[RE-wrenches] Lithium battery charge rate
Steve Higgins
steve at surrette.com
Wed Jun 28 10:12:23 PDT 2023
No, we don't. When you quickly charged those, we found they wouldn't
balance well (Open Loop Comms). You may be able to do it, but in some
systems, we found issues.
I don't usually discuss marketing here, as I try to avoid it... But the
question was asked. The R Series and the Upcoming S Series batteries are
ours manufactured in the same contract mfg plants we manufacture our AGM
batteries.
Over the past few years, we have released the "R Series," which are Drop-in
replacements for G24, G27, G31, 8D, and 4D sizes. These have a Bluetooth
Application for Android devices that you can use to check SOCs, errors...
etc...
In the next few months, we will release the "S Series" Products... Here are
a couple of screenshots of some of the information on them. I expect that
we will be displaying these at RE+ in Vegas...
[image: image.png]
[image: image.png]
[image: image.png]
Contact me offline if you have any further questions.
<http://www.rollsbattery.com> <http://www.rollsbattery.com>
<http://www.rollsbattery.com> <http://www.rollsbattery.com>
<http://www.rollsbattery.com> <http://www.rollsbattery.com>
<http://www.rollsbattery.com> <http://www.rollsbattery.com>
<http://www.rollsbattery.com> <http://www.rollsbattery.com>
<http://www.rollsbattery.com> <http://www.rollsbattery.com>
<http://www.rollsbattery.com> <http://www.rollsbattery.com>
<http://www.rollsbattery.com> <http://www.rollsbattery.com>
<http://www.rollsbattery.com> <http://www.rollsbattery.com>
Steve Higgins ⋅ Technical Services Manager
t +1.902.597.4020 m +1.206.790.5840
f +1.902.597.8447 e steve at surrette.com
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On Wed, Jun 28, 2023 at 9:56 AM Dave Angelini Offgrid Solar via RE-wrenches
<re-wrenches at lists.re-wrenches.org> wrote:
> 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/ <http://members.sti.net/offgridsolar/>
> e-mail offgridsolar at sti.net <offgridsolar at 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...
>
>
> <http://www.rollsbattery.com>
> Steve Higgins ⋅ Technical Services Manager
> t +1.902.597.4020 m +1.206.790.5840
> f +1.902.597.8447 e steve at surrette.com
> <http://www.facebook.com/RollsBattery>
> <https://www.youtube.com/RollsBatteryEngineering>
> <https://www.linkedin.com/company/rolls-battery-engineering>
> <http://www.instagram.com/RollsBattery>
> ------------------------------
> CONFIDENTIALITY: The information transmitted herein is intended only for
> the addressee and may contain confidential, proprietary and/or privileged
> material. Any unauthorized review, distribution or other use of or the
> taking of any action in reliance upon this information is prohibited. If
> you receive this email in error, please contact the sender and delete or
> destroy this message and all copies.
> ------------------------------
>
> On Wed, Jun 28, 2023 at 8:47 AM Starlight via RE-wrenches <
> re-wrenches at 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 at 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 at 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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