Sept 11 2018
Total trip 448 nm
Time Watts used, knots, Watts made, mile marker
8:00 am 3 kWh, sog 3.1, solar 180, mm 357, lock 1
9:00 am 3 kWh, sog 3.8, solar 749, mm 354
10:00 am 3 kWh, sog 3.5, solar 610, mm 351
11:00 am 3 kWh, sog 3.4, solar 1014, mm 347
12:00 pm 3 kWh, sog 3.4, solar 945, mm 342
1:00 pm 3 kWh, sog 3.1, solar 906, mm 338
2:00 all stop mm 335
Sept 9 2018
Total trip 425 nm
10:00 am 4 kWh, sog 3.5, solar 451, mm 375, lock 1
11:00 am 4 kWh, sog 3, solar 2219, mm 373, lock 2
12:00 pm 4 kWh, sog 3.1, solar 466, mm 371
1:00 pm 4 kWh, sog 3.5, solar 524, mm 366
2:00 pm 4 kWh, sog 3.4, solar 147, mm 363, rain
3:00 pm 4 kWh, sog 3.5, solar 820, mm 359
3:30 pm all stop, mm 358
Sept 7 2018
Total trip 408 nm
9:00 am 5 kWh, sog 3.1, solar 577, mm 394
10:00 am 6 kWh, sog 3.9, solar 1129, mm 392, lock 1
11:00 am 6 kWh, sog 4, solar 358, mm 387
12:00 pm 6 kWh, sog 4, solar 2118, mm 383
1:00 pm 6 kWh, sog 4, solar 1450, mm 377
1:15 pm all stop.
Aug 21st 2018
Total trip 391 nm
10:30 am 4 kWh, sog 3.6, solar 0, mm 412
12:00 am 4 kWh, sog 3.5, solar 2123, mm 413, lock 1
1:00 pm 4 kWh, sog 3.1, solar 753, mm 408, lock 2
2:00 pm 4 kWh, sog 3.3, solar 939, mm 406
3:00 pm 4 kWh, sog 3.6, solar 449, mm 402
4:00 pm 4 kWh, sog 3.4, solar 734, mm 399, lock 3
5:00 pm 6 kWh, sog 3.8, solar 534, mm 394
5:30 all stop.
Aug 14th 2018
Total trip 373 nm
9 am 6 kWh, sog 3.9 , solar 803, mm 448
10 am 6 kWh, sog 3.8, solar 826, mm 447
11 am 6 kWh, sog 4.2, solar 1265, mm 442
12 pm 6 kWh, sog 4.2, solar 574, mm 438
1 pm 6 kWh, sog 4, solar 2640, mm 433
2 pm 6 kWh, sog 4.1, solar 1872, mm 429
3 pm 6 kWh, sog 4.2, solar 1713, mm 424
4 pm 6 kWh, sog 3.9, solar 1254, mm 419
5 pm 6 kWh, sog 4, solar 740, mm 414
5:30 pm all stop, mm 412
May 28th 2018
Total trip 337 nm
11 am 6 kWh, sog 3.9, solar 1765, mm 208
12 pm 6 kWh, sog 3.6, solar 1132, mm 212
1 pm 6 kWh, sog 4, solar 612, mm 215 end Tennessee river start Tombigbee mm 450
2 pm all stop Tombigbee mm 448
May 24th 2018
Total trip 327 nm
7 am 6 kWh, sog 3.5, solar 344, mm 192
8 am 6 kWh, sog 3.1, solar 575, mm 196
9 am 6 kWh, sog 3.1, solar 912, mm 198
10 am 6 kWh, sog 2.5, solar 1210, mm 201
11 am 6 kWh, sog 1.8, solar 1597, mm 204
12 pm waiting on dam lock, mm 206
1 pm all stop , mm 207
May 23rd 2018
Total trip 312 nm
8 am 6 kWh, sog 3.5, solar 560, mm 159
9 am 6 kWh, sog 3.4, solar 873, mm 164
10 am 6 kWh, sog 3.4, solar 1465, mm 168
11 am 6 kWh, sog 3.3, solar 1565, mm 172
12 pm 6 kWh, sog 3.4, solar 2009, mm 176
1 pm 6 kWh, sog 3.5, solar 500, mm 180
2 pm 4 kWh, sog 2.6, solar 1277, mm 184
3 pm 4 kWh, sog 2.7, solar 1921, mm 186
4 pm 4 kWh, sog 2.5, solar 342, mm 189
5 pm all stop Mm 192
May 21st 2018
Total trip 279
10 am 5 kWh, sog 3.1, solar 1317, mm 135
11 am 5 kWh, sog 3, solar 496, mm 138
12 pm 5 kWh, sog 3.2, solar 2120, mm 142
1 pm 5 kWh, sog 2.9, solar 2202, mm 145
2 pm 5 kWh, sog 3.1, solar 594, mm 149
3 pm 5 kWh, sog 2.8, solar 1739, mm 152
4 pm 5 kWh, sog 3.1, solar 391, mm 155
5 pm 5 kWh, all stop mm 159
May 19th 2018
