This is an excellent battery. It looks to be constructed well. It has survived a few crashes. I also notice that it seems to have more than 2200 mah capacity. I land my tricopter when the battery gets to 3.5 volts per cell. On the charger it take a little over 2200 mah to bring it back to full charge. At 3.5 volt per cell a true 2200mah battery should take maybe 1900 mah to bring back to full charge. You get alot of battery for a good price.