Recent content by Steveh27

You need to look at my earlier post where I show where the temp sensor went between the 2 batteries, which are tight together. It is only a little below the top. The temp dropped because the thermo/controller shuts off at 45. Then the battery temp will drop (if the air temp is still cold)...

Jim, Here's what yesterday morning showed, It couldn't cycle as it got too warm. Batt temp Air temp 7AM ---- 30.3 --- 27 I switched it on 7:30 --- 32.6 --- 27 8 --- 34.8 --- 27 8:30 --- 37.1 --- 28...

I used thinner wire, do not know what gauge.

I was going to check it and write down the data, but did not check enough. I think I turned it on around 7AM, but the temp in the box had not yet dropped below 38. By 7:45 it had turned on with temp then at 37.5 AT 8 AM it was 38.7. By 10 it was 44.5, off and going down. At 11:20 it is...

Thanks. It took a lot of planning and work. Here's a modified pic of the batteries before installation. The green line shows where the heat pad is and the yellow on the top middle shows where the sensor went in between them.

I finally finished the install of the Ultra Heat pad and parts. First I reinstalled the 2 batteries from storage. I barely can get the battery box lid on with all the wiring. I forgot to take pictures of the open box with the install. The previous pics showed the batteries in the box. I did...

The pad is made for a battery. The model is Z-25N60-BAT832-13V-15W. The Ultra Heat label installation instructions under 3. state how to adhere it to a battery. So I should be safe. DO you think I should add the on/off toggle switch?

I hope they aren't too hot. It is only 15 watts. And with the temp thermostat controller with the same ranges as you it should be OK. I guess it depends where I put the temp sensor.

I just joined after reading this thread. I have a Class B motorhome with a small battery box under the van. I got a Manufacturer in China to make two 100AH LFP batteries for me. They claim it has a smart BMS to shut down charging below freezing, but... I am worried about driving below 32...