SuPower 3.6V 3.7V 4.2V 18650 4400mAh Lithium ion Li ion Rechargeable Battery Pack Max. 2A with built in protection circuit board|battery pack|lithium ion battery packbattery pack 3.7v - AliExpress
10.8V 4400mAh Li-ion Battery for PowerBook G4 15inch A1106 A1045 A1078 A1148 E68043 M9325 Laptop, View battery for laptop, Neutral Brand Product Details from Dongguan Youli Electronic Technology Limited on Alibaba.com
China Rechargeable Laptop Battery for Lenovo Thinkpad T410 SL410 Series 42t4235 10.8V 4400mAh 6cell Li-ion Cell with 1 Year Warranty - China Laptop Battery Replacement for Lenovo and Battery for Lenovo Thinkpad