How long should a brand new dead battery take to recharge using a 6 volt "tender" trickle charger?
Sometimes up to a couple days. Depends on battery size and condition.
Read the trickle charger instructions. I have seen some trickle chargers that will NOT charge to a dead battery.
some charger, even the trickle types will not send out a charge unless it is picking up a correct connection and a slight charge. if your battery is dead, dead, dead, the charger may not do anything.
my golf cart charger is like that and if my batterieds are totally dead, I have to use an old "dumb" charger on each battery to give it some charg and then my "smart" charger will pick up the amps and start doing its thing
In reading Kevin Whelihan's post, a couple above this one, I have had pretty much the same experience as he mentioned:
I've never tried to charge a completely dead battery, but with a battery that's run down so much that it doesn't have enough charge left to turn an engine over, I can connect the trickle charger that day, let it charge all night, and all the next day, and the morning after that, the red light has turned to green, indicating a fully charged battery. Mine charges at one and a half amps, and slow as that is, even with my very limited knowledge of anything electrical, I think that is a very "gentle" and safe way to charge up a battery. Anyway, FWIW,....harold
If this was a brand new dead battery, frankly I'd be taking it back to where you got it and DEMAND they supply you with a good fresh, properly charged battery! Sounds like you were ripped off to me.
A 9 v flashlight battery can be used as a voltage source to 'fool' the 'smart' charger to begin charging a flat battery. Takes just a touch to get it started and it stays engaged until charge is complete. jb
I like the technical info that Deltran Battery Tender has on their website. This link should provide you the answer you're looking for.