Steve, you folks still sell the Discover 6650 ? that I use alot. It is
faster than C2, they claim. Not that one would want that offgrid where
long life is required. Pretty amazing battery for winter genset use.
ROLLS S24-2800LFP & S48-6650LFP ESS OPERATING MANUAL
ENHANCED RUNTIME
* Double the high-current runtime of lead-acid battery
* Up to 100% usable capacity
* Up to 100% depth of discharge
EXTENDED SERVICE LIFE
* 10x the life of lead-acid battery (BCI-06)
* Unlimited Partial State of Charge cycles
* 10-year energy throughput warranty (Requires Registration)
FAST CHARGING
* Up to 5x faster than new lead-acid batteries
* Up to 10x faster than aged lead-acid batteries
* 2X faster charging than C/2 Rated lithium batteries
* 1C continuous charge rate, regardless of SoC
SURGE POWER
* Power for off-grid inverter surge demands
* Up to 3C peak power discharge rate
* 1C continuous discharge ra
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 2023-06-28 8:50 am, Steve Higgins via RE-wrenches wrote:
Yes, thanks, Darryl... I did mean the C/2 or C/3 rate...
[1]
Steve Higgins ⋅ Technical Services Manager
t +1.902.597.4020 m +1.206.790.5840
f +1.902.597.8447 e st...@surrette.com
[2] [3] [4] [5]
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On Wed, Jun 28, 2023 at 8:47 AM Starlight via RE-wrenches
<re-wrenches@lists.re-wrenches.org> wrote:
That makes more sense, Darryl, thanks for sharing that. Another good
example, Jay.
We do have batteries that can be charged at 3C but I have only designed
one mobile medical unit with that capability. It required 2 50A shore
power connections or could use the onboard 20kW generator. Makes lots
of heat doing so and heat is battery enemy #1, molten salt batteries
excluded. Lower operating temperatures is a good reason for using lower
C rates.
Larry Crutcher
Starlight Solar Power Systems
On Jun 27, 2023, at 7:49 PM, Darryl Thayer via RE-wrenches
<re-wrenches@lists.re-wrenches.org> wrote:
Hi Jay and all, I belive Steve meant C/2 or C/3; just a typo. My
oldest set of LiFe is almost 10 years? It has a fastest charge rate of
C/0.2 because the 10 kWh is charged by 1.6 kW solar. These batteries
are doing fine. I do not have a way of measuring the current capacity
but
On Mon, Jun 26, 2023 at 3:58 PM Jay via RE-wrenches
<re-wrenches@lists.re-wrenches.org> wrote: Hi All
I'm wondering if minimum charge amps for lithium is common or not?
Or does it have to do with the cell shape: cylindrical vs prismatic vs
pouch?
A client purchased some EG4 batteries and they are getting a bit out of
balanced. Tech support didn't suggest higher volts or longer absorb but
did mention they need 30-50 amps charge. It's not in the manual.
Wondering what you all think and know
Thx
Jay _______________________________________________
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Links:
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[1] http://www.rollsbattery.com
[2] http://www.facebook.com/RollsBattery
[3] https://www.youtube.com/RollsBatteryEngineering
[4] https://www.linkedin.com/company/rolls-battery-engineering
[5] http://www.instagram.com/RollsBattery
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