On Monday, July 26, 2021 at 6:29:47 PM UTC-7, bill....@ieee.org wrote:> On Monday, July 26, 2021 at 11:55:52 PM UTC+10, Ed Lee wrote: > > On Monday, July 26, 2021 at 6:54:41 AM UTC-7, Ed Lee wrote: > > > On Monday, July 26, 2021 at 6:47:28 AM UTC-7, bill....@ieee.org wrote: > > > > On Monday, July 26, 2021 at 11:14:31 PM UTC+10, Ed Lee wrote: > > > > > I am wiring up 4 banks of batteries with dip40 pin & zif. > > > > <snipped irrelevant detail> > > > > > > > > How much current are you going to draw from the batteries (or pump into them when charging them). > > > 40V (10A) max from A or D. > > Simple deduction from detail that you skipped: (400V - 360V) / 10 ohm. > Not such a simple deduction - the 400V - 360 V could equally have denoted a voltage range. If it is isn't labelled amps, it isn't safe to jump to conclusions.It is the voltage range of the batteries. One end of the battery chain tends to be at the max and the other end at the min. 40V and 1 to 10 ohms also imply amps.
Battery balancing:
Started by ●July 26, 2021
Reply by ●July 27, 20212021-07-27
Reply by ●July 27, 20212021-07-27
On Tuesday, July 27, 2021 at 1:23:41 PM UTC+10, Ed Lee wrote:> On Monday, July 26, 2021 at 6:29:47 PM UTC-7, bill....@ieee.org wrote: > > On Monday, July 26, 2021 at 11:55:52 PM UTC+10, Ed Lee wrote: > > > On Monday, July 26, 2021 at 6:54:41 AM UTC-7, Ed Lee wrote: > > > > On Monday, July 26, 2021 at 6:47:28 AM UTC-7, bill....@ieee.org wrote: > > > > > On Monday, July 26, 2021 at 11:14:31 PM UTC+10, Ed Lee wrote: > > > > > > I am wiring up 4 banks of batteries with dip40 pin & zif. > > > > > <snipped irrelevant detail> > > > > > > > > > > How much current are you going to draw from the batteries (or pump into them when charging them). > > > > 40V (10A) max from A or D. > > > Simple deduction from detail that you skipped: (400V - 360V) / 10 ohm. > > > Not such a simple deduction - the 400V - 360 V could equally have denoted a voltage range. If it is isn't labelled amps, it isn't safe to jump to conclusions. > > It is the voltage range of the batteries. One end of the battery chain tends to be at the max and the other end at the min. 40V and 1 to 10 ohms also imply amps.There are other implications that could be drawn, and you really didn't set out the problem you were facing in a way that encouraged useful answers. This is a persistent problem here and you've come across as a dumb newbie, not for the first time. -- Bill Sloman, Sydney
Reply by ●July 27, 20212021-07-27
On Monday, July 26, 2021 at 9:22:03 PM UTC-7, bill....@ieee.org wrote:> On Tuesday, July 27, 2021 at 1:23:41 PM UTC+10, Ed Lee wrote: > > On Monday, July 26, 2021 at 6:29:47 PM UTC-7, bill....@ieee.org wrote: > > > On Monday, July 26, 2021 at 11:55:52 PM UTC+10, Ed Lee wrote: > > > > On Monday, July 26, 2021 at 6:54:41 AM UTC-7, Ed Lee wrote: > > > > > On Monday, July 26, 2021 at 6:47:28 AM UTC-7, bill....@ieee.org wrote: > > > > > > On Monday, July 26, 2021 at 11:14:31 PM UTC+10, Ed Lee wrote: > > > > > > > I am wiring up 4 banks of batteries with dip40 pin & zif. > > > > > > <snipped irrelevant detail> > > > > > > > > > > > > How much current are you going to draw from the batteries (or pump into them when charging them). > > > > > 40V (10A) max from A or D. > > > > Simple deduction from detail that you skipped: (400V - 360V) / 10 ohm. > > > > > Not such a simple deduction - the 400V - 360 V could equally have denoted a voltage range. If it is isn't labelled amps, it isn't safe to jump to conclusions. > > > > It is the voltage range of the batteries. One end of the battery chain tends to be at the max and the other end at the min. 40V and 1 to 10 ohms also imply amps. > There are other implications that could be drawn, and you really didn't set out the problem you were facing in a way that encouraged useful answers. This is a persistent problem here and you've come across as a dumb newbie, not for the first time.Other people don't seem to have problem understanding it. You are good at insult with your own stupidity. Perhaps using a mirror might have.> Bill Sloman, SydneyB.S. from Sydney.
