droid1 keep rebooting...battery low

[shredhead]

my droid keep going in a cycle...the battery will get under 5% then it auto powers off...but the thing is...when i plug in the charger it auto turns on of course...so it boots..to under 5% battery...powers down...does the same thing...over and over..grrrr....please help...any work arounds...i can pull battery and i can power it up with it plugged...but..you know..that sucks..heh