This is the way any battery designed for off grid use should be set up.
Life Blue may be a small supplier, but they are technically way ahead of
the Li+ pack on monitoring, BMS, and cold weather operation.
SOC: No complicated comm, just blue tooth on a phone, don't even need
cell service. It works, even before you unpack the battery.
BMS: can mostly accept default lead acid controller and inverter
settings, so no weird compatibility issues. Just swap batteries.
Heating: just optimizes the PV to do the job, no external fuss.
In the end, as fancy as these are on the inside, they literally are just
a drop-in replacement for an equivalent 12 v lead acid battery, even the
same form factor. Their only problem is they don't come in 24 and 48 v
offerings.
Full Disclosure: I am not affiliated in any way with LiFe Blue, I just
appreciate good practical engineering. Other manus seem to have almost
zero desire to listen to wrenches and improve their designs.
Ray Walters
Remote Solar
303 505-8760
On 6/6/21 1:31 PM, la...@starlightsolar.com wrote:
The problem with Battle born heated battery is that it was an after
thought. It uses power from the battery to heat itself and may fully
discharge the battery.
LiFeBlue battery does not use any energy from the battery for heating.
It also has an advanced BMS-heater controller that can pass low
current, up to 0.07C, directly to the cells so early morning PV solar
power is fully utilized until enough charge current is available to
turn on the internal heater. In addition to all batteries having
Bluetooth SoC monitoring built in, the Version 3 batteries have dual
modbus ports for developing communications and control.
https://www.lifebluebattery.com/rv-boat-low-temperature-lithium-ion-batteries/300ah-d-lt-lithium-battery.html
<https://www.lifebluebattery.com/rv-boat-low-temperature-lithium-ion-batteries/300ah-d-lt-lithium-battery.html>
Larry Crutcher
Starlight Solar Power Systems
(Disclosure: I have a financial interest in LiFeBlue Battery)
On Jun 5, 2021, at 4:52 PM, Chris Worcester <ch...@solarwindworks.com
<mailto:ch...@solarwindworks.com>> wrote:
Check out Battle Born Batteries out of Reno, they have heater kits
available for their LiFePO4 100 ah batteries. Just came out with a 280
ah 8D size, don't see a heater kit for it yet. Will check back in with
them soon to see if it's on the shelf.
Chris Worcester
Solar Wind Works
NABCEP PV Installation Professional
Cell 530-448-9692
www.solarwindworks.com <http://www.solarwindworks.com>
ch...@solarwindworks.com
-----Original Message-----
From: RE-wrenches <re-wrenches-boun...@lists.re-wrenches.org> On
Behalf Of Dave Angelini Offgrid Solar
Sent: Friday, May 21, 2021 12:33 PM
To: RE-wrenches <re-wrenches@lists.re-wrenches.org>
Subject: Re: [RE-wrenches] LiFePo4 Low Temp Charging Damage
I can think of a few other things for the wish list! l Closed loop
charging with multiple sources.
Robust BMS design to not be a new source of power failures Offgrid.
Spare BMS for sale with product that is servicable.
Gets Soc and temp into Insight and Optics A company that will be there
when I need them. Too many players in the battery game right now that
I do not know of! Only a few that do most all of these for me.
Friday !
Dave Angelini Offgrid Solar
"we go where powerlines don't"
http://members.sti.net/offgridsolar/
e-mail offgridso...@sti.net
text 209 813 0060
On Fri, 21 May 2021 12:24:11 -0400, Ray <r...@solarray.com> wrote:
This is the only company I know of that has dealt with the low
temperature charging issue. Its a great product, and the blue tooth
monitoring is an excellent feature too. This is what the other Li+
batteries should be doing. The big down side is they are currently
limited to 12v. Wish they made a 48v pack.
https://www.lifebluebattery.com/rv-boat-low-temperature-lithium-ion-batteries/index.html
Ray Walters
Remote Solar
303 505-8760
On 5/21/21 12:12 PM, Larry wrote:
My personal opinion is that you should not buy any lithium battery
that does not provide adequate protection for all modes of operation.
Freezing does not damage the battery; charging a frozen battery may
damage it quickly. Trickle charging the battery is not the solution.
There are two solutions: provide a heat source to keep the batteries
above freezing or incorporate a temperature controller to disable the
charger if the battery is unsafe to charge.
Larry Crutcher
On May 21, 2021, at 8:44 AM, Mark Frye <ma...@berkeleysolar.com>
wrote:
Folks,
If I have a charger that does not have low battery charge cut-off, I
can get in trouble if I have a frozen pack and apply a charging
voltage.
But, if I start with a pack that is above freezing and keep a
trickle charge on it, can I keep that pack safe from freezing and
damage?
Or at some point, as ambient temperature drops, the pack will freeze
and be damaged anyway?
Thanks,
Mark Frye
_______________________________________
_______________________________________________
List sponsored by Redwood Alliance
Pay optional member dues here: http://re-wrenches.org
List Address: RE-wrenches@lists.re-wrenches.org
Change listserver email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
There are two list archives for searching. When one doesn't work, try
the other:
https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/
http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
List rules & etiquette:
http://www.re-wrenches.org/etiquette.htm
Check out or update participant bios:
http://www.members.re-wrenches.org
_______________________________________________
List sponsored by Redwood Alliance
Pay optional member dues here: http://re-wrenches.org
List Address: RE-wrenches@lists.re-wrenches.org
Change listserver email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
There are two list archives for searching. When one doesn't work, try
the
other:
https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/
http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
List rules & etiquette:
http://www.re-wrenches.org/etiquette.htm
Check out or update participant bios:
http://www.members.re-wrenches.org
_______________________________________________
List sponsored by Redwood Alliance
Pay optional member dues here: http://re-wrenches.org
List Address: RE-wrenches@lists.re-wrenches.org
Change listserver email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
There are two list archives for searching. When one doesn't work, try
the other:
https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/
http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
List rules & etiquette:
http://www.re-wrenches.org/etiquette.htm
Check out or update participant bios:
http://www.members.re-wrenches.org
_______________________________________________
List sponsored by Redwood Alliance
Pay optional member dues here: http://re-wrenches.org
List Address: RE-wrenches@lists.re-wrenches.org
Change listserver email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
There are two list archives for searching. When one doesn't work, try
the other:
https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/
http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
List rules & etiquette:
http://www.re-wrenches.org/etiquette.htm
Check out or update participant bios:
http://www.members.re-wrenches.org
_______________________________________________
List sponsored by Redwood Alliance
Pay optional member dues here: http://re-wrenches.org
List Address: RE-wrenches@lists.re-wrenches.org
Change listserver email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
There are two list archives for searching. When one doesn't work, try the other:
https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/
http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
List rules & etiquette:
http://www.re-wrenches.org/etiquette.htm
Check out or update participant bios:
http://www.members.re-wrenches.org
_______________________________________________
List sponsored by Redwood Alliance
Pay optional member dues here: http://re-wrenches.org
List Address: RE-wrenches@lists.re-wrenches.org
Change listserver email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
There are two list archives for searching. When one doesn't work, try the other:
https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/
http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
List rules & etiquette:
http://www.re-wrenches.org/etiquette.htm
Check out or update participant bios:
http://www.members.re-wrenches.org
