![]() The wheel, for example, is far older than the battery and I think it still has a place in the world. Both still have a place in the world and to know which is right you have to do the math, not use platitudes or put labels on people to downplay their opinions. ![]() Just because something is new doesn't make it a panacea to be used in all cases. Just so happens I have built a DIY lithium battery and will be installing a few kW of Lithium in the upcoming months.īut ByTheBay's purpose is different, there's no need to pay for 3000 cycles if they will only ever use 20. Lithium only seems more complex because DIYers are making them from scratch and have to figure out all stuff out (like proper charging voltages). You can get drop-in replacements that look like lead-acid batteries and chargers for them same as lead and dead simple to boot. Lead's heavy, that'll have to be some shelf! Not endorsing either product, don't know anything about them but wanted to give some ballpark pricing. Amazon also has a 100 Ah Renogy sealed gel for $ 216 and an AGM for $ 203. That's about the same price as the Sinopoly DIY Will likes on Amazon. A drop in lithium battery with BMS should have a low voltage cutoff built in.Īmazon has a 40 Ah lithium drop in for $379 with a 10 yr warranty with everything needed except for low temperature. With a lead acid you'll probably want to include a low-voltage cutoff that you can program to meet your needs (if not, when the voltage gets low enough the pump will stop but might not stop draining the batteries doing unnecessary damage). If you want to stay above a 50% DoD, then think about lithium. A 100 Ah battery at 16 amps rate is really only ~87 Ah (see the battery FAQ if you're not sure why), which if you're willing to suck it dry and accept the damage is ~5.4 hrs. ![]() Click to expand.Thats 40x12x.9=430W, which a 16 amp pump would drain in ~2.2 hrs. ![]()
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