• Battery size
• Voltage
• Quality
• Battery technology
• Grid or off grid
• Brand
• Backup enabled
• Variation in installation

How long will a batteries last for ?
Solar battery manufacturers test their products under standard conditions in what is called a cycle – or in simple terms one full charge and discharge. Different batteries have different specifications, so it’s always a good idea to check the technical sheets for the brands and models you’re interested in.
It is important to note that we offer extended warranties for purchase if you want an extra level of coverage for your investment.
Max Power batteries(www.szmaxpower.com) has a solution to suit your individual household needs. Please feel free to contact us.

Knowing what's the right solar battery solution for you?
Solar battery storage isn’t a one-size-fits-all solution. Your PV solar system and how you use power will help determine the right capacity for you.
The capacity of a solar battery is how much power it can store. But getting the biggest battery isn’t always the best option for every household. There is no point in having a 5 litre bucket if you only have 1 litre to carry.  We want to match a battery solution to you. Making sure your battery stores the right amount of power you generate without too much over flow or without wasted space.
Choosing the right battery capacity will see you getting a better return on your investment sooner.
With a number of modular systems also available you can expand your system if your household needs change. When the kids move out and your home is using less power during the day, you could add another battery to store more excess power from your solar system. Reducing waste and increasing solar usage when the sun goes down.
Max Power batteries(www.szmaxpower.com) has a solution to suit your individual household needs. Please feel free to contact us.

How Does a Solar Battery Work?
Most Australian households are not home, or use very little power during the day. Energy usage is much higher during the morning and evening. This is why solar battery storage is getting everyone’s attention!
Solar batteries simply store unused electricity generated by your solar system during the day, for your own use later. Extending the capabilities of your system to have it working harder for you. When the solar system is no longer producing power your house starts to run from the stored battery power, instead of relying on the grid. Doing more with your own solar before paying your electricity provider. What doesn’t sound great about that?
Shenzhen Max Power Company(www.szmaxpower.com) has a solution to suit your individual household needs, offering a large range of solar battery sizes and leading brands. With the analysis of a few key figures on your energy bill and our specialist knowledge, we can help you take charge of your energy bills today!

• Energy independence:  Don’t get caught in the dark! With a solar battery, you can enjoy a reliable power source even during grid outages. This means you’ll have greater control over your energy supply and won’t have to rely solely on the grid.
• Reduced energy costs: With a solar battery, you can stick it to high grid energy prices! Utilising the stored solar energy during peak usage times will save money on your energy bills in the long run. So say goodbye to outrageous energy bills and hello to a more cost-effective solution.
• Environmental benefits: By storing excess solar energy, you’ll reduce your carbon footprint and contribute to a cleaner environment.
• Increased property value: Adding a solar battery system to your property is a wise investment that can pay off in more ways than one. Not only will you enjoy the benefits of reliable and cost-effective energy, but it can also increase the resale value of your property. A solar battery system is a valuable addition to your property and can increase its resale value.
• Power during blackouts: Don’t let a power outage disrupt your life! With a solar battery system, you can have peace of mind knowing that you have backup power for your essential appliances and devices. Your battery will kick in when the lights go out, ensuring you’re never without power.

Answer：No, because any charger corresponds only to a specific charging process and only to a specific electrochemical process, such as lithium-ion, lead-acid or nickel-metal hydride batteries, which not only have different voltage characteristics, but also different charging modes. They must not be mixed.

Answer：External short circuits can be caused by connecting the outer ends of the battery to any conductor. Depending on the type of battery, short circuits can have consequences ofvarying severity. For example, the temperature of the electrolyte will rise and the internal air 
pressure will increase. If the air pressure value exceeds the pressure resistance value of the battery cap, the battery will leak. This situation can seriously damage the battery. If the safety valve fails, it may even cause an explosion. Therefore do not short-circuit the outside of the 
battery.

Answer：After the battery has discharged the internal stored power and the voltage has reached a certain value, continued discharge will result in over-discharge; battery over-discharge may bring disastrous consequences to the battery, especially high current over-discharge or repeated over-discharge, which will have a greater impact on the battery. Generally speaking, over-discharge will cause the internal pressure of the battery to rise, the reversibility of the positive and negative active substances will be damaged, and even if recharged, it will only partially recover, and the capacity will be significantly decayed.

