The makita bl1830 lithium ion battery has an unbeatable 22 minute charge time for a 3ah power cell. A lightweight, shock absorbent design allows for controlled operation of cordless power tools, without fear of damage. The bl1830 battery is fitted with the makita star protection system, an inbuilt computer which communicates with compatible makita power tools to monitor operating conditions. The system is engineered to protect against overload, over discharge overheating. The makita bl830 lithium ion battery is only compatible with makita cordless power tools featuring a yellow connector plate, or a connector plate decorated with the star protection system symbol. Over their lifetime, lithium ion batteries have a 430% greater working capacity than ni cad, are 40% lighter than ni mh. They can also be stored for long periods with very little charge depletion. These batteries can be charged using a makita dc18ra or makita dc18rc charger. Important these batteries will not fit the following models bull bss501,bcs550,bpb180,bjv180,bga452,bgd800,bgd801,bjn161,bjs161,bpj180,bjv180,bga452 specifications bull voltage 18v bull battery ah 3.0 bull battery type makita lithium ion lxt features and benefits bull lightweight, shock absorbent design bull minimal power depletion when not in use bull inbuilt makita star protection system bull cutting edge foam cell technology bull slide on power tool attachment to keep battery firmly in place contents bull two bl1830 18v 3.0ah li ion batteries