Reply by ●July 27, 20212021-07-27
On Tuesday, July 27, 2021 at 2:36:44 PM UTC+10, Ed Lee wrote:> On Monday, July 26, 2021 at 9:22:03 PM UTC-7, bill....@ieee.org wrote: > > On Tuesday, July 27, 2021 at 1:23:41 PM UTC+10, Ed Lee wrote: > > > On Monday, July 26, 2021 at 6:29:47 PM UTC-7, bill....@ieee.org wrote: > > > > On Monday, July 26, 2021 at 11:55:52 PM UTC+10, Ed Lee wrote: > > > > > On Monday, July 26, 2021 at 6:54:41 AM UTC-7, Ed Lee wrote: > > > > > > On Monday, July 26, 2021 at 6:47:28 AM UTC-7, bill....@ieee.org wrote: > > > > > > > On Monday, July 26, 2021 at 11:14:31 PM UTC+10, Ed Lee wrote: > > > > > > > > I am wiring up 4 banks of batteries with dip40 pin & zif. > > > > > > > <snipped irrelevant detail> > > > > > > > > > > > > > > How much current are you going to draw from the batteries (or pump into them when charging them). > > > > > > 40V (10A) max from A or D. > > > > > Simple deduction from detail that you skipped: (400V - 360V) / 10 ohm. > > > > > > > Not such a simple deduction - the 400V - 360 V could equally have denoted a voltage range. If it is isn't labelled amps, it isn't safe to jump to conclusions. > > > > > > It is the voltage range of the batteries. One end of the battery chain tends to be at the max and the other end at the min. 40V and 1 to 10 ohms also imply amps. > > There are other implications that could be drawn, and you really didn't set out the problem you were facing in a way that encouraged useful answers. This is a persistent problem here and you've come across as a dumb newbie, not for the first time. > > Other people don't seem to have problem understanding it. You are good at insult with your own stupidity. Perhaps using a mirror might have.The stupidity is all yours. There's only one other poster in this thread - Jason Betts - and he responded only after you'd reacted to my post, and had provided a little more information. That makes your response spectacularly dumb, but you do seem to specialise in that. -- Bill Sloman, Sydney
Reply by ●July 27, 20212021-07-27
On Monday, July 26, 2021 at 9:59:31 PM UTC-7, bill....@ieee.org wrote:> On Tuesday, July 27, 2021 at 2:36:44 PM UTC+10, Ed Lee wrote: > > On Monday, July 26, 2021 at 9:22:03 PM UTC-7, bill....@ieee.org wrote: > > > On Tuesday, July 27, 2021 at 1:23:41 PM UTC+10, Ed Lee wrote: > > > > On Monday, July 26, 2021 at 6:29:47 PM UTC-7, bill....@ieee.org wrote: > > > > > On Monday, July 26, 2021 at 11:55:52 PM UTC+10, Ed Lee wrote: > > > > > > On Monday, July 26, 2021 at 6:54:41 AM UTC-7, Ed Lee wrote: > > > > > > > On Monday, July 26, 2021 at 6:47:28 AM UTC-7, bill....@ieee.org wrote: > > > > > > > > On Monday, July 26, 2021 at 11:14:31 PM UTC+10, Ed Lee wrote: > > > > > > > > > I am wiring up 4 banks of batteries with dip40 pin & zif. > > > > > > > > <snipped irrelevant detail> > > > > > > > > > > > > > > > > How much current are you going to draw from the batteries (or pump into them when charging them). > > > > > > > 40V (10A) max from A or D. > > > > > > Simple deduction from detail that you skipped: (400V - 360V) / 10 ohm. > > > > > > > > > Not such a simple deduction - the 400V - 360 V could equally have denoted a voltage range. If it is isn't labelled amps, it isn't safe to jump to conclusions. > > > > > > > > It is the voltage range of the batteries. One end of the battery chain tends to be at the max and the other end at the min. 40V and 1 to 10 ohms also imply amps. > > > There are other implications that could be drawn, and you really didn't set out the problem you were facing in a way that encouraged useful answers. This is a persistent problem here and you've come across as a dumb newbie, not for the first time. > > > > Other people don't seem to have problem understanding it. You are good at insult with your own stupidity. Perhaps using a mirror might have. > The stupidity is all yours. There's only one other poster in this thread - Jason Betts - and he responded only after you'd reacted to my post, and had provided a little more information. That makes your response spectacularly dumb, but you do seem to specialise in that.What part of "balancing batteries with 360V min and 400V max" don't you understand? It was all in the first post.> Bill Sloman, SydneyTotal Bull Shit from Sydney.
