Lead-acid maintenance-free battery
The biggest feature is "maintenance-free". Compared with lead-acid batteries, the consumption of electrolyte is very small, and there is basically no need to add distilled water during the service life. It also has the characteristics of shock resistance, high temperature resistance, small size and small self-discharge.

Ordinary lead-acid battery
The battery is mainly composed of a tubular positive plate, a negative plate, an electrolyte, a separator, a battery tank, a battery cover, a pole, and a liquid injection cover. The main advantages are stable voltage and cheap price; the disadvantages are low specific energy (that is, the electric energy stored per kilogram of the battery), short service life and frequent daily maintenance.
Gel battery
The colloidal lead-acid battery is an improvement of the ordinary lead-acid battery with liquid electrolyte. The sulfuric acid electrolyte is replaced by the colloidal electrolyte, which is improved compared with ordinary batteries in terms of safety, storage capacity, discharge performance and service life.
Alkaline NiCd Batteries
Nickel-cadmium battery is an alkaline battery in which the positive active material is mainly made of nickel, and the negative active material is mainly made of cadmium. The positive electrode is nickel hydroxide, the negative electrode is cadmium, and the electrolyte is potassium hydroxide solution. Its advantages are light weight, shock resistance and long life, and are often used in small electronic equipment.