Hey everyone! I know this might sound a bit silly, but I'm on the hunt for the best price-to-watt/hour ratio for 12/24V batteries for a small solar project I'm working on. I have a 200W solar panel and I'm looking to maximize storage without breaking the bank. Since this is more of a fun engineering project rather than a way to save money, I really want to get the most storage for my dollars. Any suggestions or experiences you can share while I do my research?
4 Answers
Thanks for the info! I’m leaning towards a 12V 100Ah battery since my inverter is compatible. I plan to run a bitcoin node plus a small miner at about 15W and 17W respectively. I'm excited to see how it performs in the Alabama sun, especially since I’m wiring it with room for future expansion. Cheers!
You can't go wrong with Dumfume batteries! They have a killer deal on their 24V 100Ah model. I snagged one for around $310 plus shipping. They do have a 12V option, but it's currently sold out. Keep an eye on it though; it might come back soon!
Just a heads up! With your 200W panel, you could potentially power a 25W load for 24 hours, equating to about 600Wh depending on the weather. If you're aiming to run a higher load, just remember that bad weather can impact your power generation. If you’re thinking about a 33W load for 3 days, you’ll need around a 2.4kWh battery. Those are pretty accessible and under $500 usually.
For DIY enthusiasts, you can make a setup for about $200 with a 100Ah 12V or a 50Ah 24V battery. Just make sure you factor in your battery management system (BMS) when you're building it! It's a solid choice if you're looking to save some money.
What kind of BMS are you going with for that setup?