Hi Chris,
I recently found myself in a similar situation with an existing 24V system
with a 24v fridge and 12v freezer. The client wanted to upgrade to LiFePO4
so I decided that it would be easier and cheaper to go 48v. I used the
Samlex IDC 360-C24 and IDC 360-C12 DC to DC converters to take the
; Cell 530-448-9692
>> www.solarwindworks.com
>> ch...@solarwindworks.com
>>
>> From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On
>> Behalf Of Tom Duffy
>> Sent: Wednesday, January 01, 2020 8:55 AM
>> To: RE-wrenches
>> Subjec
Chris,
I have a 12vdc sunfrost fridge and a few 12v receptacles left over from
the 12v days and I did the same as your customer with 2L16’s and a few
panels and backed it up with an Iota charger plugged into an AC outlet
powered by my 48v Outback inverter. Then I discontinued the dedicated Pv
www.solarwindworks.com
ch...@solarwindworks.com
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf
Of Ray
Sent: Thursday, January 02, 2020 3:24 PM
To: re-wrenches@lists.re-wrenches.org
Subject: Re: [RE-wrenches] combining 24v and 12v systems
How do you insure
-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org]
*On Behalf Of *Tom Duffy
*Sent:* Wednesday, January 01, 2020 8:55 AM
*To:* RE-wrenches
*Subject:* Re: [RE-wrenches] combining 24v and 12v systems
Agree! use a Victron DC to DC Converter
Kind regards
**
*Tom Duffy*
*/Senior Solar
enches
Subject: Re: [RE-wrenches] combining 24v and 12v systems
Agreed: no 12v tap. I’ll add (with modest experience, as this doesn’t come up
as an upgrade very often any more) that Mean Well, despite the odd name, proved
itself pretty reliable in some early Wattsun tracker drives and some oth
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From: RE-wrenches On Behalf Of
Allan Sindelar
Sent: Tuesday, December 31, 2019 6:51 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] combining 24v and 12v s
Wrenches
I have to agree with Dana, battery imbalance is alway an issue, add in a
mid tap load and failure is in your future, l have also seen this done and
it never works as you might hope.
Jerry
On Tue, Dec 31, 2019, 12:46 PM Dan Fink wrote:
> I second everyone. Center-tapping a 24 or 48v batt
Agreed: no 12v tap. I’ll add (with modest experience, as this doesn’t come up
as an upgrade very often any more) that Mean Well, despite the odd name, proved
itself pretty reliable in some early Wattsun tracker drives and some other
DC-DC applications. Available online; see
https://www.meanwell
es On Behalf Of Dan
Fink
Sent: Tuesday, December 31, 2019 1:46 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] combining 24v and 12v systems
I second everyone. Center-tapping a 24 or 48v battery bank for 12v SEEMS like
it should work just fine, especially for low load infrequent use like a 12v
I second everyone. Center-tapping a 24 or 48v battery bank for 12v SEEMS
like it should work just fine, especially for low load infrequent use like
a 12v water pressure pump for a greenhouse, a weather station, etc.. Nope,
I've been a loser every time, with that battery or pair always the first to
Even with battery balancers, battery tapping is still a really bad
idea. I know, I did it on my own system in the 90s. The DC/DC
converters are the way to go, but be sure and over size it by a fair
amount to handle the fridge starting surge. Unfortunately my favorites
are no longer available:
Hi Chris
Agreed.
12v from either a balancer or iota
Happy new yr
Jay
> On Dec 31, 2019, at 8:52 AM, Chris Schaefer wrote:
>
>
> G'day and Happy New Year to All,
>
> Recently came across this offgrid OB FX system. The first part is a 12v
> battery system w/ 2 PV modules, 2 Trojan L16 bat
Tapping a battery bank is not a good practice. it will unbalance the
bank. Much better to add a 24V electronic converter for the 12V loads. Then
replace the 12V loads when time permits. They will need a spare converter
so buy 2. Amazon has tons of these converters. Your quote is great BTW. H N
Y
ent: Tuesday, December 31, 2019 11:52 AM
To: RE-wrenches<mailto:re-wrenches@lists.re-wrenches.org>
Subject: [RE-wrenches] combining 24v and 12v systems
G'day and Happy New Year to All,
Recently came across this offgrid OB FX system. The first part is a 12v battery
system w/ 2 PV modules,
G'day and Happy New Year to All,
Recently came across this offgrid OB FX system. The first part is a 12v
battery system w/ 2 PV modules, 2 Trojan L16 batteries used to power a
frig and freezer about 6 years old. The second is a 24v with 3kw of PV, 4
Trojan L16's, twin OB FX inverters installed by
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