Which Is Better, Lithium Iron Phosphate Battery Pack Or Lead-acid Battery?
Oct 04, 2023
Lithium iron phosphate battery pack VS lead-acid battery, which one is better? If the two compete, they will fail. Just like the performance comparison between lithium iron phosphate battery packs and lead-acid batteries, it has always been a hot issue that people pay attention to. So who is more powerful? We will have a good analysis in this article.
Lithium iron phosphate battery pack and lead-acid battery
Volume:
Lead-acid batteries are larger, generally weighing about 15-30 kilograms.
Lithium iron phosphate batteries are relatively small in size, generally weighing between 2.5 and 3.0 kilograms.
Energy density ratio:
Under the same volume, the energy density of lithium iron phosphate batteries is 3-4 times that of lead-acid batteries, 2.5 times that of nickel-cadmium batteries, and 1.8 times that of nickel-metal hydride batteries. Therefore, with the same battery capacity, lithium-ion batteries are smaller and lighter than lead-acid batteries, nickel-cadmium batteries, and nickel-metal hydride batteries.
Service life:
The cycle life of lead-acid batteries is approximately 300 times that of ordinary batteries.
The lithium iron phosphate battery pack can be charged and discharged at 1C at room temperature. The capacity of the monomer is still greater than 80% after 2,000 cycles, and the 3C cycle life reaches more than 800 times. Lead-acid batteries have high requirements on ambient temperature, and their service life is less than 5 years under harsh ambient temperatures. Lithium iron phosphate batteries have a longer service life under the same conditions.
Security features:
Lead-acid batteries. Lead-acid batteries can explode under strong impact, posing a threat to customer safety.
Lithium iron phosphate battery pack: Lithium iron phosphate battery completely solves the safety problem of lithium cobalt oxide and lithium manganate. Lithium cobalt oxide and lithium manganate will explode under a strong knock, and lithium iron phosphate It has passed strict safety tests and will not explode even under violent blows.
Environmental protection:
Lead-acid batteries for electric vehicles contain a large amount of lead, which can pollute the environment if not handled properly.
Lithium iron phosphate material does not contain any heavy metals and rare metals, is non-toxic, is pollution-free in both production and use, and complies with European RoHS regulations. As a green battery, it has become the focus of attention.
Application protection:
Lead-acid batteries often have some failures, so daily maintenance is frequent and the maintenance cost will also increase.
The lithium iron phosphate battery pack does not need to be protected often because its function is very stable and only requires regular inspection and testing every day.
Temperature range:
Lead-acid batteries can be used in -20-50 temperature scale and have low self-discharge.
The thermal peak of the lithium iron phosphate battery pack is 350~500, the operating temperature is relatively large (-20~+75), and it can still release 100% at high temperatures (60°C).
Charging power:
Lead-acid battery, GM lead-acid battery charger, at 100%, charging time will be within 8 to 10 hours.
Due to the high data and electrolyte activity of lithium-ion batteries, lithium ferric acid battery packs can be charged quickly and can be charged and discharged quickly at a high current of 2C. Under a special charger, the battery can be charged 1.5C in 40 minutes, and the starting current can reach 2C.
No recall effect:
Lead-acid batteries have a recall effect. Rechargeable batteries are often operated under full operating conditions, and their capacity will quickly fall below the rated capacity value.
Lithium iron phosphate battery packs do not have this phenomenon. No matter what state the battery is in, you can use the impulse. Do not put it away completely before charging.
Production technology:
The labor cost of lead-acid batteries is generally 10%~20%.
Due to the production process, the cost of lithium-ion batteries is relatively large. Among the production costs, the labor cost of lithium-ion batteries accounts for more than 40%.
Price:
The current mainstream battery on the market is 48 volts. Assuming it needs to be replaced, lead-acid batteries cost around 380-450 yuan (48v12ah-48v20ah), and the warranty period is 1 year.
Lithium-ion batteries are relatively expensive, about 1,000 yuan (48V12AH), but their warranty is 2 years.
The current packaging price of lithium iron phosphate batteries is about three times more expensive than lead-acid batteries. However, based on the service life analysis, with the same investment, the service life of lithium-ion batteries is still longer.
So, this is the end of the comparative analysis of lithium iron phosphate battery packs and lead-acid batteries. I believe you all understand that lithium-ion batteries have more functional advantages than lead-acid batteries.