Answer：Overcharging is the act of continuing to charge a battery after it has been fully charged by a certain charging process; overcharging may cause an increase in internal pressure, undesirable phenomena such as battery bulging and leakage. At the same time, its electrical performance will be significantly reduced.。

Answer：
1.The battery is not fully charged, e.g. insufficient charging time, low charging efficiency, etc.；
2.Excessive discharge current, resulting in lower discharge efficiency and thus shorter discharge times；
3.Low ambient temperature when discharging batteries, reduced discharge efficiency。

Answer：
1.Battery pack not charged；
2.Battery packs cannot be discharged due to the temperature of the environment in which they are used；

Answer：
1.Zero voltage cells in the battery pack；
2.Battery pack internal electronic components, abnormalities in protection circuits；
3.Poor voltage collection, not all single section voltages are detected；
4.Charging device failure, no output current。

Answer：
1. Zero voltage on a single battery；
2. Faulty internal connection of the battery, poor contact between the connection piece and the battery, etc.；
3. Damage to the internal electronic components of the battery。

Answer：The heat generated by the reaction is so great that the temperature of the entire battery system rises. Therefore, there is a sharp rise in temperature at this time. The higher the temperature, the lower the equilibrium potential of the battery, so the temperature rise must lead to a drop in the equilibrium potential of the battery, so there is a sudden drop in the battery voltage at this time.

Answer：According to IEC standards, batteries should be stored at a temperature of 20°C ± 5°C and a humidity of (65±20)%. For long-term storage, it is ideal to keep the battery in a dry and cool environment and to keep the remaining charge at around 50%. Of course, it is best to take the battery out once a month to ensure that it is in good condition and not to lose all the power and damage it.

Answer：The inherent electrochemical structure of the battery itself dictates that there is an inevitable loss of capacity, mainly due to self-discharge. The size of the self-discharge is usually related to the solubility of the cathode material in the electrolyte and its instability (susceptibility to self-decomposition) when subjected to heat. The self-discharge of LiFePO4 battery packs is 3%/month.

Answer：If different capacities or old and new batteries are mixed together, the difference in capacity during charging leads to some batteries being overcharged and some not fully charged when charging, and high capacity batteries not being discharged when discharging, while low capacity ones are overcharged. In this vicious cycle, the batteries are damaged and leak or have low (zero) voltage.

Answer：The BMS has a fault warning function, which can be viewed via the host software. Faults include the following：
1)Sampling fault: a fault in the communication between the analogue front end and the master chip. When this fault occurs, the charging and discharging MOS is switched off and the fault alarm can be cleared automatically when the fault is cleared;
2)Temperature NTC failure: mainly detects if the temperature NTC is short-circuited or disconnected. When this fault occurs, the charging and discharging MOS is switched off and the fault alarm is automatically cleared when the fault is cleared;
3)The fault is also reported when the voltage sampling line is disconnected. The fault alarm is cleared automatically when the fault is cleared.

Answer：
1)Charging high temperature protection and recovery When the battery temperature is higher than the charging high temperature protection value and the duration reaches the charging high temperature protection delay, the system enters the charging high temperature protection state and turns off the charging MOS When the battery temperature drops below the charging high temperature recovery value, the charging high temperature protection state is lifted.
2)Discharge high temperature protection and recovery When the battery temperature is higher than the discharge high temperature protection value and the duration reaches the discharge high temperature protection delay, the system enters the discharge high temperature protection state and shuts down the discharge MOS When the battery temperature drops below the discharge high temperature recovery value, the discharge high temperature protection state is lifted.
3)Charging low temperature protection and recovery During charging, when the battery temperature is below the charging low temperature protection value and the duration reaches the charging low temperature protection delay, the system enters the charging low temperature protection state and turns off the charging MOS. when the battery temperature rises above the charging low temperature recovery value, the charging low temperature protection state is lifted.
4)Discharge low temperature protection and recovery During discharge, when the battery temperature is below the discharge low temperature protection value and the duration reaches the discharge low temperature protection delay, the system enters the discharge low temperature protection state and shuts down the discharge MOS. when the battery temperature rises above the charge low temperature recovery value, the discharge low temperature protection state is lifted.
5)MOS high temperature protection and recovery The system has a MOS temperature detection port, when the MOS temperature is higher than the MOS temperature protection value, and the duration reaches the MOS temperature protection delay, the system enters the MOS high temperature protection state and shuts down the charging and discharging MOS When the MOS temperature drops below the MOS temperature recovery value, the system releases the MOS high temperature protection state.

