Battery without BMS Blue Star HQ module for iPhone models. The BMS (Battery Management System) module is a system that manages the operation of the lithium-ion battery. The most important function of the BMS is to protect the battery against overcharging, which can lead to permanent damage to the battery. The BMS system also ensures an even charge level of individual cells, which leads to the balancing of the entire battery. Made with maximum precision, perfectly matched to the dedicated model. Safe to use, it has undergone a number of tests confirming its safe operation. Made of lithium-ion cells using the latest technologies including laser welding and precise automation. The kit includes mounting tape for easy installation of batteries. The tape is very durable and has been tested with a tension force of up to 5 kg. Specification: Cells: li-lon Without memory effect Number of cycles: 800 Mounting tape included