First, the nature is different

1, lead-acid battery: a kind of battery electrode is mainly made of lead and its oxide, the electrolyte is sulfuric acid solution.

2. Lithium battery: a kind of battery which is made of lithium metal or lithium alloy as anode material and uses non-aqueous electrolyte solution.

Second, different characteristics

1. Characteristics of lead-acid battery:

(1) Safe sealing

During normal operation, the electrolyte will not leak from the battery terminals or housing.

There is no free acid. Special suction partitions hold the acid inside. There is no free acid inside the battery, so the battery can be placed anywhere.

(2) Ventilation system

When the internal pressure of the battery exceeds the normal level, the lead-acid battery will release excess gas and automatically reseals to ensure that there is no excess gas in the battery.

(3) Simple maintenance

Because the gas composite system converts the resulting gas into water, no water is needed during the use of the VRLA cells.

(4) long service life

VRLA batteries with corrosion-resistant lead-calcium alloy enclosures float for 10 to 15 years.

2, lithium battery characteristics:

(1) High energy.

It has a high storage energy density, which has reached 460-600Wh/kg, about 6-7 times that of lead-acid batteries.

(2) Long service life, service life can reach more than 6 years, lithium iron phosphate as a positive battery 1C (100%DOD) charge and discharge, there are 10000 usable records;

(3) The rated voltage is high (the single working voltage is 3.7V or 3.2V), equivalent to the series voltage of three nickel-cadmium or nickel-metal hydride rechargeable batteries, which is easy to form battery power supply.

Lithium battery can be adjusted to 3.0V voltage through the new technology of lithium battery voltage regulator, to adapt to the use of small home appliances.

(4) With high power bearing capacity, lithium iron phosphate battery for electric vehicles can reach 15-30 degrees Celsius charging and discharging capacity, easy to start and accelerate with high strength.

(5) the self-discharge rate is very low, which is one of the most prominent advantages of the battery.

It can be less than 1% per month, less than 1/20 of a nickel metal hydride battery.