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If you're comfortable proceeding, then plug in to AC power. With the multimeter, look for the DC voltages indicated in the pictures.
==Autopsy==
My house did not take a direct hit from the lightning bolt. If so, I’d have visible damage and many more items would have been destroyed. The charger was in the garage. My guess is the plasma field of the lightning caused the MBR2560CT to internally short. This caused maximum drive current to be sourced by the TOP368EG on the input side. Diode US1M on the right side of the picture was replaced as a part of the troubleshooting effort, but was probably good. The 3.15 amp input fuse did not blow and is still functioning.
Perhaps yours failed in a similar manner.
All of the parts are available from Mouser https://www.mouser.com/
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Kobalt LI Ion Charger 1.jpg|thumb|Kobalt Charger KRC 40-06 Underside
Kobalt LI Ion Charger 2.jpg|thumb|Kobalt Charger KRC 40-06 Topside
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