Can we get some feedback on the Nano Tech Lipos Please

[pinkpanda3310]

The last I read Patrick say the 12s is further away than the 8s. Maybe it would be worth while getting a logger. Except that just draws out more time before you get more batteries. I don't have either battery your considering but I do have A123 which is similar to lifepo4. The high charge rate is a nice feature.