The 16-TSSOP (0.173, 4.40mm Width) package is appropriate for it. The smart tools battery is packaged in a Tape & Reel (TR) case. Surface Mount is mounted in the way of this electronic component.
S-8254BCGFT-TB-U Features
Available in 16-TSSOP (0.173, 4.40mm Width) Package Mounting Type: Surface Mount
S-8254BCGFT-TB-U Applications
There are a lot of ABLIC U.S.A. Inc. S-8254BCGFT-TB-U Battery Management ICs applications.