Reply by ●July 27, 20212021-07-27
On Tuesday, July 27, 2021 at 3:02:45 PM UTC+10, Ed Lee wrote:> On Monday, July 26, 2021 at 9:59:31 PM UTC-7, bill....@ieee.org wrote: > > On Tuesday, July 27, 2021 at 2:36:44 PM UTC+10, Ed Lee wrote: > > > On Monday, July 26, 2021 at 9:22:03 PM UTC-7, bill....@ieee.org wrote: > > > > On Tuesday, July 27, 2021 at 1:23:41 PM UTC+10, Ed Lee wrote: > > > > > On Monday, July 26, 2021 at 6:29:47 PM UTC-7, bill....@ieee.org wrote: > > > > > > On Monday, July 26, 2021 at 11:55:52 PM UTC+10, Ed Lee wrote: > > > > > > > On Monday, July 26, 2021 at 6:54:41 AM UTC-7, Ed Lee wrote: > > > > > > > > On Monday, July 26, 2021 at 6:47:28 AM UTC-7, bill....@ieee.org wrote: > > > > > > > > > On Monday, July 26, 2021 at 11:14:31 PM UTC+10, Ed Lee wrote: > > > > > > > > > > I am wiring up 4 banks of batteries with dip40 pin & zif. > > > > > > > > > <snipped irrelevant detail> > > > > > > > > > > > > > > > > > > How much current are you going to draw from the batteries (or pump into them when charging them). > > > > > > > > 40V (10A) max from A or D. > > > > > > > Simple deduction from detail that you skipped: (400V - 360V) / 10 ohm. > > > > > > > > > > > Not such a simple deduction - the 400V - 360 V could equally have denoted a voltage range. If it is isn't labelled amps, it isn't safe to jump to conclusions. > > > > > > > > > > It is the voltage range of the batteries. One end of the battery chain tends to be at the max and the other end at the min. 40V and 1 to 10 ohms also imply amps. > > > > There are other implications that could be drawn, and you really didn't set out the problem you were facing in a way that encouraged useful answers. This is a persistent problem here and you've come across as a dumb newbie, not for the first time. > > > > > > Other people don't seem to have problem understanding it. You are good at insult with your own stupidity. Perhaps using a mirror might have. > > > > The stupidity is all yours. There's only one other poster in this thread - Jason Betts - and he responded only after you'd reacted to my post, and had provided a little more information. That makes your response spectacularly dumb, but you do seem to specialise in that. > > What part of "balancing batteries with 360V min and 400V max" don't you understand? It was all in the first post.The bit where it spells out how much current you want to push through your connectors. I made this point in my original reaction to your initial post, and it still doesn't seem to have registered with you. My guess is that it probably never will. -- Bill Sloman, Sydney
Reply by ●July 27, 20212021-07-27
On Monday, July 26, 2021 at 10:59:52 PM UTC-7, bill....@ieee.org wrote:> On Tuesday, July 27, 2021 at 3:02:45 PM UTC+10, Ed Lee wrote: > > On Monday, July 26, 2021 at 9:59:31 PM UTC-7, bill....@ieee.org wrote: > > > On Tuesday, July 27, 2021 at 2:36:44 PM UTC+10, Ed Lee wrote: > > > > On Monday, July 26, 2021 at 9:22:03 PM UTC-7, bill....@ieee.org wrote: > > > > > On Tuesday, July 27, 2021 at 1:23:41 PM UTC+10, Ed Lee wrote: > > > > > > On Monday, July 26, 2021 at 6:29:47 PM UTC-7, bill....@ieee.org wrote: > > > > > > > On Monday, July 26, 2021 at 11:55:52 PM UTC+10, Ed Lee wrote: > > > > > > > > On Monday, July 26, 2021 at 6:54:41 AM UTC-7, Ed Lee wrote: > > > > > > > > > On Monday, July 26, 2021 at 6:47:28 AM UTC-7, bill....@ieee.org wrote: > > > > > > > > > > On Monday, July 26, 2021 at 11:14:31 PM UTC+10, Ed Lee wrote: > > > > > > > > > > > I am wiring up 4 banks of batteries with dip40 pin & zif. > > > > > > > > > > <snipped irrelevant detail> > > > > > > > > > > > > > > > > > > > > How much current are you going to draw from the batteries (or pump into them when charging them). > > > > > > > > > 40V (10A) max from A or D. > > > > > > > > Simple deduction from detail that you skipped: (400V - 360V) / 10 ohm. > > > > > > > > > > > > > Not such a simple deduction - the 400V - 360 V could equally have denoted a