Lithium Notes
COMPARISON DATA AMONG VARIOUS LITHIUM BASE BATTERIES
Safety

CYCLE LIFE

POWER
WEIGHT
DENSITY
LONG
TERM
COST

Temperature Range

LiFePO4
Lithium iron phosphate battery
Excellent
Safest and most envirofriendly among all the listed groups
Excellent Cycle life can be as long as over 5,000 cycle, best among all the listed groups. Acceptable
Excellent
Most economic


Excellent
(can be discharged at -45~ 70 Centigrade)
LiCoO2
Lithium cobalt oxide
Very unstable, must handle with extremely care, it might explode or catch fire under collision, over-charged, short circuit or when heat build-up.
Acceptable Cycle life only up to 300~500 cycle. Not good for high C-rate discharge. Good High > Decayed beyond 55 ~ -20 Centigrade 
LiMn2O4 Have to handle with care, or it might explode or catch fire under collision or over-charged. Unacceptable Cycle life only up to100~800 cycle, depending on the discharge C-rate. Acceptable Acceptable High
Li(NiCo)O2 Very unstable, must handle with extremely care, it might explode or catch fire under collision, over-charged, short circuit or when heat build-up. Acceptable Cycle life can be 300~500 cycle. Not good for high C-rate discharge. Good High Decayed extremely fast over 55~ -20 Centigrade

REMARKS

1. Although, Lead Acid battery is lower in cost and safety acceptable; however, with extremely toxic, worse for the environmental concern, short cycle life, heavy in weight, therefore, we don't put it in this a group for comparison.
2. Nickel Hydride battery has a characteristic of low Power Weight Density, decayed faster under the high temperature, worse in memory effect, not suitable for high output usage.
3. The Lithium Iron Phosphate Battery has been proven as the most environmental friendly battery. It is the safest and most suitable for high output usage. It is also the best for storage battery usage. It is not necessary to use the equalizer and the protecting PC Board module.