Ryobi 40V Battery and Charger Kit 4.0 Ah Lithium-Ion Battery Set OEM OP4040 + OP404 (Renewed) - - Amazon.com
RESUNERGY™ 12v 4ah Lithium ion 18650 Rechargeable Battery Pack 11.1v to 12.4v Battery Pack for PC Drone and as a Storage Device : Amazon.in: Electronics
NPP NP12-4Ah (T1) 12V 4Ah SLA Rechargeable Alarm Battery with F1 Terminal for DSC Security Panel, Power Patrol for SLA1056, Vista 20P ADT, Security Systems
EKACO 21V Lithium Battery 4.0Ah Li-ion Battery Long Life Battery Work with Cordless Leaf Blower, for Makita Power Tools BL1860B BL1850 BL1840 BL1850B-2 BL1845 BL1830 BL1820 BL1815 LXT-400 Series