4 Grade A Lithium Iron Phosphate cells originally purchased from an ebay seller from China late last year, grade A meaning they were charged to 3.00 volts and put in storage to be used later but was never put into an application. These cells were manufactured late 2019 and can last up to 25 years, the QR code stickers will direct you to varicore home. These batteries were to be implemented in my solar roof amplifier project but arrived too late. Yesterday I finally opened each pack & charged these battery in a 12.8v series configuration to 13.6v and discharged them to 12.0v, the voltages difference were 0.01 volt apart to ensure the batteries resistance were the similar when charged and discharged. $350 free shipping to anywhere in the US, ready to be shipped. Any questions, feel free to ask. 35 mm thickness 135 mm width 192 mm height
100Ah capacity each, or total? What nominal float charge and operating voltage for these puppies? Thanks.
100 AH 3.2 V per cell as subject states. There is no nominal float voltage charge or constant charge value on LifePO4 batteries as they are not the typical Li-ion, AGM and etc, which would experience quicker gradual SOC loss compared to LifePO4. Journal of The Electrochemical Society study found that LifePO4 battery loses 6% SOC over 9 months when battery SOC is stored within 80% to 100% range and 3% loss @ 70% to 40% SOC. If your application requires a float charge voltage value, set it to 3.3v per cell as this is approximately 80% SOC. When charged to 80%, these LifePO4 prismatic cells will operate 3.2v under normal loads.
Yes sir patriots owner, still available. Send private message if interested and feel free to ask questions. I will post a notification when no longer available.
