RYOBI - 18 V ONE+ 5.0 Ah Lithium-Ion Battery - Compatible with all 18 V ONE+ tools and 100% backwards compatible - Long battery life and performance - RB18L50 : Amazon.com.be: Electronics
Amazon.com: LabTEC RB18L50 18V 6000mAh Lithium Battery Compatible with Ryobi 18V BPL-1815 BPL-1820G BPL1820 BPL18151 P102 P103 P104 P105 P107 P109 P122 Cordless Power Tools with LED Indicator : Tools & Home