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Freeman

@freeman

67 Following
32 Followers
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Freeman
@freeman
I have already built one, see my feeds
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Freeman
@freeman
As electricity storage for solar panel
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Freeman
@freeman
Everything goes well, it is not exploded, it can charge at 7 KW at most, meets standards for household charging pile. https://i.imgur.com/0J4VCUZ.jpg
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Freeman
@freeman
Borrowed a Tesla Y from friend, she asked whether it would be exploded, I said let’s try it https://i.imgur.com/leERs9V.jpg
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Freeman
@freeman
Then I try whether it can charge Tesla, built a charging pile https://i.imgur.com/MW2aPTX.jpg
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Freeman
@freeman
Built a wooden house for the battery system. Look at the up-right corner, YES, it can also drive a Bitcoin miner, Ant Miner S19! https://i.imgur.com/5qMEUKf.jpg
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Freeman
@freeman
Connected with 96V - 220v battery inverter and MPTT controller, it finally works after 1 month hard working. This is my first solar-powered coffee, the best one ever. https://i.imgur.com/QRfvCAq.jpg
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Freeman
@freeman
It requires carefully packaging and insulation. https://i.imgur.com/UTXNdGu.jpg
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Freeman
@freeman
Hand-soldered battery packs, each battery cell has capacity of 234 AH * 3.7V, two packs like this, 26 cells connected in series. https://i.imgur.com/y46WgYt.jpg
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Freeman
@freeman
A big step to off-grid living, 6kW solar panel with 20 kWh ternary lithium battery storage, all build from scratch, only 1/6 cost compared to Tesla Powerwall. https://i.imgur.com/cZPcuXv.jpg
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Freeman
@freeman
One of my friends save Metamask seed phrase in Dropbox, she said U.S. companies wouldn't scan users' docs, because it's illegal. How do I persuade her that it's not the case ?
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Freeman
@freeman
到目前为止，还没看到中文消息，测试一下
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Freeman
@freeman
Finally got into Farcaster, this is best web3 app I have ever played, really love it. Thank @dwr.eth for invite.
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