NMC (Lithium Manganese Nickel) Battery Cell

How long is the real life of lithium ternary battery in general?

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When the lithium-ion temperature is higher than 300 &#; the capacity of the battery will continue to decrease, then the ternary lithium battery can not escape this law, so away from the store when the appropriate and room temperature of the working state of use lithium batteries can be better to extend the service life of lithium batteries, and secondly, you need to ensure that the battery will not be charging at too high a temperature.

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When the ternary Li battery long-term storage and deep charging and discharging situations will also have a certain impact on the life and capacity. The average lifespan of lithium ternary batteries is about times, and the actual lifespan can reach times (according to the use of the situation and judgment).

I did a capacity test on two cells of 3.65V down to 2.5V at 7A (approx .5C) and one came at at 13.4AH and the other 13.5AH. The battery got warmer than ambient but not by much, I could barely detect a difference by feel.

The copper tabs are the best feature, I found I could solder them with my Weller D550 260W soldering gun with no problem - sand the tabs to bright copper, add a little dab of flux and a drop of solder held on the gun for 30 seconds and then touched to the tabs and it adhered and spread out immediately. I was then able to tin and solder a 12 gauge wire onto the cell. My 100W soldering gun was NOT enough to solder these with.

At $8 bucks they're still a hell of a buy, but just know you're not really buying 15AH cells and they've got a 14% failure rate right out of the box.

Presented below beside a Headway 8AH as a comparison. Positive and Negative aren't marked so I put a black line around one end for the negative.

Received 36 cells and 5 cells were either bad or marginal: 3 were completely bad with .021V 1.8V and 2.1V, the marginals had 2.77 and 2.8V - since all the others were 3.0-3.11v (almost all 3.05-3.08V with a few outliers) the marginals had obviously self-discharged and are not something I want to use. A 14% failure rate. The copper tabs were oxidized so these werent new cells right off the assembly line.I did a capacity test on two cells of 3.65V down to 2.5V at 7A (approx .5C) and one came at at 13.4AH and the other 13.5AH. The battery got warmer than ambient but not by much, I could barely detect a difference by feel.The copper tabs are the best feature, I found I could solder them with my Weller D550 260W soldering gun with no problem - sand the tabs to bright copper, add a little dab of flux and a drop of solder held on the gun for 30 seconds and then touched to the tabs and it adhered and spread out immediately. I was then able to tin and solder a 12 gauge wire onto the cell. My 100W soldering gun was NOT enough to solder these with.At $8 bucks they're still a hell of a buy, but just know you're not really buying 15AH cells and they've got a 14% failure rate right out of the box.Presented below beside a Headway 8AH as a comparison. Positive and Negative aren't marked so I put a black line around one end for the negative.

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