Solar Panels For Homes

What kind of battery do I use for a solar powered heating device?

I’m making a solar powered heating device which consists of a solar panel connecting to a battery of some sort by wires. The solar panel’s heat is turned into energy and stored into the battery, but at the same time the battery is connected to another set of wires which lead to a metal disk which is where the heat comes from. I would like to know what kind of battery is like that, that can be connected by 2 sets (2 wires on each set, positive and negative) and have energy stored in it and be transferring the energy at the same time it is being stored. This way so that you can use the heating device at night time.
So which battery do I use and where can I buy it? Online stores are fine as well. Thanks!
Yes, obviously the type that store energy, that is what I said. I mean what model and type of battery, please be more specific and don’t post stupid answers please.

What you suggest is not a commonly done thing. By the time you store solar energy in a battery, and get it out again as heat, you may have thrown away 95% of the energy. Also, heating applications take a lot of energy, so if I had (say) a 200-watt panel, I would not expect to do more than warm a cup of coffee for a few minutes with it.

To answer your question about batteries, the standard battery used for storing off-grid electricity is lead-acid, AGM type if you can afford it. If cost efficiency is not important, you can get lithium oxide batteries that are intended for electric bicycle use. A 0.3 kWh battery of that type costs about $500, 10x what a lead acid would cost, but it will be smaller, lighter, and you can drain it flat without harming it. You can find such batteries by Googling “electric bike battery.”

If your goal is to store solar heat, it would be cheaper to have a very large collector, heat water, and pump it into a large, well-insulated tank.

Update Solar Air Heater & LED Lights from solar panel & 12v Battery

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