GB Industrial Battery - AH Ratings: 6hr rate vs 20hr rate
2018-11-26 · A current of 50 amps for one hour would be 50 AH at the 1hr rate; a current of 30 amps for 5 hours would be 150 AH at the 5hr rate. · AH ratings will vary with temperature, and with the rate of discharge. For example, a battery rated at 100 AH at the 6-hour rate would be rated at about 135 AH at the 48-hour rate.