Amazon.com: Enegitech 40V 6.0Ah OP4060A Replacement Battery for Ryobi 40Volt Lithium-ion Battery OP4040 OP4050A OP40201 OP40602 OP40404 Compatible with Rypbi 40 Volt Cordless Power Tool (1 Pack) : Tools & Home Improvement
Amazon.com: energup 40V Replacement Battery for Greenworks 40V Battery G-MAX 29462 29252 20202 22262 25312 25322 20642 22272 27062 21242 GreenWorks 40V Lithium Battery (Not for Gen 1) : Tools & Home Improvement
Amazon.com: Greenworks Pro 80V (300 Watt) Power Inverter, 120V AC, for Charging Small Electronics, Smart Phones, Tablets, Small Televisions, Tool-Only, IV80A00 : Tools & Home Improvement