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Waterman

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Waterman last won the day on May 14

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  1. I also use that solder. It is Indian solder as far as I can tell. The company has offices in NJ and Karachi, India.
  2. Unless you live down here. I went out and looked at mine at noon. The 4 100 Watt panels on the shed were putting out 394 Watts at 78°. The 6 on the container roof, not so much. The ones on the container are nearly flat which works well in the summer. The 4 are hooked to a 30 Amp while the 6 are hooked to a 60 Amp MSB. The 60 Amp will cut back to float while the 30 Amp holds the load.
  3. Who forgot to pay the heating bill? And did you ship me back to Sean? It showed a temp on the unit of 41.5°. I didn't run it yesterday but it should have shown about a 38° temp. Only a 66% humidity so the unit should warm up without problems as the heat will dry that out.
  4. Sid, I checked mine a while ago and they were running about .5A on any cell that was being balanced without any charge going into them. I do have one set in the test battery that likes to go high on the charge if not reined in. The cells are rated at 4.2V but this one will charge to over 4.3 on the 4 cells. This is where the balancer is going to get its workout. The battery is currently undergoing a load test to see how many AH it will actually put out before the inverter ( UPower, not GS ) will shutdown. Starting Voltage under a 16A load was at 28.5. 25.5V after an hour and at 17AH. 24.9V at 72 minutes and 20AH . 24.1V, 17A load at 1.5 hours and 25AH. 23.1V at shutdown at 1:40:00 and 28.4AH. 615Wh out of about 715Wh in. About 86% efficient.
  5. Now that I've had time to play with my balancers, I've come up with a few questions. Sid: 1.) If you have a switch on the Amperage adjustment side, can it be used while the unit is powered to switch between 2.5 and 5 Amps? 2.) If you have two ( or more ) of them on the same cell, do they really need isolated from each other if on the same heatsink? 3.) If you have 3 on the same cell and heatsink as in 2 above, do they all have to be at the same Amperage setting or can they be a 2.5 on one, 5 on two for 12.5 Amps? Or combinations thereof to get 2.5, 5, 7.5, 10, 12.5, & 15A of discharge? The reason I'm asking is because I wired mine for a maximum of 15A per wire to the terminal strip and reached 15.4 Amps for short periods into the battery from the MSB controller. I was waiting for the 15A fuse to blow but it didn't. And I would need to possibly dump all the amperage from one cell if a set got really badly out of balance. On a different subject but still the same batteries. I ran a test the other night where I was drawing 70A out of the cells. At that rate it was burning 1AH per minute and managed to get 27AH out of 32AH available before the UPower inverter shutdown for low Voltage.
  6. Now that I started making my own panel, that would have saved me some costs and time. I did have a change in plans as instead of 8 of the batteries there are going to be 10. Each protected by a 100A fuse ( - ) and a 150A breaker ( + ). Then the buss itself will be protected by a 300A breaker on each leg. The breaker is to allow disconnecting without fuse removal and the batteries are all hooked to the fuses and breakers thru 175A Anderson style connectors.
  7. Sid, the solution is for you to go to an oil cooled unit with a radiator on top. That way you could heat your home when its cold out.😉 And I have to agree with dickson, why use two different size wires on the output?
  8. I bet I could get Puff to visit if I had all the cells hooked up without a breaker on them. The total surge from them on just the SPIM08H cells could reach 12,000 Amps and a continuous rating of 6,400 Amps.
  9. LG had a major problem with the cells they sold GM for the Bolts. Owners were warned not to park their cars in a garage as they could end up with a battery fire. jehugarcia did a test on the cells like I'm working with and in his shorted battery test it was 352 Amps for 30 seconds before the battery popped. Thermal camera showing only the temp of boiling water when it did it. But no fire. That is a 50C test which no one should ever do on any of the Lithium batteries unless they take proper safety precautions as something IS going to give. Mine will have a 150Amp breaker on one leg and a 100 Amp fuse on the other and in theory, I could safely pull 800 amps as I have 4 cells in parallel in each battery. If the 6K GS inverter ever hit that high a load, Sid would have some troubleshooting to do on a fried unit.
  10. So what is the latest on it? What was the transformer? When I bought my U-Power units they said from California but the units were actually shipped direct from China. And interestingly, came by air instead of ship.
  11. I was thinking the dog was thinking "Should I take a dump on it? "😁
  12. It isn't that hard to make your own. Provided you can work with 12Volts to operate it. A cheap regulator module, a cheap 12Volt relay, and a more expensive final relay. I would assume your turbine is putting out 3 phase power. And then be rectified and charge controlled now. With the module hooked to the batteries, the cheap relay hooked to the module, and then the more expensive relay hooked to the cheap one, when the Voltage would climb, the module would provide power to the cheap relay and it would cause the more expensive one to operate. That relay would either open one leg of the 3 phase or short one leg of the 3 phase. Or to connect one leg to a dump load.
  13. Picture of an assembled 24V32Ah battery. Terminal strip is to allow hooking up things like the GS shunts.
  14. So how are UK construction sites doing the 110 Volts then? Just a step down transformer?
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