Robotbirds - LPL-Fe Low Price LifePo4
The alternative modern battery technology to Lithium Polymer for R/C are Lithium Ion Phosphate . We have the high performance M1 cells made by A123 Systems the US company and also the lower cost alternative which are good for applications where the high charge/discharge of the A123 is not needed.
The difference is as follows
Charge 2c 4c
Discharge 15c 30c
Capacity 1200 & 2400 1100 & 2300
The capacity to weight ratio is about the same in the above cells. The cells are about 35% heavier that Lithium Polymer as and you need to up the prop size of cell count to compensate for the difference in lipo/lifePo4 specifications.
On the plus side you get a safer and a longer life pack, which is not as frail as, Lithium packs. For those of you still out there using Nimh packs, consider these as a replacement.
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