Originally Posted by ATA_Thrash

Gel cells need to be charged at a very low amperage the wall chargers are usually .6 amp for 14 hours if the battery is discharged. I use my pirana to charge mine at .5 amp and a peak of about 10 mv. U can use 1 amp in a pinch, but u will get a better charge at .5 amp. U can use Ni or Mh settings