6v or 12v?
All else being equal, which is preferable and why? 2 220 AH 6v batteries or 2 110 AH 12v batteries
Forum Discussion
Hi,
Since the current for twin six volts is going to be double that of twelve volt jars in parallel, there is MORE chance of plates warping from high loads. I do push my bank hard sometimes demanding nearly 200 amps. My highest recorded demand was 278 amps.
Positive plate shedding is impossible to reverse. The deeper the cycle the greater the shedding. Double the current and double the shedding. Eventually that will short out a cell in a flooded jar.
My longest lasting 12 volt jar was a marine battery that I used as a starter. I purchased it in 2004, and replaced it in 2016, not because it had failed but because it had started to exhibit corrosion around the posts.
If you are a weekend warrior, add some solar and the battery bank life will increase dramatically (if a decent charge controller is used).
Since the current for twin six volts is going to be double that of twelve volt jars in parallel, there is MORE chance of plates warping from high loads. I do push my bank hard sometimes demanding nearly 200 amps. My highest recorded demand was 278 amps.
Positive plate shedding is impossible to reverse. The deeper the cycle the greater the shedding. Double the current and double the shedding. Eventually that will short out a cell in a flooded jar.
My longest lasting 12 volt jar was a marine battery that I used as a starter. I purchased it in 2004, and replaced it in 2016, not because it had failed but because it had started to exhibit corrosion around the posts.
If you are a weekend warrior, add some solar and the battery bank life will increase dramatically (if a decent charge controller is used).
Oldfordman wrote:
Biggest advantage to a pair of 6v batteries for a 12V system vs single 12V is the plate size in the 6V. It will stand up to more charge/discharge cycles as well as supply high currents with less plate damage.
