Recent content by sidpost

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    I could use a little help for my friend with the JBD BMS selection with battery heater pad support

    Regarding the burn through the night, his smallest battery pack is 160Ah x 16 so ~20W/hr should be manageable. He has fish that will die in cold weather if he can't keep the power on. We have unreliable power locally, going 'off-grid' protects his fish. The new battery pack won't take cold...
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    I could use a little help for my friend with the JBD BMS selection with battery heater pad support

    My friend was looking at some YouTube video with a JBD BMS that had an output to drive a couple heater pads for the LiFePo4 batteries. It appeared the heater pads that were attached to sides of the batteries were connected directly to the BMS. Searching Ali Express has turned up some BMS...
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    Wind generator with solar panels?

    As noted above, the voltage spikes from a Wind Turbine will destroy your Solar components if you don't have the parts in place appropriate for it. My friend runs a similar Wind Generator and has a "special" charge controller that dumps the power into a large 48VDC lead-acid battery system since...
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    Our NEW GO-TO LiFePO4 vendor...09.20.21

    Lost in translation apparently.
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    Our NEW GO-TO LiFePO4 vendor...09.20.21

    She can not reply via this website, if you still want to order from her, please just contact Jenny Wu. Our company has rules, same customers can not have two sales.
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    Our NEW GO-TO LiFePO4 vendor...09.20.21

    I never got a response from that email address. The other one was generally answered in about 2 hours. My credit card payment was handled through the other email on Alibaba.
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    Our NEW GO-TO LiFePO4 vendor...09.20.21

    I bought 32 CATL 302Ah batteries from Jenny a while back and tried to order another BMS from Doncan later but, the order was canceled because they have a non-compete clause as explained by Doncan.
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    Our NEW GO-TO LiFePO4 vendor...09.20.21

    Docan is a separate company from Jenny. Jenny only accepts bank wire transfers or credit cards processed on Alibaba. Jenny's products can be picked up at the Docan Power storefront but, they are effectively like a drop-off site for Amazon, FedEx, or UPS.
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    Wanted: Pure sine wave 48VDC inverter (only) > 2,000W

    I have a JBD BMS system for the LiFeP04 batteries so, tying that back to the Inverter is a good idea. Regarding high-frequency inverters, I'm really thinking a low frequency is best for a lot of my loads. My welder runs at a ~10% duty cycle so a low-frequency inverter seems like a much better...
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    Wanted: Pure sine wave 48VDC inverter (only) > 2,000W

    I have looked at the Midnite Solar DIY models which are as you describe. Not a total deal breaker but, my experience with Chinese Charge Controllers has generally been bad. That's why I don't run them on anything that matters and so far have only run Samlex PST series inverters. 1500W is just...
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    Wanted: Pure sine wave 48VDC inverter (only) > 2,000W

    I can get another Samlex PST-1500W 48Vdc inverter but, I'm really looking for something bigger and low frequency to tap my ~35Kwhr of usable battery. High frequency is nice but, the durability of low frequency is attractive on its own in addition to its surge capacity and dealing with sustained...
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    EV's and Batteries

    The backing on the panels we have had in service for ~15 years are reaching their end of life. I expect the acids generated to start cutting traces in a few years. The studies we have seen, suggest the new bifacial panels will last 30 years or more in accelerated tests. Ask me again when I'm...
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    EV's and Batteries

    This ignores the issues of sourcing raw and scarce materials and their costs and impacts on the Earth. Just look at the Atacama Desert as one example of an impact most EV drivers are oblivious to. If all you consider is the cost of energy without any other impacts, then more efficient energy...
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    Our NEW GO-TO LiFePO4 vendor...09.20.21

    Regarding LiFeP04 batteries, I'm glad I got some before they went out of stock. The ones available today suggest when the ones I bought return to the marketplace, they will probably be more expensive than I can reasonably afford.
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    EV's and Batteries

    I lived with a little Kawasaki KLX-250S for ~6 months in my mid-30's and I could pack a week's worth of groceries in one trip. The eggs though had to go in a camping egg-crate to keep from breaking them.
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