Flooded lead-acid batteries require maintenance, say, equalization
Although sealed lead acid batteries are maintenance free, they are pretty expensive than flooded ones
Both two types of lead-acid batteries occupy too much space to be set up in all in one solar street lights, which is compact design and with small spaces inside.
Lithium batteries have longer lifespan than lead-acid batteries, six times the number of cycles compared to a lead-acid
Lithium is capable of surviving irregular discharging and maintenance free.
However, manufacturers often use two types of lithium-ion battery
ternary lithium battery, 18650
lithium iron phosphate (LiFePO4) battery, 26650
Difference between them?
Difference between them?
| Diameter (mm) | Length (mm) | Part Number | Typical voltage | The typical voltage of battery package | price | Working temperature | Declared cycle times | |
| Ternary lithium battery | 18 | 65 | 18650 | 3.7v | 11.1v | cheaper | -30 to 65 Celsius | 1500 times |
| LiFePO4 lithium battery | 26 | 65 | 26650 | 3.2v | 12.8v | almost twice the price of 18650 | -10 to 75 Celsius | 1200 times |
Lithium Iron Phosphate (LiFePO4) Battery (LEFT) VS Ternary Lithium Battery (RIGHT)
What kind of lithium-ion battery should I use in my projects?
What we have learned, from the comparison table above, is that LiFePO4 battery is more expensive, but its chemical substance inside is more stable, which makes it kind of high-temperature resistance, while ternary lithium battery is relatively low-temperature resistance, for its materials are more active and can work under 0 Celsius.
So, if your project is in the tropics, LiFePO4 battery is recommended. But if the project is in northern countries, we advise ternary lithium battery.
