What should I pay attention to when the lead-acid battery of a motor vehicle can be changed to a lithium battery?

1. When refitting, consider the volume and space. Under the same capacity, the volume of the lithium battery is only half of that of the lead-acid battery, so it can definitely be installed, but pay attention to some shape and packaging issues. After all, the space on the car may not be the same. If the battery is in one direction, you should consider fixing it reliably and beware of vibration and falling. Moreover, when economic conditions permit, it is of course hoped that the larger the capacity of the modified lithium battery, the better. Therefore, it is necessary to make full use of the upper space and choose a battery with a reasonable shape for layout. If it is replaced with the same capacity, because the remaining space is large, when replacing it, find something to fill up the excess space, and the lithium battery will shake off when driving. 2. When disassembling the battery, although the battery output is positive and negative, it is very simple, but it should also be removed one by one, wrap the bare wire ears with tape, and then note the ± mark, so that when you install it back, re-align it. Connect the positive and negative pairs one by one. When you are confused, you can connect the positive and negative negatively, or accidentally short-circuit the positive and negative batteries of the positive and negative batteries, causing safety problems. 3. When buying lithium batteries, it is best to let the merchants match the same or similar plug terminals. If the plug shapes are different, some may need to be crimped or welded, or even switch wires, etc., be sure to pay attention to the current size to choose It is best to put a DC multimeter to match the specifications, and re-measure the voltage when wiring, and beware that the positive and negative are reversed. Remember, the positive and negative poles must be placed separately, and do not perform operations such as grounding the negative pole. 4. If the motor and controller are enlarged while changing the battery, it is necessary to consider whether the main circuit line should be thickened. You can check the electrician's manual to see how many squares of wire can pass and how many amperes of current. The line of the car is thinner, which will also leave a safety hazard, and the efficiency and power effect will be compromised. 5. If the lead-acid battery is changed to lithium battery, the charger must be changed to a special lithium battery. The internal resistance of lead-acid battery is large. Generally, the output voltage of the charger should be higher, and many have pulse charging function, so that the lithium battery can be charged. It will be overcharged. Because of the protection of the protection board, the charger output voltage setting will be abnormal when charging, and the backward cells may be unsatisfactory and cause damage. If the protection board happens to be broken, such high-voltage charging can easily cause an explosion. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous article: Specific analysis on lithium battery PACK