LiTech Power designs and produces LiFePo4 12V series Drop-in play battery pack with many different configurations and all are integrated with smart battery management system. All versions of these 12V battery pack support daisy chain connection, are able to realize up to 4 series and 4 parallels, busbar Voltage and discharge current will superimposed. If you can not find a suitable Li-ion / Li-Polymer /LiFePO4 battery pack on our site, please check our OEM/ODM page to submit your details or call us to custom your own battery pack.