Failed Batteries & Jump Start Boost Pack Question

[morsetaper2]

My last two battery failures have gone something like this:

Both times car runs/starts perfectly fine, battery is nearing end of, or maybe just past its warranty period. We're in warm weather months, all is normal. Starts fine, battery appears strong and normal.

#1 Failure: One time drove to grocery store, was in the store 15-20 minutes, come out, start the truck, turn key, hear a click, and nothing. No lights or anything. Got somebody to give me a jump, still wouldn't start. Left jumpers connected holding donor battery engine at fast idle for couple mins in attempt to charge battery. No go, still totally dead.

#2 Failure: This latest time back in September, I came home parked in driveway at home in eve. Go into house for eve. Come out next morning, go to start the truck, turn key, click, nothing, totally dark, no lights. Nothing. Put my battery charger on it, wouldn't take a charge. Totally dead.

Both times, new battery was needed. I'm assuming each time a cell in the battery dropped out. Or maybe Accumulated debris in battery shorted the battery, or a plate broke away inside and shorted battery. Who knows. Just some sort of catastrophic failure internal to the battery.

Since jumper cables and battery charger didn't help in each case. Is it fair to assume one of these battery jump/booster packs wouldn't work either to start car were batteries have internal failures to the point they are totally dead?

 

[alwaysFlOoReD]

Both times the description you give leads me to believe a bad battery cable connection, could be either +ve or -ve, even bad corrosion under the insulation. That being the case, a jump pack would not help.

 

[morsetaper2]

Definitely 100% NOT a battery cable connection or corrosion issue. Both times the battery had failed internally causing the sudden no start/won't take a charge condition and needed replacement.

 

[alwaysFlOoReD]

Definitely 100% NOT a battery cable connection or corrosion issue. Both times the battery had failed internally causing the sudden no start/won't take a charge condition and needed replacement.

Then a jump pack would not help.

 

[morsetaper2]

Then a jump pack would not help.

Kinda what I figured.

 

[alwaysFlOoReD]

I was thinking about this. It may actually start but without a battery you might get runaway charging and cook the alternator regulator at the least. A good battery is an integral part of the charging system. If the battery is bad it can lead to making the alternator bad too, and vice versa.