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Open Roads Forum  >  Tech Issues

 > Walmart 27DC….80 or 109AH?

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mooky stinks

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Posted: 04/08/22 06:55pm Link  |  Quote  |  Print  |  Notify Moderator

Thanks to everyone for the info! I learned something today.[emoticon]


2020 F150 XL Screw 4x4 6.5”box
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valhalla360

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Posted: 04/09/22 09:58am Link  |  Quote  |  Print  |  Notify Moderator

KD4UPL wrote:

it's called the Peukert effect


This is the answer.

Basically, the higher the amp draw, the lower the amp-hr you can expect. Therefore, they need to define the amp-hrs in terms of the draw. 20hr rate is basically 5% of amp-hr rating which is fairly reasonable for a house battery.


Tammy & Mike
Ford F250 V10
2021 Gray Wolf
Gemini Catamaran 34'
Full Time spliting time between boat and RV


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