Mick,
The SunExtender technical manual says to charge at 2.385 ± 0.015 volts
per cell at 25°C until the charge current drops to 0.5% of the battery
capacity. That's 28.6 ±0.2 volts for a 24 volt system and 28.8 volts is
the top end of that range. If you are seeing signs that the batteries
hav
Hi Mick,
While I don't know what SG they are using in those batteries, I'd say the
voltage was too high at 28.8.
If it was a standard SG then it would be gassing at 28.8 and starting to dry
out the batteries.
( do the batteries look concave?)
The OBCC FM does a rebulk adjustment setpoint, but
An earlier post alluded to "minimal value" of old PV making it a less likely
target. In my case, neither age nor condition of the PV proved to be a
deterrent.
I had 40 Arco 16-2000 PV (30+ year-old PV) in a 1200 watt array (40 modules)
in use at my off-grid home, and someone stole 20 of the PV th
Greetings, All~
My client's string of SunXtender two volt AGM's won't hold a charge...after
only two years! The prior AGM batteries also turned to toast prematurely.
There must be a better way, so could we review the Outback charge
setpoints?
Side note: Delta-v from the highest 2v cell to the low
Off grid systems definitely get stolen, not only modules, but inverters, and
even batteries. Off grid gear probably gets split up and reused by other off
grid persons nearby, or used on RVs/ buses traveling through. I would think
very few are reused on GT systems. The modules are rarely reuse
I just either get the entire system (remote, BMK) installed or I just don't
do it.
It may sound counterproductive but 60-80% of the time I get a call fairly
soon when they catch on that it's all or nothing.
They are happier in the long run and I can get intelligent answers when they
call.
E
We installed an 8 Kw system in the Coachella Valley back in 2006, for a museum
in Desert Hot Springs. It was a ground mount system behind a sand dune behind
the museum. There was really no other place to put it. Since it was a
relatively "High Crime" area we advised theft proof hardware. They op
I have one customer that has built his own system using an old woodstove with a
series of buried interconnecting 4" air pipes and small computer fans that he
picked up in a surplus store. It needs some tlc on a regular basis but at 4500'
in the mountains of western British Columbia (i.e. pretty
Hi Jay;
When customers don't buy the Magnum remote meter, I program and test their
inverter with mine, then bring it home. Then they can pay me to come back
if changes in programming are needed (rare) or (more common) new equipment
is added.new generator, battery monitor, etc.
I always recomm
Hi Dan,
I've got to ask, if some customers don't buy those two things, I presume they
have to pay you for the service call to make any adjustments?
And, how do you tell them to operate the battery bank without a amp hr meter?
I'm always curious about how others do this.
thanks,
jay
peltz powe
That's great news on the webinar, I'll sign up. I've never had any issues
with selecting amongst the Magnum remote varieties, though sometimes it
takes a second read of their literature.
I usually keep a Magnum remote in my tool box;. Some customers just DO NOT
want to pay for the remote, just lik
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