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Post by Warren on Apr 26, 2019 20:58:20 GMT
Spec sheet shows the max continuous discharge current for the 100 ah LFP battery is 100 amps. For two batteries wired in parallel, does this affect the max discharge current spec, or does it remain 100 amps?
For a 12V bank, does this mean the max continuous power is 1200W? Would it be useless to purchase an inverter rated for anything more than this? Thanks, Warren
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Post by tattoo on Apr 26, 2019 22:01:14 GMT
What are you wanting to run off of your inverter?? I think it's a waste to buy anything larger than a 500w inverter unless your wanting to run something like a table saw, a large power tool, AVAC or something like that..........
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Post by tattoo on Apr 26, 2019 22:02:13 GMT
Spec sheet shows the max continuous discharge current for the 100 ah LFP battery is 100 amps. For two batteries wired in parallel, does this affect the max discharge current spec, or does it remain 100 amps? That would be 200ah with 2 100ah batteries.....
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Post by Warren on Apr 27, 2019 0:27:07 GMT
Spec sheet shows the max continuous discharge current for the 100 ah LFP battery is 100 amps. For two batteries wired in parallel, does this affect the max discharge current spec, or does it remain 100 amps? That would be 200ah with 2 100ah batteries..... I'm asking about the max discharge current, not the battery capacity. Does the discharge current remain 100 amps when you have two batteries wired in parallel?
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Post by Warren on Apr 27, 2019 0:28:39 GMT
What are you wanting to run off of your inverter?? I think it's a waste to buy anything larger than a 500w inverter unless your wanting to run something like a table saw, a large power tool, AVAC or something like that.......... What does it matter? Maybe I am running those things. That doesn't answer my question............
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Post by solarmann on Apr 27, 2019 4:08:16 GMT
Max discharge rate would be 200amp. It would only stay 100amps if you wire the batteries in series.
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Post by tattoo on Apr 27, 2019 11:54:06 GMT
Max discharge rate would be 200amp. It would only stay 100amps if you wire the batteries in series. That's what I told him and he wasn't happy with that.... I don't know what he's asking...
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Post by tattoo on Apr 27, 2019 12:03:52 GMT
It matters a lot and I really doubt your running anything that big with such a small system.... If it runs at all it won't run long....
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Post by tattoo on Apr 27, 2019 12:05:48 GMT
Spec sheet shows the max continuous discharge current for the 100 ah LFP battery is 100 amps. For two batteries wired in parallel, does this affect the max discharge current spec, or does it remain 100 amps? For a 12V bank, does this mean the max continuous power is 1200W? Would it be useless to purchase an inverter rated for anything more than this? Thanks, Warren Lets try it this way.
No with 2 batteries it's at 200ah discharge and yes it's useless......
That's not the way you should look at solar but I think that's what your asking......
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Post by bupkis on Apr 27, 2019 12:35:26 GMT
Warren, solarman answered the max discharge question 200amps not 200ah.
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Post by tattoo on Apr 27, 2019 14:42:23 GMT
^^^^^ Not really they are basically the same it depends on the draw......^^^^^^ That's why I asked what he's planning on running.....
The Amp-Hour rating is a measure of the total electrical charge stored in the battery. A 35 Amp hour battery would produce 1 ammp for 35 hours, or 2 amps for 17.5 hours etc. Basically the 50 Amp-Hour battery will last 50/35 or 1.43 times longer than the 35 Amp-Hour battery.
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Post by bupkis on Apr 27, 2019 15:36:48 GMT
^^^^basically hogwash, amp is the draw and ah is the capacity. one is a rate and the other is amount of power. you don't understnd how various 'draws' affect capacity (Peukert).
How was solarman able to give the answer without asking questions?
Riddle us this t, what is the 'rated' max continuous amp draw (discharge) for you battery bank? not how long it would last at a high discharge rate or how much energy it may have at some given discharge rate.
At least the warren's battery makers supplies that information!
Peukert's law, presented by the German scientist Wilhelm Peukert in 1897, expresses approximately the change in capacity of rechargeable lead–acid batteries at different rates of discharge. As the rate of discharge increases, the battery's available capacity decreases, approximately according to Peukert's law.
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Post by tattoo on Apr 27, 2019 18:01:27 GMT
^^^^ But without one you won't have the other....^^^^
So what's the answer to his inverter question?? I haven't seen an answer to that one yet?? Remember you can't ask a question......
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Post by solarmann on Apr 27, 2019 20:21:33 GMT
With a 200amp continuous draw rated battery bank, you could easily run a 2000/3000 watt inverter without risking damage due to overheating the lithium batteries. Trouble would be how quickly the batteries would drain at that kinda of load, but you could get away with running a microwave or some other high demand appliance for short periods of time. A Xantrex 2000watt inverter is listed as 205amp peak.
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Post by tattoo on Apr 28, 2019 14:49:47 GMT
but you could get away with running a microwave or some other high demand appliance for short periods of time. I haven't seen a microwave, coffee pot, heater or anything else work for very long with that few of panels and batteries..... What it will do is start throwing error codes....
I wish him luck.....
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