6v batteries in series mystery

**brettw** · 09-02-2019, 06:48 AM

Originally Posted by Atimm693

If you plan to keep this setup I would use something like this for simplicity.

Yuasa 6/12 Volt, 2 Amp Automatic Battery Charger & Maintainer [2 Bank]: BatteryMart.com

I would not charge them in parallel, keep them separate until you get it figured out.

Hi and thanks,
Looks like an excellent device.

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**brettw** · 09-02-2019, 09:50 AM

Batteries rested over night
Now at 6.36 and 6.42

Good numbers?

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**Atimm693** · 09-02-2019, 12:17 PM

Originally Posted by brettw

Batteries rested over night
Now at 6.36 and 6.42

Good numbers?

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Fully charged 6v should be somewhere around 6.6. That number is not all that important though and seems to vary between batteries.

I would load test them real quick with something like this. Most parts stores do it for free if you don't want to buy the tool, but they're pretty handy. A load test is the only way to accurately check battery capacity.

100 Amp 6/12V Battery Load Tester

**CatFan** · 09-02-2019, 01:20 PM

I think you either have a bad battery or one that isn’t charged. My guess is the one NOT bubbling is bad.

**brettw** · 09-03-2019, 05:39 AM

Originally Posted by CatFan

I think you either have a bad battery or one that isn’t charged. My guess is the one NOT bubbling is bad.

I reversed the leads on the 2 6v batteries.
Both bubbled

Load test next

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