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The 2 most important parameters impacting the performance of a battery  |  Cycle life  |  Self discharge  |  Technology comparison  |  Battery pack configurations
Technology comparison
Not each technology is suitable to do what is requested. In the table below you can see how the different technologies compare to each other on several parameters. Although Uniross does not do Lead Acid (Pb/VRLA) batteries, we have added it in our comparison as there are many misunderstandings about this technology.




Technology
Pb/VRLA
NiCd
NiMh
Li-Ion Pol
Battery Performance Volumetric Energy Density (wh/l)
-
+
++
+++
Gravimetric Energy Density (Wh/Kg)
--
+
+
+++
Discharge Voltage
2.0V
1.2V
1.2V
3.7V
Maximum Discharge Current
-
++
++
++
Discharge Voltage Profile
Inclination
Flat
Flat
Flat
Charge Retention
++
-+
--
++
Cycle life
-
++
++
++
Memory effect
++
--
+
++
Overcharge Ability
-
++
-/+
-
Over Discharge Ability
--
++
-+
-+
Fast Charge Ability
-
+
+
+
Performance below 0°C
-
+
+
+
Charging Method/ -Termination
CCCV
Various
Various
CCCV
++
+
+
++
Internal Resistance
+
++
-+
+
Safety
-
+
+
-
Environmental Impact
--
--
-+
+
Recycling
--
-+
-+
-+
Price Cost per Wh
+++
++
++
+
Form-Factor Types Available
Prismatic
Cylindrical
Prismatic
Prismatic
Cylindrical
Thinnest Version On Market
>250mm
11.5mm
7.8mm
1mm



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