The Makita DC40RA compact fast charger is specially developed for XGT 40v Max lithium-ion batteries, however with this ADP10 charging adapter, the charger is also suitable for fast charging LXT 14.4v and 18v LXT batteries. Up to 25% faster than the current LXT chargers DC18RC and DC18RD plus you have the flexability of being able to charge the new 40V max batteries! The charger is also equipped with two fans: one for forced cooling of the battery and one for cooling the charging circuit. Combining these techniques prevents high temperatures in the battery and charger, extending the life of the battery and significantly accelerating the charging process. Result: an optimal loading system. In combination with this ADP10 adaptor, 18v LXT batteries can be charged faster than with any current LXT fast chargers including DC18RC and DC18RD, when using the DC40RA. For example, a 5.0Ah or 6.0Ah 18v LXT battery is fully charged within 40 minutes, compared to 55 minutes with an LXT fast charger. Makita ADP10 Charge times when used on LXT 18v batteries Allows a DC40RA to charge 14.4v or 18v LXT batteries quicker than any existing LXT battery charger Allows a DC40RA to fully charge a BL1840B 4.0Ah 18v LXT lithium-ion battery in only 29 minutes (approx.) Allows a DC40RA to fully charge a BL1850B 5.0Ah 18v LXT lithium-ion battery in only 40 minutes (approx.) Allows a DC40RA to fully charge a BL1860B 6.0Ah 18v LXT lithium-ion battery in only 40 minutes (approx.) Features and Benefits: Developed for charging XGT Li-ion batteries Approx. 28 minutes to fully charge 2.5 Ah battery (BL4025) and 45 minutes to fully charge for 4.0 Ah battery (BL4040) Compatible with interchangeable adaptor ADP10 for charging LXT Li-ion batteries New raised and enlarged charging indicator status light for clearer indication Selectable melody sound for full charge notification Two cooling fans, one for the battery and one for the charging circuit Able to perform consecutive fa