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Old 10-28-2017, 11:31 AM   #2961
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Curious. So how big and heavy is a 17kWh battery (is 'bank' redundant? A battery is already a group of 'cells', right? A group of a group?)?

Can you regularly drain all 17 kWh, or is that a max, and you use less to extend the life?

Probably best to start a new thread?

-ERD50
150 kg or 330 lbs. At 100% DoD (depth of discharge), they lose 30% capacity after 2,000 cycles. At 50% or less DoD, many many cycles. It's better to have more than less storage capacity.

Temperature has a big effect too. That's my concern right now. Air-conditioning the garden shed?

Large storage capacities are not always built up from individual cells. Rather, they are often assemblies of smaller batteries which are built up from individual cells. Hence, the word "battery bank" is appropriate.

As mentioned earlier, I still have to install a set of 3 lithium batteries for my motorhome. Each battery is a bit larger than the usual lead-acid auto battery, with 4 large prismatic cells inside. Each cell is 100Ah of 3.2V, hence each battery is actually 4 x 3.2V x 100Ah = 1.28 kWh. The bank of 3 such batteries is 3.840 kWh.
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Old 10-28-2017, 12:49 PM   #2962
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Here is a large battery that is built-up from individual cells, of 141-lb total weight. Its capacity is 4 x 5 x 100Ah x 3.2V = 6.4kWh. It's a 12V system, the same as my motorhome system while my larger home storage system will be 48V.

The photo was linked from Technomadia, an RV'er couple who has been championing the use of lithium battery to replace the common lead-acid type.

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Old 10-28-2017, 01:19 PM   #2963
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Speaking of lithium batteries, I have some charging now to go fly an R/C airplane later on when (hopefully) the wind dies down enough in late afternoon/evening.

DW has left me again to go babysit the grandnieces, she'll be back tomorrow.
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Old 10-28-2017, 03:36 PM   #2964
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We got a bit of the winter prep done at the mountain house today. All of the kayaks, the canoe, the SUP, and the sailboat are put away for the winter. (Don't tell DH, but I'm willing to bring out the whitewater kayak again if the right opportunity arises). We put the deck chair cushions away and moved the grill onto the shed.

The weather has been warm so I felt like we were rushing things. Then it dawned on me that next week will be November already. Where does the time go?
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Old 10-28-2017, 03:41 PM   #2965
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We got a bit of the winter prep done at the mountain house today. All of the kayaks, the canoe, the SUP, and the sailboat are put away for the winter. (Don't tell DH, but I'm willing to bring out the whitewater kayak again if the right opportunity arises). We put the deck chair cushions away and moved the grill onto the shed.

The weather has been warm so I felt like we were rushing things. Then it dawned on me that next week will be November already. Where does the time go?


I was going to do the same today, but I took a nap instead. I’ll do it after the approaching storm passes.
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Old 10-28-2017, 03:52 PM   #2966
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Not today, but we're contemplating a 4:00 a.m. start (clocks go back tonight, so we get an extra hour) tomorrow:

https://www.tripadvisor.com/Attracti..._Dobrinishte_n
We don't change back to Standard time until next weekend as far as I know and Google and DW seem to confirm.
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Old 10-28-2017, 03:56 PM   #2967
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Some people like to beat the rush.
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Old 10-28-2017, 04:01 PM   #2968
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We don't change back to Standard time until next weekend as far as I know and Google and DW seem to confirm.
Yabbut, in Bulgaria they/we are on Eastern European Time, and the clocks go back at 04:00 a.m. Oct 29.
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Old 10-28-2017, 04:09 PM   #2969
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We got a bit of the winter prep done at the mountain house today. All of the kayaks, the canoe, the SUP, and the sailboat are put away for the winter. (Don't tell DH, but I'm willing to bring out the whitewater kayak again if the right opportunity arises). We put the deck chair cushions away and moved the grill onto the shed.

