Funny, happened to us, too, some years
back... six sets of 2V cell pairs in a 24V bank, with one case
showing 0.05 volts DC, the difference in resting voltage between
the two cells. We opened up the cover (the case was red, as I
recall, Mick), disconnected the int
I had one whole pallet of "famous brand" that were charged backwards.
The positive post (as charged) WAS painted red, but the plastic case "+" and "-" markings were by the wrong posts.
Before I realized the error, I installed 8 of these at a customer, going by the red painted post, not noticing
Anything more than a few millivolts.
On 10/15/12, mac Lewis wrote:
> How much voltage drop indicates a problem?
>
> On Mon, Oct 15, 2012 at 8:13 AM, Chris Mason
> wrote:
>
>> You should see a voltage drop across the connections if they are faulty.
>>
>>
>> On Mon, Oct 15, 2012 at 8:54 AM, mac Lew
Mick.we had this happen once too.Luckily it had already become
standard procedure for us to check and notate voltage of each battery prior
to connecting battery cableswe had installed 11 of the 12 batteries and
the 12th battery turned out to have reversed polarity..While we didn't
s
How much voltage drop indicates a problem?
On Mon, Oct 15, 2012 at 8:13 AM, Chris Mason
wrote:
> You should see a voltage drop across the connections if they are faulty.
>
>
> On Mon, Oct 15, 2012 at 8:54 AM, mac Lewis wrote:
>
>> Hmmm,
>>
>> This had factory installed bussing. I will pull it o
You should see a voltage drop across the connections if they are faulty.
On Mon, Oct 15, 2012 at 8:54 AM, mac Lewis wrote:
> Hmmm,
>
> This had factory installed bussing. I will pull it off and clean it up.
> Thanks. I suppose that something like this be invisible to an Amp hr
> meter.
>
>
>
Mick,
Thanks for sharing. Outstanding troubleshooting (particularly when done
remotely).
Bill Loesch
Solar 1 - Saint Louis Solar
On 15-Oct-12 8:24 AM, Mick Abraham wrote:
Hello, Wrenchies~
Mac Lewis wrote about battery strangeness on the Sunny Island system
for his clients. Here is a theo
Hello, Wrenchies~
Mac Lewis wrote about battery strangeness on the Sunny Island system for
his clients. Here is a theory to consider, Mac.
I once bought a 48v string of >famous brand< two volt cells in which one
cell had been loaded backwards into its case. When hooked up according to
the +/- mar
Hmmm,
This had factory installed bussing. I will pull it off and clean it up.
Thanks. I suppose that something like this be invisible to an Amp hr
meter.
On Sun, Oct 14, 2012 at 11:01 PM, William Miller wrote:
> Mac:
>
> We had a similar problem with a large bank of IBE 2 volt cells. The
> b
Mac:
We had a similar problem with a large bank of IBE 2 volt cells. The
batteries had to be removed the same day they were installed and then
reinstalled the next day. They sat outside for one night. The flags
acquired an invisible but insidious corrosion that caused problems getting
and
Call Dane Forsberg at SMA. Very knowledgeable. He helped me recently go
through all the settings on my 8kw SI system.
Sent from my iPhone
On Oct 14, 2012, at 9:41 PM, mac Lewis wrote:
Hi wrenches,
About 2 months ago, we installed an off-grid Sunny Island System. Here are
the specs:
8.82 kW P
Hi wrenches,
About 2 months ago, we installed an off-grid Sunny Island System. Here are
the specs:
8.82 kW PV
SunnyBoy 8000
2 x Sunny Island 5048 Inverters
2490 Ahr SolarOne HUP batteries at 48V
30 kW Cummins Propane Generator
We are having an issue that I am having a hard time figuring out. W
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