The BSL1850C battery is 19 mm shorter and 100 g lighter
than the BSL1850 battery. It sounds not much, but the
battery has a significantly reduction in both size and
weight: 15% smaller and lighter. It still provides you
with the same high power output. This compact battery
powers all existing HiKOKI 18V slide tools and is
compatible with the existing 18V rapid chargers.