Answer： When the discharge current is higher than the short-circuit protection current value and the duration reaches the short-circuit protection delay, the system enters the short-circuit protection state and turns off the discharge MOS. short-circuit protection occurs, the system automatically locks the state, and the short-circuit protection state can be automatically released after removing the load. Charging can also be released.

Answer：When the discharge current is higher than the discharge overcurrent protection current and the duration reaches the discharge overcurrent protection delay, the system enters the discharge overcurrent protection state and turns off the discharge MOS. When the discharge 
overcurrent protection occurs, the system will automatically release the discharge overcurrent protection state after 1min. If the overcurrent protection occurs 10 times in a row, the system will automatically lock the state and will not be released automatically. It can also be deactivated by charging. The discharge overcurrent protection is divided into 2 levels, with different response speeds for different discharge currents to better protect the battery.

Answer: When the charging current is higher than the charging overcurrent protection current and the duration reaches the charging overcurrent protection delay, the system enters the charging overcurrent protection state and turns off the charging MOS. When the charging  overcurrent protection occurs, the system will automatically release the charging overcurrent protection state after 1min. If the overcurrent protection occurs 10 times in a row, the system will automatically lock the state and will not automatically release it. Discharge is also possible.

Answer: When the overall voltage of the battery pack is lower than the overall over-discharge protection voltage and the duration reaches the overall over-discharge protection delay, the system enters the over-discharge protection state and switches off the discharge MOS. after the over-discharge protection occurs, charging the battery pack can release the over-discharge protection state.

Answer： When the minimum cell voltage of the battery pack is lower than the single cell over-discharge protection voltage and the duration reaches the single cell over-discharge protection delay, the system enters the over-discharge protection state and turns off the discharge MOS. after the over-discharge protection occurs, charging the battery pack can release the over-discharge protection state.

Answer：When the overall voltage of the battery pack is above the overall overcharge protection voltage and the duration reaches the overall overcharge protection delay, the system enters the overcharge protection state and switches off the charging MOS. when the overall voltage of the battery pack drops below the overall overcharge recovery voltage, the overcharge protection state is released. Discharge can also be released.

Answer：When the maximum cell voltage of the battery pack is higher than the cell overcharge protection voltage and the duration reaches the cell overcharge protection delay, the system enters the overcharge protection state and switches off the charging MOS. when the voltage of all cells in the battery pack drops below the cell overcharge recovery voltage, the overcharge protection state is lifted. Discharge can also be lifted.

Answer: The design capacity is the rated residual capacity of the battery pack when it leaves the factory and is the remaining capacity of the battery pack during the charging and discharging process. The design capacity, the remaining capacity and the total capacity can all be initially set via the host computer.

Answer: It is recommended that the driver software for the USB to serial debugging tool is correctly installed under the operating systems XP and WIN7. If the host computer prompts that there is no available serial port, you need to check whether the USB debugging tool has installed the matching driver software and whether the communication cable is well connected. You can also plug and unplug the USB port again and open the serial port manually to test, if the scroll bar below the upper computer scrolls normally, it means the communication is good.

Answer：The most straightforward way is to connect to the PC or Bluetooth and check the fault phenomena via the PC or Bluetooth. The alarm, protection, fault and other information indicated on the PC or Bluetooth interface can be used to roughly analyse the cause and provide the necessary reference for further testing.

Anwser:If it is very difficult or even impossible to insert, you need to observe whether the metal terminals of the cable interface are abnormal, such as the pin is out of position or the spring is open and other abnormalities, please use tweezers and other tools to repair

Anwser:Always follow a strict sequence when wiring up the BMS. Install or solder B- and P- first, then B+ and P+, when the BMS system is powered up. Then simply plug in the battery sampling wires from B0 to B16 in descending order. Note that no load or charger can be added until all 
connections have been installed. The order of removal is reversed: unplug the charger or load first, then remove the battery sampling cable connectors from B16 to B0 in ascending order, then B+, P+ and finally B-, P-.

