engine will not run unless using a booster battery, and will not hold a charge on 2000 Ford Ranger

i just replaced the alternator, winshield wiper/ multi cintrol switch, and a few minor parts
i had the battery tested and it was good
it will start with a jumper battery but when i remove the cables it dies
ive gone through every fuse but still no joy
im thinking it could be the fusible link but could not locate it
the cables are good and tight

1 answer 6 comments
IF the battery tested good why do you have to jump it to crank it? Also when tested at the battery what is the alt. output?
Can leave jumper hooked up to test. Clean cables to start with. Do you have those repair terminal ends on the cables?
have to jump because it has sat for over a month when the alternator failed
still stock cables no repair ends
the battery is only a year old
i was worried about checing the voltage with the jumper hooked up because i thought it would read the other cars voltage
Though you were using a jumper box. Charge battery with a charger then check alt voltage. If battery sat long enough to become completlely discharged in freezing temps. it is shot!! That fliud in a battery when in a fully discharged state is WATER and it will freeze warping batt. plates. Had any temps. cold enough to make ice in a cup of water?
it hasnt been under 34f here for the winter and the nearest place with a cahrger is 20+ miles away
ill hook the car up to it and let it charge tomorrow
im going to recheck the wiring as well i might have missed something
ill ahve the battery retested this weekend as well and pull the cables and recheck them
Next week a cold snap is headed your way! AccuWeather. No lower than 34 this winter, nice!
found the fusible link and tested it it is dead and located easily on the side of the main power distribution box
now ill still test the battery and the cables again just to be sure
thanks all of the help
Cool!