Saft‑Nife SMR 48/25M 4724‑68‑40346‑01 is a 48 VDC battery charger module designed to supply up to 25 A to industrial Li‑ion or NiMH packs, featuring a switch‑mode rectifier and built‑in over‑current protection. Common failure points on this class of modules include degraded MOSFETs or IGBTs in the power stage, faulty gate driver ICs, and damaged input/output capacitors that can cause overheating or loss of regulation. Initial checks should verify the 48 V input supply voltage and polarity, inspect for burn marks or swollen electrolytics on the board, and confirm that the output current limit is engaging by measuring the output under load; if these pass, proceed to test the gate driver outputs with an oscilloscope and replace any failed power transistors.[oss-gpt-20b]