Total trip 255 nm
10 am 4 kWh, sog 2.8, solar 1297, mm 115
11 am 5 kWh, sog 3, solar 1634, mm 119
12 pm 5 kWh, sog 3, solar 1932, mm 123
1 pm 5 kWh, sog 3, solar 2086, mm 127
2 pm 5 kWh, sog 3, solar 2059, mm 130
3 pm 5 kWh, sog 3.3, solar 802, mm 133
4 pm all stop, mm 135
May 17 2018
Total trip 235 nm
8:30 am 4 kWh, sog 3.7, solar 414, mm 96
9:30 am 5 kWh, sog 3.9, solar 1033, mm 101
10:00 am 5 kWh, sog 3.8, solar 422, mm 103
11:00 am 5 kWh, sog 3.9, solar 431, mm 108
12:00 pm 5 kWh, sog 3.9, solar 1390, mm 113
1:00 pm all stop, mm 115
May 15th 2018
11 am 5 kWh, sog 3.4, solar 1690, mm 73
12 pm 5 kWh, sog 3.5, solar 2026, mm 78
1 pm 5 kWh, sog 4, solar 1601, mm 84
2 pm 5 kWh, sog 3.9, solar 1664, mm 88
3 pm 5 kWh, sog 4, solar 1681, mm 92
4 pm 5 kWh, sog 3.9, solar 1146, mm 96
All stop
May 14th 2018
10 am 4 kWh , sog 3 knots, solar 1455 Watts, mm 65
11 am, 4 kWh , sog 3.3 knots, solar 1776 Watts, mm 70
12 pm, 4 kWh, sog 3.1 knots, solar 1882 Watts, mm 73
All stop
April 27 2018
Total Trip 185 nm
12 pm 6 KWh, sog 4.6 knots, solar 2000 watts mm 43
1 pm 6 KWh, sog 3.4 knots, solar 2034 watts, mm 46
2 pm 6 KWh, sog 3 knots, solar 2083 watts, mm 51
3 pm 6 KWh, sog 3 knots, solar 1652 watts, mm 54
4 pm 6 KWh, sog 3 knots, solar 1412 watts, mm 57
5 pm 4 KWh, sog 2.4 knots, solar 858 watts, mm 61
6 pm 4 KWh, sog 3 knots, solar 307 watts, mm 64
7pm all stop. mm 65
April 26 2018
12:30 4kw sog 3.5k solar 290w mm 40
1:30. All stop. Mm 43
April 24th 2018
Total Trip 165 nm
11 am. 4.5 kWh sog 4.2 solar 1047w Tennessee river mm 25
12 pm 4.5 kWh sog 3.6 solar 1013w mm 30
1 pm 4.5 kWh sog 3.5 solar 173w. Mm 33
2 pm 4.5 kWh sog 3.4 solar 603w mm 38
3 pm all stop solar 1444w mm 40
April 17 2018
Total trip 145 nm
10:00 am 5 kwh, sog 4, solar 1579, mm 46
11:00 am 5 kwh, sog 4.4, solar 1767, mm 44
12:00 pm 5 kwh, sog 4,4, solar 1764, mm 40
1:00 pm 5 kwh, sog 4,1, solar 1869, mm 35
2:00 pm 5 kwh, sog 4.1, solar 1574, mm 31
April 15th 2018
Total trip 130 nm
11:00 am 3.5 kwh, sog 3.5, solar 425, mm 54
12:00 pm 3.5 kwh, sog 3.6, solar 433, mm 52
1:00 PM 6 kwh, sog 4.3, solar 288, mm 47
April 10th 2018
Total trip 120 nm
10:00 am 3.5 kwh, sog 4.2, solar 953, mm 77
11:00 am 3.5 kwh, sog 4.2, solar 654, mm 61
3:00 pm 4 kwh, sog 3.9, solar 1128, mm 59
April 8th 2018
11:00 am 4 kwh, sog 4.5, solar 930, mm 91
12:00 pm 4 kwh, sog 4.9, solar 683, mm 85
1:00 pm 4 kwh, sog 4.9, solar 1174, mm 79
April 4th 2018
1:00 pm 3 kwh, sog 5, solar 1843, mm 101
2:00 pm 3 kwh, sog 5.1, solar 1736, mm 100
3:30 pm 3 kwh, sog 4.4, solar 1492, mm 92
April 3rd 2018
7:00 am 3.5 kWh, sog 4.1, solar 170, mm 149, lock
8:00 am 4 kWh, sog 5.5, solar 170, mm 148
9:00 am 4kwh, sog 5.9, solar 191, mm 143
10:00 am 4 kWh, sog 5.5, solar 425, mm 135
11:00 am 4 kWh, sog 5.7, solar 1670, mm 129
12:00 pm 4 kwh, sog 5.1, solar 1600, mm 123
1:00 pm 4 kwh, sog 3, solar 2127, mm 119
3:50 pm Full Stop mm 103
March 31 2018
10 am 3 kwh, sog 5.1, solar 680, mm 175
11 am 3 kWh, sog 5.4, solar 1900,
1:30 pm full stop mm 154 anchored.
