Walmart 27DC….80 or 109AH?
I ordered 2 27DCs from the Walmart website yesterday. The description stated an amp/hr rating of 109. When I picked the batteries up they had hold stickers on top with my name etc. When I got them hom...
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Just about all Group 27 batteries are, give or take, about 75 amp hours. Yours are 80 so that's on the upper end. Rating them with a 20 hour draw is the industry standard.
A manufacturer can rate them at any draw they want for marketing purposes. Apparently yours are about 109 AH at what is roughly a 100 hour rate. I suspect if you tested them at an 80 amp draw you might only get 1/2 hour making them 40 AH at that rate.
All the numbers are correct, it's called the Peukert effect if you want to read all about it.
Basically their marketing guys used a non standard number to make the advertising look better. It's not wrong, just a little sneaky.
A manufacturer can rate them at any draw they want for marketing purposes. Apparently yours are about 109 AH at what is roughly a 100 hour rate. I suspect if you tested them at an 80 amp draw you might only get 1/2 hour making them 40 AH at that rate.
All the numbers are correct, it's called the Peukert effect if you want to read all about it.
Basically their marketing guys used a non standard number to make the advertising look better. It's not wrong, just a little sneaky.
