什么是电池、电源？
电池一般指将化学能转变为电能的装置。电源指把其他形式的的能量转变为电能的装置；在电子设备中有时也把变换电能的装置（如整流器、变压器等）也称为电源。
什么是阀控式免维护铅酸蓄电池?
免维护铅酸蓄电池是相对于传统需要定期加酸加水的蓄电池（如汽车蓄电池）而定义的，免维护铅酸蓄电池的·基本特点是使用期间无需加酸、加水，电池为密封结构，不漏酸，无酸雾，电池上设有单向排气安全阀，当电池内部气体压力超过一定值，安全阀自动打开，排出气体，自动关闭，常规状态下安全阀是密闭的。
常用的阀控式免维护铅酸蓄电池有那些种类？
按技术可分为分通用型（AGM）与胶体（GEL）两类铅酸蓄电池。AGM电池采用玻璃纤维棉(Absorbed GlassMAT)做隔板,贫液式电解液设计（电解液吸附在极板与隔板中，电池内无流动电解液）。GEL(胶体)采用二氧化硅做凝固剂，电解液吸附在极板和胶体内。
按使用用途可主要分为：起动型蓄电池、固定型、牵引动力型等。
What are batteries and power supplies?
A battery generally refers to a device that converts chemicalenergy into electrical energy. Power supply refers to a device thatconverts other forms of energy into electrical energy; Inelectronic devices, devices that convert electrical energy (such asrectifiers, transformers, etc.) are sometimes referred to as powersources.
What is a valve controlled maintenance free lead-acidbattery?
Maintenance-free lead-acid batteries are defined relative totraditional batteries that require regular acid and water addition(such as automotive batteries). The basic feature of maintenancefree lead-acid batteries is that they do not require acid or wateraddition during use. The battery is a sealed structure, withoutacid leakage or acid mist. The battery is equipped with a one-wayexhaust safety valve. When the internal gas pressure of the batteryexceeds a certain value, the safety valve automatically opens,discharges gas, and then automatically closes, Under normalconditions, the safety valve is sealed.
What are the commonly used types of valve controlled maintenancefree lead-acid batteries?
According to technology, lead-acid batteries can be divided intotwo types: general purpose (AGM) and colloidal (GEL). The AGMbattery uses Absorbed Glass MAT as a separator, with a leanelectrolyte design (the electrolyte is adsorbed between theelectrode plate and the separator, and there is no flowingelectrolyte inside the battery). GEL (colloid) uses silica as acoagulant, and the electrolyte is adsorbed on the electrode plateand colloid.
According to their usage, they can be mainly divided intostarting type batteries, fixed type batteries, traction power typebatteries, etc.