Model : TL-5903 Voltage: 3.6V Capacity: 2400mah Weight: 18g Size: 14.5mm*50.5mm6ES7971-0BA00 SL-360 TL-5903/3.6V 6ES7971-0BA00 Back-up Battery For Siemens s7-400 SIMATIC S7-400, BACK-UP BATTERY 3.6 V/2.3 AH for PS 405 4A/10A/20A and PS 407 4A/10A/20A Category PLC Accessory Product advantages: high voltage, high energy density, long life, stable discharge, good high-current discharge performance, no leakage, and good durability. Suitable for Omron instrument, water meter, gas meter, CNC machine, PLC machine, etc. Precautions: 1. Do not short-circuit the positive and negative terminals of the battery. Short-circuiting the battery may cause the battery to heat up or cause an explosion. 2. It is forbidden to throw the battery into the fire. When the battery is heated above 85°C, it will cause the battery to leak liquid to ignite or explode. 3. It is forbidden to directly weld the battery for a long time. Welding the battery case for a long time can cause the battery to explode or leak. Package included:3PCS PLC Battery