12V or 6V Batteries - Which charge Better?
I plan to switch to two 6V batteries in series, but before I do, I need to ask this question. When the batteries are drained and in need of charging, which will charge back up to full FASTER? Two ...
Forum Discussion
The time a deep cycle battery takes to re-charge depends on the DC Charging voltage and how much DC Current it can pull from your charger.
A 12VDC Deep Cycle battery will usually get to its 90% charge state in a short three hour time if you present 14.4VDC Charging voltage with the capacity of 17-20AMPS DC CURRENT per battery being charged..
Consider what PROGRESSIVE DYNAMICS says in just about all of their converter/charger manuals on how long it takes a typical deep cycle battery to re-charge.
"Progressive Dynamics ran this test on the amount of time it took a PD9155 (55-amp) converter/charger set to three different output voltages to recharge a 125 AH (Amp Hour) battery after it was fully discharged to 10.5-volts. 14.4-VOLTS (Boost Mode) –
Returned the battery to 90% of full charge in approximately 3-hours. The battery reached full charge in approximately 11 hours.
13.6-VOLTS (Normal Mode) – Required 40-hours to return the battery to 90% of full charge and 78-hours to reach full charge.
13.2-VOLTS (Storage Mode) – Required 60-hours to return the battery to 90% of full charge and 100-hours to reach full charge."
This is battery charging science at play here. You can charge your battery quicker by raising the 14.4VDC to a higher DC VOLTAGE and the battery will then demand more charging current. The downside to doing this is you will start boiling out the battery fluids if you are charging with more than approximately 14.4VDC at a higher DC CURRENT demand.
I can re-charge my 12VDC batteries back up to their 90% charge state in about three hours charging time and can expect almost full performance capacity out of my battery. I can do this 50% to 90% charge cycle for 12-14 times where I must do a full 100% charge state. Continuing to re-charge only up to the 90% charge state without doing a full 100% charge cycle will do harm to your batteries.
In your case of using two two 6VDC batteries in series you would charge the two of them at the same using the 14.4VDC charging voltage. This would be considered one 12VDC battery.
Some batteries will deviate a tad from the 14.4VDC depending on how they were made. Trojan likes to have a higher charging DC Voltage...
This is all based on my experiences - no expert here by any means...
Roy Ken
A 12VDC Deep Cycle battery will usually get to its 90% charge state in a short three hour time if you present 14.4VDC Charging voltage with the capacity of 17-20AMPS DC CURRENT per battery being charged..
Consider what PROGRESSIVE DYNAMICS says in just about all of their converter/charger manuals on how long it takes a typical deep cycle battery to re-charge.
"Progressive Dynamics ran this test on the amount of time it took a PD9155 (55-amp) converter/charger set to three different output voltages to recharge a 125 AH (Amp Hour) battery after it was fully discharged to 10.5-volts. 14.4-VOLTS (Boost Mode) –
Returned the battery to 90% of full charge in approximately 3-hours. The battery reached full charge in approximately 11 hours.
13.6-VOLTS (Normal Mode) – Required 40-hours to return the battery to 90% of full charge and 78-hours to reach full charge.
13.2-VOLTS (Storage Mode) – Required 60-hours to return the battery to 90% of full charge and 100-hours to reach full charge."
This is battery charging science at play here. You can charge your battery quicker by raising the 14.4VDC to a higher DC VOLTAGE and the battery will then demand more charging current. The downside to doing this is you will start boiling out the battery fluids if you are charging with more than approximately 14.4VDC at a higher DC CURRENT demand.
I can re-charge my 12VDC batteries back up to their 90% charge state in about three hours charging time and can expect almost full performance capacity out of my battery. I can do this 50% to 90% charge cycle for 12-14 times where I must do a full 100% charge state. Continuing to re-charge only up to the 90% charge state without doing a full 100% charge cycle will do harm to your batteries.
In your case of using two two 6VDC batteries in series you would charge the two of them at the same using the 14.4VDC charging voltage. This would be considered one 12VDC battery.
Some batteries will deviate a tad from the 14.4VDC depending on how they were made. Trojan likes to have a higher charging DC Voltage...
This is all based on my experiences - no expert here by any means...
Roy Ken
