CS-FYM966VX : Battery for Flymo Freestyler, 9668616-01 - Replaces Flymo 08829-00.640.00 iPOD Classic 6th Gen then you should choose this

then you should choose this model

it is the same physical size as NR-4QB

0" Contacts:  Wire Leads Connector Warranty:  90 Days

The BP-BP950 is a replacement rechargeable battery for Canon products

Lenovo IdeaPad Gaming 3 15ACH6 82K2017ATA

CS-FYM966VX : Battery for Flymo Freestyler, 9668616-01 - Replaces Flymo 08829-00.640.00 iPOD Classic 6th Gen then you should choose thisThe CS FYM966VX is a replacement rechargeable battery for Flymo products. This battery replaces the following OEM part number(s): Flymo 08829 00. 640. 00 This battery is compatible with the following model(s): Flymo Freestyler Flymo 9668616 01 Specifications: Voltage 3. 6V Chemistry Li ion Capacity 2400mAh Dimensions 67. 00 x 33. 20 x 18. 50mm Color Blue Weight 72. 5 g