Anwser:Single cell overcharge protection, overall overcharge protection, Single cell overdischarge protection, overall overdischarge protection, charging overcurrent protection, discharging primary overcurrent protection, discharging secondary overcurrent protection, short circuit protection, charging high temperature protection, charging low temperature protection, discharging high temperature protection, discharging low temperature protection, MOS high temperature protection, reverse connection protection (to be customised)

Anwser:ordinary protection boards, it has complete protection functions (overcharge, overdischarge, overcurrent, overtemperature, low temperature, short circuit, etc.), as well as communication with the system host and the host computer to monitor and measure battery status and battery 
information and history data, as well as intelligent battery balancing functions, remaining capacity SOC estimation and SOH estimation, as well as LED status indication and LCD screen display, etc.

Answer: Although the lead-acid battery has been strictly selected when it leaves the factory, after a certain period of use, the non-uniformity will appear and gradually increase. The charger does not have option and recognition, and can not supplement the undercharge Restricting the amount of overcharge and how to balance the battery capacity must be performed by humans. The user measures the open circuit voltage of each battery periodically and irregularly during the middle and late periods of battery pack use. For lower voltages, recharge separately to make the voltage and capacity consistent with other batteries, and try to reduce their gap.

Answer: After the battery is charged, the phenomenon that the capacity decreases by itself during storage is called self-discharge, also known as the charge retention ability, which refers to the ability of the battery to maintain the amount of electricity stored under certain conditions when the battery is open. Measuring the percentage of battery self-discharge to the total capacity over a certain period of time is called "self-discharge rate".

Answer: The reasons for the battery charging heat are:During the charging process of the battery, part of the electrical energy is converted into chemical energy, and part of the electrical energy is also converted into thermal energy and other energy. It is normal for the rechargeable battery to heat up, but when the temperature is high, you should check whether the charging current is too large or a short circuit occurs inside the battery.The relationship between the amount of heat generated and the amount of electrolyte is small. If the sealed battery has a small amount of electrolyte, the internal resistance increases, which will also cause the battery to heat up and the terminal voltage to be high during charging. Battery aging, dry electrolyte, and internal short circuits can also cause heat. The charger can not be constant voltage in the late stage of charging, so that the battery voltage exceeds the allowable value, the temperature will rise, it will swell seriously, and the end of life.During use, try not to place it horizontally or upside down, to prevent a large amount of gas produced inside the battery from being discharged from the air release valve, especially when charging, otherwise it may cause the casing to burst.

Answer:The battery is allowed to have a small amount of heat, whether in use or during charging, but abnormal heat is not allowed. The abnormal fever is obvious, and you can feel it by touching the battery case with your hand. Heat is very harmful to the battery. The heat first causes the electrolyte water to evaporate and gradually dry up, and then decreases the charging efficiency, deformation of the plates, increased internal resistance, accelerated oxidation of mechanical parts, burned out plates or separators, and finally manifests in reduced battery capacity and shortened life.

Answer: It refers to the resistance to the current flowing through the battery when the battery is working. There are two parts: ohmic internal resistance and polarization internal resistance. Large internal resistance of the battery will cause the battery's discharge working voltage to decrease and shorten the discharge time. The internal resistance is mainly affected by the battery material, manufacturing process, battery structure and other factors. Is an important parameter to measure battery performance.

Answer:According to the amount of active material contained in the battery, the capacity of the battery calculated from electrochemical theory is called the design capacity.

Answer:The capacity of the battery refers to the amount of electricity that the active material in the battery can participate in the electrochemical reaction is called the capacity of the battery, that is, the amount of charge that the battery can hold after charging. The unit is "Ah" (Ah) and 1 A (A). The current is discharged for 1 hour, and the capacity is 1 ampere hour (Ah). Assuming that the average current is 4A, the discharge time is 3 hours when the battery is discharged at the termination voltage of the battery, and the battery capacity is 12Ah (the discharge is not calculated here) effectiveness).

Answer: Each battery has the capability of electrochemical conversion, that is, the stored chemical energy is directly converted into electrical energy. As far as a secondary battery (also called a battery) (another term is also called a rechargeable portable battery), In the process, chemical energy is converted into electrical energy; in the charging process, electrical energy is converted into chemical energy again. This process can be charged and discharged more than 500 times, depending on the electrochemical system.