Synergy Digital Cordless Phone Battery, Works with Siemens Gigaset SL365 Cordless Phone, (Li-ion, 3.7, 750mAh) Ultra High Capacity Battery - Walmart.com
New Eba-510 For Siemens A51, A52, A55, A56,a57,a60,a62,a65,a75,c55,c56,c60,c61,c70, C71,a70 High Quality External Li-ion Battery - Mobile Phone Batteries - AliExpress
Battery compatible with SIEMENS A52|Mobile Phone Batteries| - AliExpress