Yes, of course, a DVM is sufficient or a Sear's load test.

The reason I bought a hydrometer years ago was when I was wrestling with a battery for a diesel. Start, no start, start, no start problems. Battery intially tested well but turned out had a "surface charge". Having no idea what that really meant someone suggested I invest in the hydrometer. It instantly revealed that the battery was toast.

Not too expensive and definitely tells the chemical side of what's up with your battery.

Haasman

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'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)