ROBOROCK BCR-61P-4000TS 21.6V / 4000mAh
ROBOROCK BPR-1P6S-3600A1 22.2V / 3468mAh/76.99Wh
ROBOROCK BCR-1P6S-4000HX 21.6V / 3600mAh /77.76Wh