The weather has been warm so I felt like we were rushing things. Then it dawned on me that next week will be November already. Where does the time go?
I was swimming in Lake Huron last weekend which is very unusual for end of October. And it wasn't a Polar bear scenario, it was a going into the water to cool off and walking around afterward with only bathing suit on. The weird thing was that neighbour was out putting his snow fence up along the shore. Probably wise as with the lake so warm we could be in for a very snowy winter up there but who knows. Almost nothing last year.
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Old 10-28-2017, 04:10 PM   #2970
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Yabbut, in Bulgaria they/we are on Eastern European Time, and the clocks go back at 04:00 a.m. Oct 29.
Sorry Nemo2, I didn't click on your trip advisor link, had no idea you were so far afield. My bad! Hope you have a great time and that you are having good weather. Enjoy!
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Old 10-28-2017, 04:20 PM   #2971
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Sorry Nemo2, I didn't click on your trip advisor link, had no idea you were so far afield. My bad! Hope you have a great time and that you are having good weather. Enjoy!
Hey..it gave me a smile....and I did double check the change date.
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Old 10-28-2017, 04:28 PM   #2972
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Yabbut, in Bulgaria they/we are on Eastern European Time, and the clocks go back at 04:00 a.m. Oct 29.
It was all synchronized until George W Bush changed the time of the switchover in the US due to his impression that it would save fuel for the war in Iraq, or something. It’s very confusing if you are traveling between North America and Europe that week!
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Old 10-28-2017, 04:35 PM   #2973
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It was all synchronized until George W Bush changed the time of the switchover in the US due to his impression that it would save fuel for the war in Iraq, or something. It’s very confusing if you are traveling between North America and Europe that week!
I've traveled and done business(only 3 continents) during that horrible period of the year.

What a joke!

Surely if we could agree on DST we could agree on world peas!
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Old 10-28-2017, 04:38 PM   #2974
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Worked on the yard.

Raked and bagged 8 tall bags of leaves. Trimmed trees of dead branches, cut back some of this years growth, washed the tool shed, etc. About 6 hours of outdoor work in nice cool conditions.
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Old 10-28-2017, 04:41 PM   #2975
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I always wondered what the rationale was for changing the clocks at such disparate dates compared to the respective equinoxes. About 8 days before the vernal equinox but not until about 45 days after the autumnal equinox.
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Old 10-28-2017, 07:08 PM   #2976
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I always wondered what the rationale was for changing the clocks at such disparate dates compared to the respective equinoxes. About 8 days before the vernal equinox but not until about 45 days after the autumnal equinox.
You used rationale and clocks in the same sentence! 😂
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Old 10-28-2017, 07:39 PM   #2977
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I've traveled and done business(only 3 continents) during that horrible period of the year.

What a joke!

Surely if we could agree on DST we could agree on world peas!
World peas is a cake walk, world peace... a little harder.
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Old 10-28-2017, 07:53 PM   #2978
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World peas is a cake walk, world peace... a little harder.
See we can't agree on what it is called! 😁
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Old 10-28-2017, 08:17 PM   #2979
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Worked on the yard.

Raked and bagged 8 tall bags of leaves. Trimmed trees of dead branches, cut back some of this years growth, washed the tool shed, etc. About 6 hours of outdoor work in nice cool conditions.
Same here. I use the lawn mower with the collector on it for the leaves. Today, I got 6 tall brown paper leaf bags full, but that's only a tiny start. The Norway maples are still green. The sugar maples are yellow and red, but the leaves haven't yet dropped. We have 15 maples and an oak tree on our 1/3 acre lot, so we get a lot of leaves.

I also picked up all the sticks and branches, put down some Milorganite on the newly mowed lawn, changed the screens for glass in the storm doors, removed the window air conditioners (oddly enough, we used the bedroom one this past week) and put them away in the garage. I'm tired and sore.
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Old 10-29-2017, 04:59 AM   #2980
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It was all synchronized until George W Bush changed the time of the switchover in the US due to his impression that it would save fuel for the war in Iraq, or something. It’s very confusing if you are traveling between North America and Europe that week!
Nothing is ever simple. Just looking at the current season:
Paraguay 1 Oct (always an outlier)
Brazil 15 Oct
Most of Europe 29 Oct
Mexico 29 Oct
Canada & USA 5 Nov
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