ExpertPower 18v 3000mAh NiMh Extended Battery for Makita 1823 1833 1834 1835 1835F 192828-1 192829-9 193061-8 193102-0 193140-2 193159-1 193783-0 Brand New | Ni-Mh | 18 Volts | 3000 mAh | Black/Grey ExpertPower products are tested to match and/or exceed OEM specs. Before purchasing, please make sure your charger is compatible with Ni-Mh technology. Products trademarked ExpertPower are marketed and sold exclusively by ExpertPower. 1 Year Warranty Every battery cell has a print of the specifications that define its cell type, chemistry type, power level and voltage ExpertPower batteries have a 99% accuracy rating, while the competing battery averaged 56.4% A fully charged battery is like a bucket filled with water, the more water (power) inside the heavier the bucket (battery) will be ExpertPower battery cells are denser and heavier