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Recent content by radio05

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    DIY HUAWEI R4875 70V~100V 0~50A 5000W

    Pricing is the monetary manifestation of the value of an item. It has no direct relationship with religion, politics, belief, or income. Moreover, the price is not equivalent to the selling price. I only set a reasonable and controllable price for the items I sell. It affects your interests. You...
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    DIY HUAWEI R4875 70V~100V 0~50A 5000W

    This is a good idea!
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    DIY HUAWEI R4875 70V~100V 0~50A 5000W

    hello!So hilarious Doctorbass, made in China is not synonymous with cheapness. This power supply is priced at $500-$2000 in Alibaba’s official channels. The workmanship and materials are worth this price. $400 is only a daily salary of 1-2 days in European and American countries. I don’t think...
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    DIY HUAWEI R4875 70V~100V 0~50A 5000W

    Thank you for your comments and suggestions. Pricing is actually a relatively difficult issue. It takes a lot of time to make modification tutorial videos and electronic version. The price of Bluetooth control chip and power supply continues to rise, and I have to keep the price within a...
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    DIY HUAWEI R4875 70V~100V 0~50A 5000W

    You can enjoy the free modification tutorial guide with the purchase of the kit and power supply, free Android or IOS APP download and use, currently there are Bluetooth version, Bluetooth and OLED coulomb meter display version, three-button coulomb meter control version, potentiometer version...
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    DIY HUAWEI R4875 70V~100V 0~50A 5000W

    The price of the retrofit kit plus power supply is temporarily priced at $460 or €388, including a brand new R4875G1 power supply with zero power-on time, a set of Bluetooth retrofit kits and international shipping costs, and the buyer bears the tax. If you need to buy a second-hand disassembled...
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    Emerson R48-3500e rectifier voltage adjust.

    If you release a new modification plan, please indicate the source. In addition, change the voltage separately without limiting the current, which may exceed the rated power and cause safety hazards. The complete modification must consider and pay attention to the original design requirements...
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    DIY HUAWEI R4875 70V~100V 0~50A 5000W

    Thank you for your reply. I am planning this matter in the near future, making modification tutorials, consulting and evaluating overseas transaction precautions and legal risks. In addition, this power supply is a product of a Chinese enterprise. Does the modification and sales require the...
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    DIY HUAWEI R4875 70V~100V 0~50A 5000W

    These are all lessons. The transformer was damaged during the disassembly process, which caused the subsequent work to be unable to continue, and the power supply was scrapped.
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    DIY HUAWEI R4875 70V~100V 0~50A 5000W

    The difficulty of modification is mainly due to the following problems: 1. Disassembly and assembly of transformers, 2. Rewind the transformer, 3. Disassembling and welding some SMD components, power tubes and filter capacitors. Most of the modifiers failed in the first step. The transformer was...
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    DIY HUAWEI R4875 70V~100V 0~50A 5000W

    Hello everyone! Seeing your messages, I know that everyone likes this modified power supply. There are kits and tutorials for this power supply modification, as well as finished products. I am currently considering whether to sell the modification kit or the finished product. This power...
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    Using 69.4v charger for LiFePo battery

    Finding the right power source for charging is the only way to ensure safety and battery life
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    Using 69.4v charger for LiFePo battery

    The highest voltage of iron-lithium battery is 3.65v, and the highest voltage of 15-string battery is 54.75v. Higher than the rated voltage will directly damage the battery pack and even cause safety accidents. It is not recommended to charge beyond the rated voltage and rated current, and the...
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    Emerson R48-3500e rectifier voltage adjust.

    Find and remove the patch resistors R621 and R625, connect a 22k adjustable potentiometer at both ends of the two resistors, find and remove the patch resistor R649, rotate the 22K adjustable resistor, a miracle happens.22K adjustable range of the adjustable resistance is 5v-60v. If you change...
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    What AWG wire for 52v battery?

    12AWG is very suitable。
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