I have no economic interest in this of any kind.
I just ordered a bunch of these 24v 150 watt heating pads for use with my EG4 batteries. At $6.99 each in bulk, they are a steal. Doesn't get too cold here, but it does get down into the 30's F and I want a way to keep my batteries warmer than that. Needs a thermostat etc., but otherwise looks very useful...
I just ordered a bunch of these 24v 150 watt heating pads for use with my EG4 batteries. At $6.99 each in bulk, they are a steal. Doesn't get too cold here, but it does get down into the 30's F and I want a way to keep my batteries warmer than that. Needs a thermostat etc., but otherwise looks very useful...

7x3 24V 48V 150W Silicone Heating Pad Hi-Heat Made In USA Battery Lifepo4 Li-Ion | eBay
You can series 2 of these together and they will work with 48v applications. These heating pads were recovered from 24v industrial batteries. This is made specifically for lithium batteries but you can use these for many other uses.
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