How to distinguish the quality of battery charging pools?

The most useful tool is to directly test and compare these important performance indicators. Due to the fact that most of the above indicators are measured using specialized equipment, they are not feasible for ordinary consumers. Of course, there are some indirect methods. For example, if you use the same device (such as a walkman) and use two different batteries under the same conditions, a more durable battery is naturally a higher capacity product. Measuring weight and looking at capacity, generally speaking, with the same battery technology, high-capacity products must be heavier. For example, with the current level of industrial technology, the performance in all aspects can reach the standard AA type 2100mah capacity nickel hydrogen battery, and the weight is generally greater than 29 grams. Looking at the appearance of packaging, visual appearance is an important reference for measuring the quality of many products. For batteries, a solid and smooth battery casing, clear printing, and good packaging material texture are the foundation for ensuring quality. Qualified battery products should be printed on the battery packaging label, factory name, address, product type, model, voltage label, implementation standards, warning content, production date, etc. Dry batteries also have a shelf life. Most low-quality products will have non-conforming items in the above appearance and packaging indicators.

Why can't the battery be charged? Recently, the boss reported that the battery of their electric vehicle is running out, but the electric vehicle has just been purchased and has not been used for a month. The discarded battery can no longer be charged. I believe many friends have encountered similar problems on this day. The following series will answer our questions. What's wrong with not charging the battery? In fact, the above situation is due to the battery not charging for a long time, and the panel is subjected to irreversible sulfate alkali attack, resulting in battery problems. The important characteristics of sulfuric acid plates are: fast voltage rise, premature gas precipitation, fast temperature rise, fast discharge voltage drop, and small capacity during the charging process. The reason for the irreversible sulfation of the No.1 battery board. The storage time is too long, the battery has a high self discharge rate, and the battery does not maintain charging. Continuous or frequent over discharge or low current deep discharge. The power supply can only be restored after 24 hours of discharge. Overcharge or frequently overcharge. The battery cannot be charged under high current. Both high and low ambient temperatures can affect the performance of the battery. For example, for every 10 degrees increase in temperature, the rate of salinization will double. Kill. Short electrolyte. Due to excessive evaporation and leakage of water or electrolyte without timely replenishment, the liquid level is too low and exposed to the liquid level on the board for a long time, forming sulfates on the board. Batteries should be placed carefully, as they will not have insufficient food for a long period of time. We should pay attention to the maintenance of batteries in daily life. When the electric vehicle is left for more than a week, attention should be paid to charging and discharging the battery. At the same time, it is also necessary to prevent the occurrence of the above-mentioned situations.