Terry wrote:
On Jan 18, 5:47 pm, ransley wrote:
On Jan 18, 4:16 pm, Terry wrote:

I have a Black and Decker 450 amp jump starter.
The car battery was dead because the lights were left on. I wanted to
use the car in the morning. I took the battery charger and put it on
the battery, the night before, intending to trickle charge it.
The next morning the car would not start and there was no juice in the
charger.
I am guessing that the jump starters are not intended to trickle
charge, although I don't see why.
Its a jump starter, booster, not a charger, and by B&D not known for
quality, buy a 110v charger.

It is an emergency jumper/pump intended to be kept in your car and
used on the road where there is no 110V

http://www.blackanddecker.com/Produc...roductID=15582
....
Which says its output is 450A instant, 300A/5 sec. The latter
translates to roughly 0.4 A-hr which is a spit in the breeze trying to
recharge a fully discharged battery. You basically got one shot to
start a vehicle w/ it -- which, often may be enough.

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