Good Sam Club Open Roads Forum: DIY Li Battery Heater...A REAL TEST!


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LittleBill

Scranton, PA USA

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Joined: 08/29/2003

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Posted: 12/28/22 09:24am

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be aware they now sell bms's with heating ports for DIY packs. people say they work well.

StirCrazy

Kamloops, BC, Canada

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Joined: 07/16/2003

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Posted: 12/28/22 06:28pm

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Rbertalotto wrote:

DIY Battery Heaters...A REAL TEST!...got down to 7F degrees last night. At 7am the battery compartment is at 35 degrees. Controller is set to turn on at 35F and off at 38F........The batteries are at 90% on the monitor.....Working GREAT!... http://rvbprecision.com/rv-projects/lithium-battery-heating-project.html

http://rvbprecision.com/rv-projects/lithium-battery-heating-project.html

well done, but like others I question the wattage of the heater. if you went with a hard sided rotomolded cooler you could probably get away with even less wattage, as the usage of the battery would probably generate enough internal heat to keep it good and your pads would only be a back up. but you do sacrafice a bit of portability that way.

Steve

2014 F350 6.7 Platinum
2016 Cougar 330RBK
1991 Slumberqueen WS100

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