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RYOBI 36 V MAX POWER 4.0 Ah Lithium + Battery BPL3640D2 (Compatible with All RYOBI 36 V MAX POWER Garden Tools, Battery Charge Level Indicator, Single Cell Monitoring, Overload Protection): Amazon.co.uk: DIY
RYOBI RY36BC17A-140 36V Battery Starter Set with 4.0Ah Battery Charger for Beginners and Accessories : Amazon.se: Tools & Home Improvement