2 out of 2 batteries Failed

I recently purchased 2 of these batteries for use in a smaller electric RC aircraft. First battery wouldn't charge at all, a mid level charger with charge, discharge and storage features... wouldn't even start to charge this battery on several attempts. The second battery showed it took a charge fully, however, when placed in the aircraft it did not operate the motor or the ESC properly therefore was unusable. I then used one of my older different brand batteries and it worked flawlessly. I am contacting the company now to try and recover from this purchase. More to follow

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