My 92 400E has 200K km on now, each time I startup the car, it cranks about 3 seconds before it fires up, is this normal?

My other car and all previous cars startup right away, include a 130K km Ford Explorer. After I bought it, as preventive maintenance, I replaced plugs, distributor caps and rotors, fuel pressure regulator, air filters, belt, all these solved some other problems but didn't help out with the long cranking time.

Should I swap the battery with my other car and give it a try, or this is just normal for a 400E?

Thanks.

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99 BMW 540i 6-speed 110K Km
03 SAAB 9-5 wagon 80K Km
92 400E (Sold) 245K km
Still missing the days with the Benz, it kept me busy.