A Few Things Our Customers Are Saying

• Funsong is the best Chinese manufacturer of custom Li ion battery pack. They have impressed us with rich experience, professionalism and well as quick response during our cooperation in rechargeable custom lithium ion battery packs, they are the best among our other suppliers in China. Thanks to our pleasant cooperation, we will con.
• Our cooperation with Funsong started from 2008. At that time,we were designing a monitoring battery pack for high-speed train which requires extremely high reliability, we had worked with several other rechargeable li ion battery pack suppliers before we did with Funsong, but all their designed solutions turned out to be in failure with quality problem. Then we found Funsong, they chose 18650 lithium ion batteries from Sanyo and chip from TI to design our products which was confirmed very reliable and safe, we have been purchasing this for 8 years since 2008 although the cost is a little bit higher. They are our best supplier of rechargeable custom lithium ion battery packs.
• We planed to start our business in rechargeable portable power banks in 2002. A friend of mine recommended Funsong for cooperation. At that time, we were designing a portable waterproof power bank rated IP67 and with high discharging current of 3.4A which is able to pass 3m drop test. It is considered the most challenging in the whole industry. Funsong finished R&D design in short time and supplied stably in the coming 3 years. This rechargeable power bank was awarded as the Most Creative Product in our Group and Funsong the Best li ion Battery supplier. In the later years, we worked together in several other portable power banks with advanced technology. Funsong is an excellent partner full of creativity and foresight, we do hope to work in more and more products.