voltage range. If it is isn't labelled amps, it isn't safe to jump to conclusions. > > > > > > > > > > > > It is the voltage range of the batteries. One end of the battery chain tends to be at the max and the other end at the min. 40V and 1 to 10 ohms also imply amps. > > > > > There are other implications that could be drawn, and you really didn't set out the problem you were facing in a way that encouraged useful answers. This is a persistent problem here and you've come across as a dumb newbie, not for the first time. > > > > > > > > Other people don't seem to have problem understanding it. You are good at insult with your own stupidity. Perhaps using a mirror might have. > > > > > > The stupidity is all yours. There's only one other poster in this thread - Jason Betts - and he responded only after you'd reacted to my post, and had provided a little more information. That makes your response spectacularly dumb, but you do seem to specialise in that. > > > > What part of "balancing batteries with 360V min and 400V max" don't you understand? It was all in the first post. > The bit where it spellatts out how much current you want to push through your connectors. I made this point in my original reaction to your initial post, and it still doesn't seem to have registered with you. My guess is that it probably never will.The current drawing into the batteries depends on what the battery voltages are (360V to 400V) and how the battery chains are connected (with 1 to 10 ohms resistors). They were spelled out in the first post. Ignorant person like you keeping arguing with stupid reasoning.> -- > Bill Sloman, SydneyTotal absolute Bull Shit from Sydney.
Reply by ●July 27, 20212021-07-27
On Wednesday, July 28, 2021 at 12:48:23 AM UTC+10, Ed Lee wrote:> On Monday, July 26, 2021 at 10:59:52 PM UTC-7, bill....@ieee.org wrote: > > On Tuesday, July 27, 2021 at 3:02:45 PM UTC+10, Ed Lee wrote: > > > On Monday, July 26, 2021 at 9:59:31 PM UTC-7, bill....@ieee.org wrote: > > > > On Tuesday, July 27, 2021 at 2:36:44 PM UTC+10, Ed Lee wrote: > > > > > On Monday, July 26, 2021 at 9:22:03 PM UTC-7, bill....@ieee.org wrote: > > > > > > On Tuesday, July 27, 2021 at 1:23:41 PM UTC+10, Ed Lee wrote: > > > > > > > On Monday, July 26, 2021 at 6:29:47 PM UTC-7, bill....@ieee.org wrote: > > > > > > > > On Monday, July 26, 2021 at 11:55:52 PM UTC+10, Ed Lee wrote: > > > > > > > > > On Monday, July 26, 2021 at 6:54:41 AM UTC-7, Ed Lee wrote: > > > > > > > > > > On Monday, July 26, 2021 at 6:47:28 AM UTC-7, bill....@ieee.org wrote: > > > > > > > > > > > On Monday, July 26, 2021 at 11:14:31 PM UTC+10, Ed Lee wrote: > > > > > > > > > > > > I am wiring up 4 banks of batteries with dip40 pin & zif. > > > > > > > > > > > <snipped irrelevant detail> > > > > > > > > > > > > > > > > > > > > > > How much current are you going to draw from the batteries (or pump into them when charging them). > > > > > > > > > > 40V (10A) max from A or D. > > > > > > > > > Simple deduction from detail that you skipped: (400V - 360V) / 10 ohm. > > > > > > > > > > > > > > > Not such a simple deduction - the 400V - 360 V could equally have denoted a voltage range. If it is isn't labelled amps, it isn't safe to jump to conclusions. > > > > > > > > > > > > > > It is the voltage range of the batteries. One end of the battery chain tends to be at the max and the other end at the min. 40V and 1 to 10 ohms also imply amps. > > > > > > There are other implications that could be drawn, and you really didn't set out the problem you were facing in a way that encouraged useful answers. This is a persistent problem here and you've come across as a dumb newbie, not for the first time. > > > > > > > > > > Other people don't seem to have problem understanding it. You are good at insult with your own stupidity. Perhaps using a mirror might have. > > > > > > > > The stupidity is all yours. There's only one other poster in this thread - Jason Betts - and he responded only