Nicely done. Congrats on building a offgrid house.
Chat My Off-Grid Solar Powered House Completed, Kam Watch
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 Nov 6 2019, 08:45 PM
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#1
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Senior Member
3,329 posts Joined: Jan 2003 From: Selangor  
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Mar 4 2020, 02:08 PM
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#2
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Senior Member
3,329 posts Joined: Jan 2003 From: Selangor
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QUOTE(spacelion @ Mar 4 2020, 11:49 AM) but do you really bother ? 500w very small wor. One day 3 sun hour = 1500kwh. Can only power 1hp aircond for 1 hour only.nowadays a lot of ppl have solar panel + grid tie inverter (from China) , total setup cost for 500W is around RM1.3k , just use to offset power consumption, is not to power your whole house.  However its still good as a beginner system. |
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Mar 4 2020, 02:13 PM
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#3
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Senior Member
3,329 posts Joined: Jan 2003 From: Selangor
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QUOTE(spacelion @ Mar 4 2020, 02:11 PM) its just offset only. dont plan to scale much. right now am experimenting with DIY battery bank Go youtube look for 18650 powerwall projects if you're comfortable with lithium technology. |
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Mar 4 2020, 02:53 PM
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#4
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Senior Member
3,329 posts Joined: Jan 2003 From: Selangor
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QUOTE(spacelion @ Mar 4 2020, 02:28 PM) i am , but that battery pack is a bit too much for me right now, i still have to play with BMS first. And BMS is pretty costly , a 16 cell BMS is roughly 1k and then slaving each pack to a main BMS is another level of complexity waaa what BMS you looking at? rm1k? USA product ar? |
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Mar 4 2020, 03:41 PM
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#5
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Senior Member
3,329 posts Joined: Jan 2003 From: Selangor
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QUOTE(ozak @ Mar 4 2020, 02:42 PM) Almost accidentally burn my finger. Yesterday I also kena burn wire case.During solder the minus terminal side, the long solder lead touch the bottom 18650 + side cell. While my finger holding the lead. Instantly the solder lead melt and my finger holding the lead feel the burning. Immediately flung away the lead. Lucky the lead act as a fuse. Otherwise will get burn mark.  Have to handle very very carefull for lithium. Was testing a 48v to 12v adapter, connected using 24awg dupond pin wire. Turn the electronic load from 10w to 100w and straight whole wire catch fire. Scary.  |
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