Motor: satellite down gearing, 350 watts, rated @36 volts.
Pack: 40.2 volt 10 series by 7 parallel.
Lately the last 3 times I go up steep hill the battery wires, controller, and motor are hot to the touch, not burning but very warm and a heat sensor kills the power. As I sit half way up a hill waiting for it to cool off I have to disconnect the battery for it to reset. I always assist the uphill climb by pedaling as much as I can on seat not standing. I often check for the correct tire pressure. And my ebike is 100% throttle controlled but it's not easy modulating a throttle when you're pedaling vigorously.
This has only been occurring since I fixed my battery pack by replacing a defective parallel row 18650 batteries in my 70 battery pack. Since I fixed the pack my ebike has never been so torquey. I get the same top speed but it really throws you back when you floor it from zero like never before. The main reason I got this ebike was mainly due to living at the top of a hill.
I can't figure out what would be the best solution to fix this problem.