after you'd reacted to my post, and had provided a little more information. That makes your response spectacularly dumb, but you do seem to specialise in that. > > > > > > What part of "balancing batteries with 360V min and 400V max" don't you understand? It was all in the first post. > > > > The bit where it spells out how much current you want to push through your connectors. I made this point in my original reaction to your initial post, and it still doesn't seem to have registered with you. My guess is that it probably never will. > > The current drawing into the batteries depends on what the battery voltages are (360V to 400V) and how the battery chains are connected (with 1 to 10 ohms resistors). > They were spelled out in the first post.They weren't. There's a problem when people describe systems that they understand - they leave out stuff that is obvious to them, which isn't remotely obvious to people who don't know the system is supposed to do. You seem to have produced a fairly flagrant example.> Ignorant person like you keeping arguing with stupid reasoning.I'm ignorant because you did a truly rotten job of describing what you were doing, and the stupidity in your reasoning, is your failure to appreciate quite how inadequate your original post was. Being rude to me isn't a constructive reaction, though it may be as near as you can get to one. -- Bill Sloman, Sydney
Reply by ●July 27, 20212021-07-27
On Tuesday, July 27, 2021 at 8:18:18 AM UTC-7, bill....@ieee.org wrote:> On Wednesday, July 28, 2021 at 12:48:23 AM UTC+10, Ed Lee wrote: > > On Monday, July 26, 2021 at 10:59:52 PM UTC-7, bill....@ieee.org wrote: > > > On Tuesday, July 27, 2021 at 3:02:45 PM UTC+10, Ed Lee wrote: > > > > On Monday, July 26, 2021 at 9:59:31 PM UTC-7, bill....@ieee.org wrote: > > > > > On Tuesday, July 27, 2021 at 2:36:44 PM UTC+10, Ed Lee wrote: > > > > > > On Monday, July 26, 2021 at 9:22:03 PM UTC-7, bill....@ieee.org wrote: > > > > > > > On Tuesday, July 27, 2021 at 1:23:41 PM UTC+10, Ed Lee wrote: > > > > > > > > On Monday, July 26, 2021 at 6:29:47 PM UTC-7, bill....@ieee.org wrote: > > > > > > > > > On Monday, July 26, 2021 at 11:55:52 PM UTC+10, Ed Lee wrote: > > > > > > > > > > On Monday, July 26, 2021 at 6:54:41 AM UTC-7, Ed Lee wrote: > > > > > > > > > > > On Monday, July 26, 2021 at 6:47:28 AM UTC-7, bill....@ieee.org wrote: > > > > > > > > > > > > On Monday, July 26, 2021 at 11:14:31 PM UTC+10, Ed Lee wrote: > > > > > > > > > > > > > I am wiring up 4 banks of batteries with dip40 pin & zif. > > > > > > > > > > > > <snipped irrelevant detail> > > > > > > > > > > > > > > > > > > > > > > > > How much current are you going to draw from the batteries (or pump into them when charging them). > > > > > > > > > > > 40V (10A) max from A or D. > > > > > > > > > > Simple deduction from detail that you skipped: (400V - 360V) / 10 ohm. > > > > > > > > > > > > > > > > > Not such a simple deduction - the 400V - 360 V could equally have denoted a voltage range. If it is isn't labelled amps, it isn't safe to jump to conclusions. > > > > > > > > > > > > > > > > It is the voltage range of the batteries. One end of the battery chain tends to be at the max and the other end at the min. 40V and 1 to 10 ohms also imply amps. > > > > > > > There are other implications that could be drawn, and you really didn't set out the problem you were facing in a way that encouraged useful answers. This is a persistent problem here and you've come across as a dumb newbie, not for the first time. > > > > > > > > > > > > Other people don't seem to have problem understanding it. You are good at insult with your own stupidity. Perhaps using a mirror might have. > > > > > > > > > > The stupidity is all yours. There's only one other poster in this thread - Jason Betts - and he responded only after you'd reacted to my post, and had provided a little more information. That makes your response spectacularly dumb, but you do seem to specialise in