I have two 6-volt batteries wired in series. If I understand this right, this gives me 12 volts and 100 amp. If I had two 12-volt batteries wired in parallel I would have 200 amps. Can I switch to 2@ 12 volt batteries without problems with the power inverter or do I have to change or upgrade power inverter.

Most 6V GC batteries used in RVs are 230A giving you 12V at 230Ah. Most 12V RV batteries are about 80Ah giving you 160Ah. Marine deep cycle batteries are a compromise and not much better than starting batteries. You can switch to 12V batteries. Battery terminals and cable may be different.You can buy 12V deep cycle batteries but they are expensive and they are NOT marine batteries.

BTW Look up the specs for your 6V batteries. Look up the specs for the 12V batteries you want to buy. Most likely they will not have a Ah rating but a CCA as they are starting batteries. Nothing wrong/right with your proposal but rather the two are not equivalent considering capability and cost.

The Trojan J150 is a 12 volt true deep cycle battery for you to consider. 150 AHhttp://www.trojanbattery.com/pdf/datasheets/J150_Trojan_Data_Sheets.pdf

I used to do a lot of work for pleasure boat owners. I learned some things. Should you decide to parallel 12V jars, please carry at least one full box of baking soda. You may need this when there is a battery explosion. This is unlikely in three years, still not bad by five years, but after that, the chance becomes much better. This is only for two batteries that are IDENTICAL and have always been together and are strapped to distribute the load equally. I have never seen an explosion of any 6V jars in series.Matt

Matt,How about explosion/issues with 4x 6V for 12V?

6 volt batteries in series | Good Sam Community

23 Replies

Lwiddis
Explorer II
Mar 25, 2020
The Trojan J150 is a 12 volt true deep cycle battery for you to consider. 150 AH

http://www.trojanbattery.com/pdf/datasheets/J150_Trojan_Data_Sheets.pdf
CA_Traveler
Explorer III
Mar 25, 2020
BTW Look up the specs for your 6V batteries.

Look up the specs for the 12V batteries you want to buy. Most likely they will not have a Ah rating but a CCA as they are starting batteries.

Nothing wrong/right with your proposal but rather the two are not equivalent considering capability and cost.
CA_Traveler
Explorer III
Mar 25, 2020
Most 6V GC batteries used in RVs are 230A giving you 12V at 230Ah. Most 12V RV batteries are about 80Ah giving you 160Ah. Marine deep cycle batteries are a compromise and not much better than starting batteries.

You can switch to 12V batteries. Battery terminals and cable may be different.

You can buy 12V deep cycle batteries but they are expensive and they are NOT marine batteries.

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6 volt batteries in series

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