diy solar

diy solar

Recent content by crozen

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    Inverter DC input minimum voltage too hight for battery pack

    Well, i don't want to make an off grid but i was wondering if there is a way where i can use that inverter and also store energy on the batteries and powering the house from the batteries too.
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    Inverter DC input minimum voltage too hight for battery pack

    Yes, but the inverter should be connected to my battery pack, right ? So this 100V DC input should be for the battery pack... Or am i wrong ?
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    Inverter DC input minimum voltage too hight for battery pack

    Hi guys. I have a very interesting second-hand solar panel kit for cheap. I have some questions. I want to store the energy in my battery pack 12v but i can make it to 24v. The big problem is that the inverter has a minimum DC input of 100v (220v nominal). The kit is huge : 24 panels of 235W...
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    Cells in series and parallel at the same time for balancing and use ?

    Should i do a top balancing of the 3 cells and the super cell too ?
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    Cells in series and parallel at the same time for balancing and use ?

    I have a cell of 50Ah capacity (not new, real capacity is 45Ah). This wiring ? At least, all to 3 others cells will now be used at full capacity right ?
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    Cells in series and parallel at the same time for balancing and use ?

    Hi, I have a LiFePO4 4S 12V "100Ah". One cell has much less capacity than the others. It has 70Ah while the others 90Ah. I'm fine with it but i was wondering if i could do something. I know that the best solution would be to buy another cell with more capacity. My issue is that the weak cell...
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    Charging NiMH cells with a bench power supply ?

    No, is a said it in my previous post, the charger destroys your cells !! because they are putting too much heat... For example the cheap Liitokala S8 charger has 300 ; 500 ; 700 ; 1000 ; 2000mA current. 300 mA for an AA NiMH is ok but when you try to charge an AAA 800mAh capacity with 300mA, you...
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    Charging NiMH cells with a bench power supply ?

    What do you think about the timer ? If i charge a 5.8Ah cells in parallel at 580mA for 10 hours, Is this a good indicator to stop ? How reliable is it?
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    Charging NiMH cells with a bench power supply ?

    Here is my final feedback. When you can't set the current yourself in a smart charger, this is so bad because you are not charging the battery at C/10. I think that is why my batteries were so hot in the smart charger because of too much amps delivered (C/2). As we know, there is a thermal...
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    Charging NiMH cells with a bench power supply ?

    Do you mean that there won't be a drop in current when the voltage reaches the one I set ? The same as on lithium/lifepo4
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    Charging NiMH cells with a bench power supply ?

    Hi, 1.a) Can we also charge a NiMH cells with a bench power supply as a lithium cells ? I put 2 AA and 2 AAA NiMH (2500 + 2300 + 800 + 800mAh) on charging in parallel. They all were empty. I'm charging them on constant current at 0,350mA (so 1/10 capacity) and i set a maximum voltage to 1.55v...
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    How to determine the current from AC to DC ?

    Hi guys, I have a basic question. When a switch is rated for 30A 250 VAC max, how do you calculate how many amps can it handle for 12V DC ? If i go for 250*30 = 7500W There is no way that the switch can handle 7500/12=625A. So how do you convert from AC to DC about the electric current ? Thnx
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    Top Balancing "How to"

    i showed them all the pictures, but that was their answer. I also have put the link from this thread to show them what we are talking about.
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