LiMnNi and LiFePO4 Batteries Technologies
I was on battery space.com and searched this forum. There are only a few different people using this technology relative to the majority using NiMH and more common Li-ion batteries.
It seems the prices are very competitive with the more established technologies.
The LiFePO4 batteries appear to be a bit lighter, an advantage for small packs worn on a helmet.
The LiMnNi are higher capacity in one cell 3.7V at 4000mah
Is there a reason more people are not using these for batteries/packs???
The 4000mAh LiMnNi cell ( 26650 ) is about the width of a C-battery ( or Dinotte 200L if you may ) but as long as a standard Li-ion 18650. It weighs about twice as much. In a nut shell; two standard 18650's running parallel have a longer running time and a flatter more compact profile ( if but a bit wider). not to mention cheap 18650's can be had for as little as $4 a cell.
Originally Posted by fujio001
Still, it would interesting to see some DIY builds using the 4000mah LiMnNi. Would also be interesting to see some custom torch builds. A P-7 torch ( D-bin would be nice ), custom machined to hold the 26650 cell and still use a standard bike torch holder would no doubt find a niche of potential buyers who like self-contained units and longer run times.....Make it and they shall buy...
IMO, the 4A LiMnNi is impressive.