Is the bigger the battery, the better?

Based on the UPS maintenance work statistics, how many faults will occur when the UPS power supply is used for a long time? Backup UPS power supplies fail 50% of the time due to batteries. On-line UPS power supply because the design circuit is reasonable, the driving power component capacity of the large margin, so the power circuit failure rate is very low, battery caused by the failure rate of 60%. Therefore, proper use and maintenance of UPS battery life is one of the key factors to reduce uninterruptible power failure.

The following details are introduced:

In addition to looking at its interior layout, the water and electricity system can be said to be the most important facilities on the RV. Many friends in the purchase of RV will worry about the electricity problem, including self-propelled RV and trailer RV will face, so how to solve our electricity? Today, let's talk about how to solve the RV electricity.

At present, RV electricity can be divided into external power supply, generator, solar panel, battery power supply and other ways, generator and solar panel as a supplementary power can be said to have advantages and disadvantages, solar equipment in the early cost and the generator is similar, but later solar charging system maintenance cost is low, can be used for a long time, Generators are relatively expensive to maintain, require fuel to run (gasoline, diesel, or propane), and are relatively noisy; However, solar energy has its own limitations due to its conversion efficiency and power, as well as the altitude Angle of the sun in the area where it is located. (For example, the total power generation is about 200W. Solar power is stronger in sunny days, but it can only supplement the power at about 10 amps at the end of the day. It is lucky to be able to maintain the power consumption of the refrigerator, but it is almost impossible if the weather is bad.) As for how to choose between generators and solar energy, you still have to depend on your own needs.

Today, in this article, we will focus on the RV battery.

If you want to know how to make a battery last, you need to know where the electricity comes from.

Rv in the process of driving, the engine will generate electricity supply, directly to the RV battery for charging. Rv car, room two parts of the starting battery and life battery are independent of each other, in the use of the process will not occur mutual loss. Simply put, the power reserve and output of the vehicle in the process of running depend on starting the battery; Living area of household appliances, lighting and living equipment rely on life battery, the use and maintenance of the car start battery at present have clear regulations, but the life battery is a lot of vague, then I will give you to introduce the life battery.

Types of batteries: There are only two types of batteries on the market: lead-acid batteries and lithium batteries. Lead-acid batteries are cheap and lithium batteries are expensive.

Advantages and disadvantages of lead-acid batteries: Lead-acid batteries are batteries whose electrodes are mainly made of lead and its oxides, and whose electrolyte is a solution of sulfuric acid. In the discharge state of lead-acid battery, the main component of the positive electrode is lead dioxide, and the main component of the negative electrode is lead. In charging state, the main component of both positive and negative electrodes is lead sulfate.

Now a part of the RV manufacturers are using lead-acid batteries or colloidal batteries as the life battery of the RV, which use the most deep cycle lead-acid battery can put the power is very low and will not affect the battery life, but this battery relative to lithium battery there is a battery storage shortcomings, and lead-acid battery volume and weight are very large, The weight is generally 16-30kg

Due to the 150 years of development history of lead-acid batteries and colloidal batteries, their safety has been widely recognized, while lithium batteries due to the short development time, especially in RV applications, there are still a lot of uncertainties.

Advantages and disadvantages of lithium battery:

Compared with the traditional lead-acid battery, lithium battery has obvious advantages in charge and discharge energy efficiency, storage capacity, volume, weight and other aspects, but also has obvious disadvantages: high price and low stability. The price of lithium battery is generally 3~4 times that of lead-acid battery, but the relative purchase of hundreds of thousands of RV users can still accept.

The real worry is stability. Domestic RV using lithium battery fire events happen from time to time, which makes many people's attitude to lithium battery fuzzy. The best use of lithium battery temperature is 15~30℃, if the working temperature exceeds 35℃, its performance will decline sharply, or even "crash"; When the operating temperature is lower than 5℃, the charging power of the battery will be greatly reduced, and even below 0℃, there will be no charging situation, and too long charging time will lead to lithium evolution of the battery, which may cause short circuit in the battery cell and other safety risks.

Although the previous article has been emphasizing the instability of lithium batteries, but as long as the installation and use of proper, lithium battery accident rate is still in a controllable range. That's why many RV remodelers dare to use it, and for the big RV manufacturers, even a one in 10,000 accident rate is a very scary thing. Most users don't care about that low accident rate.

The real worry is that the recent domestic RV market appears to rely on the car generator (12V), solar energy and other charging "no external electricity" RV, battery capacity is getting bigger and bigger, even up to 1000Ah, because of strong dependence on lithium battery and inverter, to a certain extent increased the lithium battery accident rate.

Improper circuit design leads to safety accidents

Of course, the problem of RV battery is not only a technical problem, here also hope to introduce regulations and industry standards as soon as possible, so that consumers can be more assured, as for how to choose RV battery, choose how much battery, you still need to choose according to their own needs and the opinions of professionals on the basis of safety. We are one of the leading portable generator supplies manufacturers in China, welcome to contact us for battery support.