oopsi daisy
-------- Original Message --------
Subject: Re: OffList Re: [RE-wrenches] LiFePo4 vs BOS
From: "b...@midnitesolar.com" <b...@midnitesolar.com>
Date: Mon, January 07, 2019 4:09 pm
To: d...@foxfire-energy.com
Snoozing of course means that there is not enough PV input power to do any useful charging and to wait another 5 minutesand try again. That's what I had it doing when it was the MX60 anyway. So, if the FETs blew, seeing snoozing for a whilecould make sense.You didn't CC the others, Dan, if you had meant to.Thanks !boB
On 1/7/2019 1:06 PM, d...@foxfire-energy.com wrote:
An update.. The tech the distributor sent out did miss some inverter adjustments (LBCO and such), but got all the high side settings and pulled the temp sensor.. the zorched battery terminals were from someone the Homo hired to install/ commission the batteries.. Also discovered that although equipment ground and neutral on the ac side was grounded, it does not appear the DC Neg. buss was grounded.. They are using an older OB green steel mounting setup.. As for OB Tech. I'm thinking most of them have forgotten more than I'll ever know.. But as we all know, some are not above making things up.. But the Homo tells me one of the FM60s did go into snooze mode (and never came out) within a day from the time the batteries were installed.. and OB tech told us that was not uncommon.
Kinda looks like it's turning into a huge pissing match..
Thanks for the input everyone
db
-------- Original Message --------
Subject: OffList Re: [RE-wrenches] LiFePo4 vs BOS
From: "b...@midnitesolar.com" <b...@midnitesolar.com>
Date: Mon, January 07, 2019 3:39 pm
To: Howie Michaelson <howie.michael...@gmail.com>,
d...@foxfire-energy.com, Starlight Solar Power Systems
<la...@starlightsolar.com>, jay <jay.pe...@gmail.com>
Happy new year guys ! This is interesting...
Makes no sense that a LiFe BMS would harm a charge controller like the FM60 (or other MPPT CC)UNLESS it maybe all of a sudden SHORTED the output of the CC while it would putting out high power at high PV inputvoltage... I wonder why OB says this is common ? I know they didn't say it was "common" exactly but that's whatI get out of it.
Thanks,boB
On 1/7/2019 11:50 AM, Howie Michaelson wrote:
Good to know Larry. I'm just trying to clarify what Dan is setting and what outback is claiming.Thanks
On Mon, Jan 7, 2019, 2:43 PM Starlight Solar Power Systems <la...@starlightsolar.com wrote:
Howie,_______________________________________________
We have many hundreds of Li battery systems sold and installed. Never had any failure of PV controllers including Outback due to charging Li-ion.
Larry Crutcher
Starlight Solar Power Systems
On Jan 7, 2019, at 11:23 AM, Howie Michaelson <howie.michael...@gmail.com> wrote:
_______________________________________________Hey Dan,Are you saying that OB is claiming that NiFePO4 batteries are smoking their charge controllers? Do they say why? Is this also true of LiFePO4 batteries? If you wouldn't mind mentioning which battery manufacture you are dealing with?Thanks,Howie MichaelsonSun Catcher
On Mon, Jan 7, 2019 at 11:06 AM <d...@foxfire-energy.com> wrote:
I've been asked to trouble shoot a problem with a new set of LiFePO4 batteries on an older OB system.. The customer complained the system would go dark within a few min. of the batt indicator light going yellow.. From what I've gathered so far the BMS of the batteries is shutting down.. The distributor sent out one of their techs, but it looks like they missed a few adjustments.. The biggie is their CC (OB FM60) went into snooze mode within a day of being connected to these guys, and now OB tells me the CC lost it's FETs and that's pretty common with NiFePO4 BMS.. also when the tech came out to commission the bank, one of the terminals on a battery melted and another distorted.. the customer has a few more days to accept the bank, I'm thinking send them back.. Comments?
Dan Brown
Foxfire Energy Corp.
Renewable Energy Systems
(802)-483-2564
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