Battery light flashing..

[Naga Sadow]

I have a 2000 ranger with the 3.0 V-6. Well when i floor it and the rpms gets above 4k, the battery light flashs. This is a stock battery, would putting in a new battery fix this? I have a red top in my ex that i could transplant into the ranger when i sell the ex soon.

 

[TPLYNCH]

Probably the alternator. Mine would come on momentarily when I'd floor it. Eventually the alternator crapped out. I think the engine is drawing too much juice at high rpms for the alt to handle.