Good Sam Club Open Roads Forum: Tech Issues: Walmart 27DC….80 or 109AH?


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mooky stinks

Cicero,NY

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Posted: 04/08/22 06:55pm

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

2020 F150 XL Screw 4x4 6.5”box
3.5 ecoboost Max tow HDPP
7850 GVW. 4800 RAWR
2565 payload

2020 Cougar 29RKS 5th wheel

valhalla360

No paticular place.

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Posted: 04/09/22 09:58am

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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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