Re: [RE-wrenches] Lithium battery charge rate

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 *

Re: [RE-wrenches] Lithium battery charge rate

Yes, thanks, Darryl... I did mean the C/2 or C/3 rate...

Re: [RE-wrenches] Lithium battery charge rate

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

Re: [RE-wrenches] Lithium battery charge rate

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

Re: [RE-wrenches] Lithium battery charge rate

Jay, I do not know/use this brand. Got this off the internet. Looks to me like they are telling you max charge is 100A but max life is 30 - 50a charge. only a 5 year warranty so Good Luck ! Voltage 51.2V Capacity 100Ah Charging Voltage (Bulk/Absorb) 56.2V (+/- 0.2V) Float 54V (+/-

Re: [RE-wrenches] Lithium battery charge rate

These are 100 amp hr eg4 48v  batteries. Tech support said their recommended charge rate per battery is 30-50 amps. I asked because Ive never heard this and it still doesn’t sound correct. All of the responses have been consistent and I will try to get someone higher up to review all this and

Re: [RE-wrenches] Lithium battery charge rate

For many LFP batteries, while some say you can charge at the C1 Rate, most want you to charge at the C2 or C3 rate. While you don't have to get them full all the time like lead, as long as you are cycling regularly, it is still a good idea to get them to full regularly. Now if they are a backup

Re: [RE-wrenches] Lithium battery charge rate

Hi Jay, Larry says is correct. My experience, with cells and there BMS is they need to get up to top balance voltage then the BMS will stop charging the full cells and bring the remainder of cells up to fill charge. My oldest set is about 6 years old, since I understood they have been fine On

Re: [RE-wrenches] Lithium battery charge rate

Hi Jay, For our LFMP and LFP batteries, it has never mattered. As long as current is flowing, the SoC is increasing and the voltage will rise until it reaches the CV set point. Typically cell balance occurs when a cell voltage reaches a set point where a load turns on across that cell.

[RE-wrenches] Lithium battery charge rate

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