We had a box of random Lifepo4 cells laying around and found these 4 cells. Appears to be 3.2v 20ah cells and I found some info below. Selling at just $10 per cell since these are untested. They all have voltage so they are definitely working however they have not been capacity tested.
Lithium Iron Phosphate (LiFePO4 also called LEP Battery) is kind of Li-Ion rechargeable battery for high power applications, such as EV car, E-scooter, E-bike and E-boat. LFP cells feature with high discharging current, non explosive, long cycle life (>firstname.lastname@example.orgC rate, IEC Standard), but its energy density is lower than normal Li-Ion cell (Li-Co) (higher NiMH cell). LFP cell has 3.2V nominal working voltage and shall be cut-off power at 3.6-3.8V per cell during charging. Please see the table below to see comparison between LFP and other rechargeable batteries. LFP battery has the lowest cost if considering its long cycle life.
Hybrid electric car, electric vehicle, E-scooter, E-bike, E-boat, storage system for green energy (solar cell, fuel cell), and UPS system. Lithium-ion battery is a green product and is considered to be the best substitutes for Lead-Acid Storage Battery.
Electric vehicles (EV) will play an important role in the automobile industry in the foreseen future, in which the battery is a very important key component. The traditional lead-acid battery, not only cause high degree of pollution, it also features with low efficiency. Lithium iron phosphate batteries, with features of high safety, stable power output, fast charging capability, can be discharged by an instant large voltage current, long lifecycle, high energy density, and consistent with requirements of green energy, is the best battery for EVs.
Advantages of LiFePO4 Battery
1. The best substitutes for Lead-Acid Storage Battery.
2. Lower Pollution and environment friendly
3. High Safety, no fire, and no explosion
4. Aluminum Can Design, Light Weight
5. Strong instant peak power
6. Wide working temp. range
7. Long Life Cycle
8. Fast Charge