VRLA is a battery made of electrodes mainly made of oxide oxides, electrolyte, electrolyte, sulfuric acid solution, and sulfuric acid solution. When the lead battery is discharged and charged, the important components of the positive and negative electrodes are lead calcium acid.
When judging the quality of a lead-acid battery, there are several key factors to consider:
1.Capacity: The capacity of a battery, measured in ampere-hours (Ah), is an important indicator of its quality function. Higher capacity batteries are usually able to provide more power, higher operating current, and run longer. The backup battery of our UnitedStar Rechargeable fan has a normal capacity of 4Ah~7Ah, and it can still work for 7~15 hours when you are faced with a disconnection of the mains power supply (different gears and different usage times), which can meet your needs. The electricity demand of the product, let you spend the hot summer safely.
2.Voltage: The voltage of a battery affects the power and speed of the device using it. The overall external voltage of the battery is determined by the number of internal battery units, and the conventional voltage is 2V/unit. Select different battery voltages according to the voltage range of the product used. Such as the common 12V on the market, its interior is constructed by 6 battery grids. A battery with a higher voltage usually provides more power, but the manufacturing cost is higher. In the case of the same capacity, the higher the voltage, the heavier it will be and the higher the unit price.
3.Cycle Life: The cycle life of a battery is the number of times it can be charged and discharged before its capacity begins to decline significantly. Higher quality batteries generally have longer cycle life. The lead-acid batteries used by UnitedStar are all from high-quality manufacturers. Under standard use conditions, when the discharge depth is within 80%, the service life can reach 500 times; if the discharge depth is 25%, the cycle life can reach up to 2000 times.
4.Self-discharge rate: The self-discharge rate of a battery is the rate at which it loses charge when not in use. Batteries with low self-discharge rates generally hold their charge for a longer period of time. For better quality batteries, the self-discharge rate is less than 2% per day under standard storage conditions.
5.Maintenance: Lead-acid batteries require regular maintenance, such as adding distilled water to the battery and making sure the battery is fully charged to prevent sulfation. For some users, a battery that is easy to maintain and has clear maintenance instructions may be a better choice. For high-quality batteries, the amount of liquid added to the battery will be increased during design and production, and the automatic anti-drying function will be used to solve the problems of battery loss of water and battery expansion in the later stage, thereby realizing the maintenance-free function.
6.Sealing: The battery is well sealed, and the safety factor is correspondingly improved, preventing the phenomenon of pollution and corrosion caused by leakage. Therefore, there are more choices in use and storage, and it can be used horizontally or vertically.
7.Safety: High-quality batteries will adopt a safe and reliable explosion-proof exhaust system, which can eliminate the expansion of the battery shell caused by excessive pressure when the battery is in abnormal use.
8.Brand Reputation: The reputation of a battery brand can also be a good indicator of its quality. Well-known brands with a proven track record of producing high-quality batteries are more likely to offer better products than lesser-known or untested brands.
To sum up, judging the quality of a lead-acid battery is mainly based on capacity, voltage, cycle life, self-discharge rate, maintenance requirements, sealing safety, brand awareness and other aspects. By considering these factors and comparing different options, it is possible to choose a quality lead-acid battery that performs well and lasts a long time.
UnitedStar’s Good Quality Rechargeable Fan
With the help of this rechargeable battery operated fan, you can freely cool down any room quickly. Equipped with a rechargeable battery, there are no wires to restrain you, making it an ideal choice from home to workshop, to garage and anywhere else you need.
5 speeds: There are 5 fan speeds to choose from, it is easy to find the setting that suits you.
High quality case material ABS plastic.
Indicator light, fully charged will turn green
USB port: Use this fan to charge mobile phones, tablets and other devices.
It features 1 piece of maintenance free 12V 7.5Ah lead-acid battery. And with 4 pieces of LED night lights, can offer bright environment for your space. Plus, remote control function is optional.
China Electric Fan Manufacturer UnitedStar
China electric fan manufacturer UnitedStar offer a wide range of rechargeable fan styles and sizes for your home and business. You can find rechargeable fans for sale in stores everywhere, but if you’re shopping around for a good deal, check out fan factory UnitedStar first. You’ll save money and get great deals on rechargeable fans for sale.
As an industry leader,China fan manufacturer UnitedStar has a strong production capacity of more than 16000 fans per day. Our factory covers an area of 47200m² with BSCI and ISO9001. The Annual output exceeds 10 million units.
Every year our products enjoy a good reputation all over China and are exported to every corner of the world. We believe that it is because we insist on quality first, making sure that all of our products meet international standards. China electric fan factory UnitedStar also provides customized service for customers who want their own brand or logo on their fans. If you need any help with choosing a suitable product or have any questions about us, please feel free to contact us at any time and we will try our best to assist you. Please be assured that your inquiry will be replied to within 24 hours.
