When you tested the battery did you do what is called a load test?
https://www.2carpros.com/articles/car-battery-load-test
If you just checked voltage on the battery, it can show good voltage but it can't carry a load which is why it will only start with a jump and keep running with a jump because you are basically just running off the other battery.
I suspect the battery is the issue so just stop by a parts store or take the battery into the store and they can load test it. If it is newer then it may be covered under the battery warranty depending on what this is. If you contact the supplier or battery manufacturer they can tell you more info about that.
Let me know what you find. Thanks
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Monday, April 6th, 2020 AT 1:49 PM