On Sep 14, 2018, at 3:13 PM, Brian Dolan kd5crs@gmail.com [electricboats] <electricboats@yahoogroups.com> wrote:
I'm also converting a cabin cruiser, except I'm going whole hog with conversion from gas to electric for propulsion too.. LiFePO4 is a good choice, because performance can improve with less weight. It isn't like a monohull sailboat where the weight difference is negligible vs the lead keel.I got my LiFePO4s gently used, I will give a review once I've done some experiments. Cost was about as much as new AGMs, and of course about 1000 lbs lighter.BrianOn Fri, Sep 14, 2018, 2:51 PM Daniel Michaels nov32394@yahoo.com [electricboats] <electricboats@yahoogroups.com> wrote:On a budget why are you going with lithium batteries? Use AGM down to 20% or lead crystal down to 0%. A simple solar panel or a "Solar" 100/20/2 smart charger. Backup 2200 inverter generator will run all day in case you need to keep the air conditioner going longer than expected.
On Fri, Sep 14, 2018 at 3:42 AM, oak oak_box@yahoo...com [electricboats]<electricboats@yahoogroups...com> wrote:I currently have a gas powered cabin cruiser, with a gas powered generator - that may be dead at this point...Rather than replacing the generator, or spending a LOT of money on questionable mechanics over the next couple of years... I'm thinking about replacing the generator with a bank of LiFePO4 batteries and a good sized inverter.My current expectation is that while I'm out away from shorepower, I won't be gone that long, and I won't need a tremendous amount of 120V AC power. Eventually, my long term goal would be to build up the battery bank to the point where I could run the boat's AC for up to 4-6 hours while I'm out on the water.... I should be able to get 3000W inverter without spending a fortune, and that should cover anything I'd want to run on the boat (once I build up the battery bank...).This project is just to get things started and get more familiar with lithium batteries, etc...My thought was to start with four CALB 100Ah cells to generate the 12V for the inverter.BMS: I'm comfortable playing with arduinos.* I was thinking of using an Arduino Nano (8 analog input ports) to monitor the battery. (voltage dividers to get the battery voltages at each point of the string within the range of the Arduino)* I can set up the "BMS" to monitor the voltage of each of the 4 cells in the bank (and even run 2 parallel banks with just one Arduino). I'm assuming I need to monitor the discharge voltage of each cell, and monitor the charge voltage of each cell. With a shunt, I'd even be able to monitor the current going through the system.* Is that all I need the "BMS" to do? I could set up a contactor between the battery and the load/charger so that if the bms tripped due to any cell getting out of spec, it would shut down any load or charging.Charging: If I don't care how long it takes to charge the bank, can I simply hook up a 10A power supply to the 12V series string, set the voltage to 14V (3.5V per cell), and let it go? At 10A, this would be .1C, which from what I've read should be very safe for the bank. I realize it won't be fast, and I realize that I would lose some efficiency, but would I hurt the batteries? The bank would usually have at least overnight to charge, if not several days.Battery Bank Wiring:If I start with 100Ah cells, this is easy - just wire 4 cells in series, monitor the voltage at each connection, subtract to get the cell voltage, and do the logic to generate signals for LED's and the relay to shut the thing down if it gets out of spec.When I add the next bank... Is it better to put the cells in parallel, and then put the parallel'd cells in series, or is it better to put two (or more) series strings in parallel? The one key difference I see here is that if I put multiple strings in parallel, then I can put a BMS point on each battery cell..I'm trying to do this on a reasonably small budget - and trying to limit the big expenses to the batteries.thoughts / suggestions?John
Posted by: "james@deny.org" <james@deny.org>
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