Probably (I say probably because without having it infront of me to check it then it's difficult to give a definate) just a broken balance lead on the Turnigy lipo. It means the lipo needs to be opened and the balance lead reconnecting.
With the Losi stuff it could be a weak lipo or the regulator may be faulty. Again it's difficult to say for definate without doing a few checks with a multi meter and load testing the lipo.
Are you running bigger servos than would normally be used or anything like that. Maybe the equipment you are powering is asking to much of the Losi gear.
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