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Discussion Starter · #1 ·
Hi, i'm new to the forums :)
I've got Benz A150 from my Dad and he rarely used it for the last couple of years.
Battery seems dead as he mentioned that he can't start engine after 3-4 days of inactivity.
And there is no "battery not charging" icon on a dashboard so i assume it is propably battery failure

My question is:
The currently installed battery is 62Ah, 540A
I've got spare one (almost new) but it's smaller capacity: 45Ah, 400A
Is it going to work in this car? I'm short on cash atm and i thought i could use small battery.

If its not going to work, which capacity i should use? I noticed that all car battery search platforms suggest 60-63Ah and above 600A startup current.
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