Compatible with Laptop Models: Replacement for Siemens Simatic Field PG M6 Series. Note: SP306 and SP306-2 are two distinct battery models and they are not compatible with each other
Security: All ZTHY products are Certified by CE, FCC for safety. Strict guidelines for compatibility, and standards compliance for environment safety
Note: If the new battery is not recognized during the initial installation, please reinstall and check if the interface is fully connected. Discharge the new battery to 10-20% (not 0%), then charge and cycle 3-4 times to wake up the new battery