About this replacement
Designed for Burdick, Spacelabs, Edan devices. Compatible models include SE-1200 Express EKG, Cardio Express SL12, Cardio Express SL12A, SE-12, SE-601, SE-1202 ECG. Replacement part numbers include TWSLB-004, 019-0779-00, HYLB-727, M21R-064114, 21.21.064146. Key specifications: 14.4V, 5200mAh, Li-ion.