Battery from the structure is divided into ordinary and colloidal two, the latter is also known as maintenance free battery. Colloidal battery is the simplest way to add gelling agent in sulfuric acid, sulfuric acid electrohydraulic gelatinous state. Electrohydraulic colloidal cells are usually called colloidal cells. The difference between colloidal batteries and conventional lead-acid batteries is not only the electrohydraulic change to gelatinized. Colloidal battery and ordinary battery the biggest difference is that the top of the ordinary battery has a group of water port, in the purchase must be carefully observed, because some manufacturers use a delicate plastic cover to block the water port. There is an observation hole on the top of the colloid battery, the color of the hole indicates the state of the storage, green is normal, black is the loss of power, white indicates that the battery has been damaged, should be replaced as soon as possible.

Colloidal battery and ordinary battery the biggest difference is that the top of the ordinary battery has a group of water port, in the purchase must be carefully observed, because some manufacturers use a delicate plastic cover to block the water port. There is an observation hole on the top of the colloid battery, the color of the hole indicates the state of the storage, green is normal, black is the loss of power, white indicates that the battery has been damaged, should be replaced as soon as possible.

The main advantages of colloidal battery: high quality, long cycle life. Gel electrolyte can form a solid protective layer around the plate, protective plate to avoid damage due to vibration or collision, rupture, prevent plate corrosion, but also reduce the battery when using large load short circuit between plate and plate bending, not led to the decrease of the capacity, has the very good physical and chemical protection, is twice that of an ordinary lead-acid battery life.

Safe to use, conducive to environmental protection, belong to the real sense of green power. The electrolyte of colloidal battery is solid, sealed structure, gel electrolyte, never leak liquid, so that the proportion of each part of the battery is consistent. The use of special calcium lead tin alloy grid, more corrosion resistance, better charging acceptance. Use ultra-high strength separator to avoid short circuit. Imported high quality safety valve, precise valve control pressure adjustment. Equipped with acid fog filter explosion proof device, more safe and reliable. No acid mist gas precipitation, no electrolyte overflow, no harmful elements to human body in the production process, non-toxic, pollution-free, avoid the traditional lead-acid battery in the use of electrolyte overflow infiltration. The floating charging flow is small, the battery generates less heat, and the electrolyte does not have acid stratification.

Deep discharge cycle performance is good. If the battery is replenished in time after deep discharge, 100% of the capacity can be charged back, which can meet the needs of high frequency and deep discharge. Therefore, it is more widely used than lead-acid batteries.

Self-discharge is small, deep discharge performance is good, charge acceptance ability is strong, up and down potential difference is small, capacitance is large. In the low temperature start ability, charge retention ability, electrolyte retention ability, cycle durability, vibration resistance, temperature change performance and other aspects have been significantly improved. Stored at room temperature of 20℃ for 2 years, it can be put into operation without charging.

Adapt to a wide range of environments (temperatures). Can be used in the temperature range of -40℃- 65℃, especially good low temperature performance, suitable for the northern alpine region. Good seismic performance, can be used safely in all kinds of harsh environment. Not limited by space, can be placed in any position when using.

From the point of view of use, there is no qualitative difference between the two kinds of battery, maintenance free battery in the factory has been electrohydraulic, water battery in the purchase of again.