms to about 6.
The best part is they will provide a 2 YEAR WARRANTY on the cells if used with a simple low voltage cutoff bms like the one Gary and I came up with. As far as i know they are the only company offering this kind of warranty.
Toyota has agreed to buy a significant portion of their manufacturing output, so that is a pretty good indication of the quality.
No more hacking up DeWalt packs to get A123 cells with no warranty, and the cost is fairly competitive with what we are paying for cells harvested from new DeWalt packs purchased on ebay for $100.
I am offering the cells right now for $50 each, plus shipping from L.A. The price will eventually come down, but not for several months. For those of you interested right now, contact me off-list.
I will dedicate space on my webpage to the cells, so in a couple of days i should have plenty of photos and discharge curves on bobmcree.com
This is why I have agreed to become the US distributor for LifeBatt battery systems for ebikes. For those unfamiliar with them, these are 10 Ah cells using the same LiFePo4 technology the A123 cells use, with cathodes made in the same factories as A123, assembled in Taiwan.
These larger cells are much easier to interconnect, using threaded studs on the ends, avoiding the need to solder or weld tabs.
I have personally done quite a bit of testing, some of the results i have posted, and more will follow. There is also independent testing going on right now at Sandia Labs that should be released by the end of January. LifeBatt testing indicates that after 2300 cycles to 80% DOD the cell impedance has grown from about 5 milliohms to about 6.
The best part is they will provide a 2 YEAR WARRANTY on the cells if used with a simple low voltage cutoff bms like the one Gary and I came up with. As far as i know they are the only company offering this kind of warranty.
Toyota has agreed to buy a significant portion of their manufacturing output, so that is a pretty good indication of the quality.
No more hacking up DeWalt packs to get A123 cells with no warranty, and the cost is fairly competitive with what we are paying for cells harvested from new DeWalt packs purchased on ebay for $100.
I am offering the cells right now for $50 each, plus shipping from L.A. The price will eventually come down, but not for several months. For those of you interested right now, contact me off-list.
I will dedicate space on my webpage to the cells, so in a couple of days i should have plenty of photos and discharge curves on bobmcree.com