Re: Good 6v Battery

Posted by Owen_Dyneto On 2017/5/30 11:12:05

For a real heavy duty Group 4 6-volt battery very capable for the Twelves and big prewar Eights and Super Eights with under-floorboard battery boxes the Delco 4HD6V and equivalent NAPA 7210 were supreme, gobs of CCA and life up to 6-7 years or even more. Both are commercial fleet batteries and I believe the NAPA may now be superceded by a Duracell Ultra 6-volt commercial battery. Just Google NAPA 7210 and see what's out there. These batteries may be too large for some under-hood installations, you'll have to check the dimensions or Group# you need.

I've also had just excellent results with the long thin (forget the Group#) 6-volt for the 1950 and earlier Clipper-bodies cars. I had at least one last nearly 6 years.

At the risk of stating the obvious, to get good battery life of course your charging system needs to be up to snuff, you need to check the electrolyte from time to time and add distilled water as needed. And if the car is going to be inactive for a substantial period, best to remove the battery and give it a periodic charge with a trickle charger or battery tender.

What I really like about 6-volt systems is that if you're perceptive you get plentiful clues about your battery reaching the end of it's life even as it still continues to start the car and function. My experience with 12-volt batteries is they seem to go from fully functional to dead as a doornail in as little as 1 or 2 starts - no warning.