that. > > > > > > > > What part of "balancing batteries with 360V min and 400V max" don't you understand? It was all in the first post. > > > > > > The bit where it spells out how much current you want to push through your connectors. I made this point in my original reaction to your initial post, and it still doesn't seem to have registered with you. My guess is that it probably never will. > > > > The current drawing into the batteries depends on what the battery voltages are (360V to 400V) and how the battery chains are connected (with 1 to 10 ohms resistors). > > They were spelled out in the first post. > They weren't. There's a problem when people describe systems that they understand - they leave out stuff that is obvious to them, which isn't remotely obvious to people who don't know the system is supposed to do. You seem to have produced a fairly flagrant example.The first post said: Considering 4 battery banks: Min 360V, Max 400V _A_ _B_ _C_ _D_ 370 380 390 400 400 390 380 370 connected with X ohm at Y duty> > Ignorant person like you keeping arguing with stupid reasoning. > I'm ignorant because you did a truly rotten job of describing what you were doing, and the stupidity in your reasoning, is your failure to appreciate quite how inadequate your original post was. Being rude to me isn't a constructive reaction, though it may be as near as you can get to one.You started with insult, i responded with insult.> Bill Sloman, SydneyTotal absolutely stupid ignorant B.S. from Sydney.
Reply by ●July 28, 20212021-07-28
On Wednesday, July 28, 2021 at 1:26:05 AM UTC+10, Ed Lee wrote:> On Tuesday, July 27, 2021 at 8:18:18 AM UTC-7, bill....@ieee.org wrote: > > On Wednesday, July 28, 2021 at 12:48:23 AM UTC+10, Ed Lee wrote: > > > On Monday, July 26, 2021 at 10:59:52 PM UTC-7, bill....@ieee.org wrote: > > > > On Tuesday, July 27, 2021 at 3:02:45 PM UTC+10, Ed Lee wrote: > > > > > On Monday, July 26, 2021 at 9:59:31 PM UTC-7, bill....@ieee.org wrote: > > > > > > On Tuesday, July 27, 2021 at 2:36:44 PM UTC+10, Ed Lee wrote: > > > > > > > On Monday, July 26, 2021 at 9:22:03 PM UTC-7, bill....@ieee.org wrote: > > > > > > > > On Tuesday, July 27, 2021 at 1:23:41 PM UTC+10, Ed Lee wrote: > > > > > > > > > On Monday, July 26, 2021 at 6:29:47 PM UTC-7, bill....@ieee.org wrote: > > > > > > > > > > On Monday, July 26, 2021 at 11:55:52 PM UTC+10, Ed Lee wrote: > > > > > > > > > > > On Monday, July 26, 2021 at 6:54:41 AM UTC-7, Ed Lee wrote: > > > > > > > > > > > > On Monday, July 26, 2021 at 6:47:28 AM UTC-7, bill....@ieee.org wrote: > > > > > > > > > > > > > On Monday, July 26, 2021 at 11:14:31 PM UTC+10, Ed Lee wrote:<snip>> > > They were spelled out in the first post. > > They weren't. There's a problem when people describe systems that they understand - they leave out stuff that is obvious to them, which isn't remotely obvious to people who don't know the system is supposed to do. You seem to have produced a fairly flagrant example. > The first post said: > > Considering 4 battery banks: > > Min 360V, Max 400V > > _A_ _B_ _C_ _D_ > 370 380 390 400 > 400 390 380 370 > > connected with X ohm at Y duty > > > > Ignorant person like you keeping arguing with stupid reasoning. > > > > I'm ignorant because you did a truly rotten job of describing what you were doing, and the stupidity in your reasoning, is your failure to appreciate quite how inadequate your original post was. Being rude to me isn't a constructive reaction, though it may be as near as you can get to one. > > You started with insult, I responded with insult.The line <snipped irrelevant detail> wasn't flattering, but asking for current ratings for battery bank connectors when you didn't tell us what the battery bank was connected to, or why it was connected to whatever it was driving doesn't invite flattering responses. Your reaction wasn't exactly informative - "40V (10A) max from A or D." - and things went downhill from there. -- Bill Sloman, Sydney
