Join Date: Aug 2009
Location: Sudbury, Ontario, Canada
Sounds like your alternator might not be charging the battery.
Easy test; start (or in your case-boost) the car, remove the positive battery connection while it's running and.........
if it dies, the alternator is not supplying power and needs to be fixed.
If it continues to run, there may be something causing a power drain and discharging the battery.
Leave the car parked overnight with the battery disconnected. Pop it back on in the morning and see if it starts normally. New batteries can recover from a discharge overnight.
64 Saab 96 Monte Carlo 850 clone, 73 1800ES, 74 Land Rover Series III, 80 Mini 1380, 04 Jeep GC Overland & 2010 Nitro