Yes, our factory is a leading enterprise in the field of energy storage battery manufacturing in Dongguan City, China. We have approximately fifteen years of production experience. We welcome you to make an advance appointment to visit our factory.

It depends on the actual situation. 3-7 days with stock, if without stock, that will depend on your order quantity, normally needs 20-25 days.

Yes. Sample order are welcome. Please contact our sales manager(rocan@yifeinewpower.com) to place the order.

Yes,It is ok,Welcome OEM/ODM.We support custom logo/size/color/function etc.

We have a mature RQS system to monitor every step of the production process. These include IQC (incoming inspection), IPQC (process inspection), FQC (final inspection), and OQC (shipment inspection). Before the products are shipped out, we will conduct strict accuracy tests, temperature and humidity tests, aging tests and other procedures.

Yes. Customers can connect the battery in parallel or series. But there are a few things to keep in mind:
1.Before connecting batteries in parallel, make sure their voltage/capacity is the same. If they are not the same, charge them at the same rate.
2.Never connect a used and a new battery in parallel. This may reduce the capacity of the entire battery pack.
3.If you want to connect them in series, please tell us the total capacity of the pack. We will select the appropriate BMS for each battery.
4.If you are not experienced with parallel and series batteries, please do not handle the battery on your own. It may be dangerous and shorten the battery's cycle life.

Initially, installing an energy storage system might cause you to pay a little more. However, in the long run, there is no doubt that you will eventually recover the cost. For households, a home energy storage system can reduce electricity bills by increasing the proportion of self-generated and self-used power, and by participating in ancillary services. Moreover, in the event of major emergencies, it can also be used as an emergency backup power source.