[RE-wrenches] battery questions.

[jay]

Hi All

Im wondering about a few things as we are talking batteries.

1. how do people feel about the amphenol battery connector vs lugs? A lot of batteries are going that way.  Lots to like about them. 

2. battery cable lengths.  I see both things said, that they have to be the same length or doesn’t matter.  
I did a large fortress system that they wouldn’t warranty unless equal lengths.  Mind you, it would have added about 200’ of 4/0.  I convinced them by using different wire sizes to make the % VD the same and they agreed. 

3. battery lifting attachment points.  300# is really heavy and is it actually more than 2 people can do via OSHA?
What about some threaded holes for lifting rings, or places for straps on the side?

Thanks

jay



> On Feb 3, 2025, at 10:27 AM, Maverick Brown via RE-wrenches <re-wrenches at lists.re-wrenches.org> wrote:
> 
> Bill
> 
> So far I have installed eight of the midnight power flow 16 batteries. 
> 
> The most recent was three on an Outback Radian. 
> 
> I documented that process here, even with settings. 
> 
> https://youtu.be/AwoaTZtHMjU?feature=shared
> 
>  I also connected the Powerflo16 to XW system and the Polyon Tech compatibility shows the details of the BMS nicely. 
> 
> Documented here. 
> 
> https://youtu.be/bfWgmGNrIuE?feature=shared
> 
> I have also made a chart of LiFePO4 settings and would like some feedback, if possible. I basically treat all 16s LiFePO4 batteries the same, Absorb at 3.45 per cell and everything trickles down from their. 
> 
> 
> 
> Thank you,
> 
> Maverick
> 
> Maverick Brown
> Off-Grid Solar Commander since 2006
> Maverick Solar Enterprises, Inc.
>  • Solar Commander Remote Power
>  • SunFlow Systems Cathodic Protection 
> maverick at mavericksolar.com
> 512-460-9825
> 
> 
> 
>> On Feb 2, 2025, at 10:52 PM, Bill Battagin via RE-wrenches <re-wrenches at lists.re-wrenches.org> wrote:
>> 
>> Have any off-gridders done a system with Powerflo16's to power pre-LFP OB/FX inverters?  The FM80's LFP settings in this system are compatible with LFP but I'm looking for options other than using the Aux in the CC's wired to a NC relay and from there to the inverter on/off landings in the green terminal of the OB/FX for the LBCO and reconnect function.
>> 
>>             I've been down this road before, though a different equipment.  I've used the Aux from a Classic for inverter LBCO and reconnect though its never been fully "tested", although I read "open" and closed" at the un-wired aux landing when I forced it with a high LBCO setting.  Just thinking about the highest reliability.
>> 
>>         Thanks in advance.
>> 
>> Bill
>> 
>> Feather River Solar Electric
>> Bill Battagin, owner
>> 4291 Nelson St. (Shipping)
>> 5575 Genesee Rd. (USPS, UPS)
>> Taylorsville, CA  95983
>> 530-284-7849, 258-1641(cell)
>> CA. C10 Lic # 874049
>> Solar Powered since 1982
>> Home of the Sunny Side Up
>> 
>> 
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