1500 2w RAM 1999 won't idle

Help! After $600 in brake repairs in the last 3 weeks (speed/abs sensor, rear drums and pads, and today a new master cylinder), now the truck won't
start. Without a jump, the starter "flutters". With a jump, the truck will start, but as soon as the gas is let off, it dies, every time.
What is going on? Should I just drive it into the river?
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Have the battery load-tested... 10:1 it's shot
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