diy solar

diy solar

Recent content by cypher2001

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    15AH LiitoKala 33140 LFP review and test results

    Did you try to charge the "bad" cells at all? Curious if they took a charge? Where did you buy them? Link?
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    Can these be real? LithPower 12/24v 280 ah, $50/piece Price seems too good to be true

    I requested pricing for shipping for a handfull. I received a stock reply with costs for 100ah 12V with LCD screen for 268.00/pc. The email had multiple other options as well. No real answer directly to my shipping question. My guess is that this listing is just bogus to harvest inquiries and...
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    Adding shore power to the classic 400 watt solar system

    When I wired up my camper, I used the following charger: Progressive Dynamics PD9145ALV 12V Lithium Ion Battery Converter/Charger - 45 Amp Additionally, I wired a power transfer switch to my setup which serviced to not only supply the charger when connected to shore power, but switched my AC in...
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    Adding shore power to the classic 400 watt solar system

    My experience with the IQ4 Module and IOTA devices is that it drops to float voltages after 120Minutes. This means that it can be difficult to fully charge depleted packs using this converter setup. This was confirmed by the manufacturer by myself and others. Even if you don't need the full...
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    Scream Power LiFePO4 12v 100ah

    I would still be cautious about that pack. Perhaps ask for documentation on ideal and max discharge on published papers or a link to the manufacturer. With that said, I can't help with any suppliers that might ship to Canada. Have you attempted any of the standard players on Aliexpress or...
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    Scream Power LiFePO4 12v 100ah

    The Amazon link mentions a 1C MAX discharge BUT then mentions a 20AMP max draw. I'm inclined usually to believe the lower values on these "generic" batteries. I've seen trolling motors pull 40AMPs so you may have a problem with this battery. Seems a large investment and you can probably make...
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    12VDC, 30A Smart Battery Charger for $40.

    Just so I’m clear, I’m saying the voltage matters. A 50amp 12v battery charger only pulls -5-6amps from a 120v AC line. Your 30amp 120v AC shore power should handle that with no problem and no tripped breakers.
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    12VDC, 30A Smart Battery Charger for $40.

    Don't confuse a 30A /120V with a 50A/12V. A 50A/12V converter should pull ~5amps at 120V. (It will be a little more because of losses, but its still small at 120V) If you have a 50A LIFEPO4 converter, you can still use that on a 30A 120V line to pull a full 50A/12V. On the original topic - I...
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    Alibaba vs. Globalsources

    I'll first knock on wood. I've ordered 100's (if not 1000 then close probably) of things from china over the years via Alibaba, Aliexpress, and Ebay. Not once did I have one rejected as counterfeit. Now.. Most of the things I've ordered were electrical in nature -- I wasnt ordering clothes or...
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    Voltage drop

    You are correct... the OP doesnt indicate battery chem. Should have started there.
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    Voltage drop

    While voltage on LIFEPO4 is difficult to use to calculate an accurate SOC, it can be used to determine at the edges. 13.09V is pretty low. Is the battery bank ever getting charged fully? If you fully drain those batteries, I don't think the solar will recharge them in a single day. Can...
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    Need help charge Lipo batteries using 10W panel

    Then you need to inspect the charge controller you have to see if it can support LIPO charge profiles AND ensure that its does not provide the LIPO pack too much amperage for your 3S pack.
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    Need help charge Lipo batteries using 10W panel

    I was also suggesting you do not use that charge controller that was included. It will not work for your battery type.
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    Need help charge Lipo batteries using 10W panel

    Unless your original description was incorrect, it will not work that charger is for 2s-4s. You are trying to charge a 1s probably at less than 3amps. I assume you can charge at 1c but it’s dependent on the battery. That charger would likely make your battery go boom. It’s important to know...
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    Battleborn vs Alibaba?

    Couple of things. The RAW cells in a serial configuration (4s. 3.2Vx4) will multiply the voltage to the same ~12V system but does not multiply the AH. You still have 280AH of storage. You also need to purchase a BMS, a battery box, cabling, etc to create a full battery. The battleborn is a...
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