Description:The TL-5903 iXtra Series is an improvement of the Xtra series for long term high performance. Parameter:TL-5903 is a direct replacement to TL-2100 and TL-5104Size: AAInternational size reference: AA, ER14505Series: iXtra SeriesNominal Voltage: 3.6VNominal Capacity: 2.4AhMaximum recommended continuous current 100 mAMaximum pulse current capability 200 mAWeight 18 g (0.635 oz)Operating temperature range -55 ºC to +85 ºCLi metal content approx. 0.65 g6ES7971-0BA00 SL-360 TL-5903/3.6V6ES7971-0BA00 Back-up Battery For Siemens s7-400SIMATIC S7-400, BACK-UP BATTERY 3.6 V/2.3 AH for PS 405 4A/10A/20A and PS 407 4A/10A/20A