Recipe for manual battery charging
So from start to finish, what is the recipe for charging a battery up (when charging time is to be minimized) from 50% SOC? Here's a 100 AH battery as an example. Please correct my errors and omissio...
Forum Discussion
You can just follow the established rules for charging deep cycle batteries.
Consider this brochure report from Progressive dynamics
"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."
If you want to recharge your battery in three hours time that has been discharged to around 40-50% charge state, start out with 14.4VDC output from your portable charger. Run this for two hours... Then change the portable charger to 13.6VDC output and charge for an additional ONE hour.
Your battery should now be at 90% SOC and can be used right away and give full performance. A quick test would be to let the battery settle down for a few minutes and make a measurement across the battery terminals. It should read 12.5-6VDC
If you want to get a FULL 100% charge state then after the ONE HOUR of 13.6VDC drop the DC voltage down to 13.2VDC and run for an additional 9-10 hours. Then let the battery settle down for a few minutes and you should now read 12.6-7VDC at the terminals.
This is what I would do at any rate if all I had was a portable battery charger.
You are just duplicating what the smart mode chargers do automatically with your manual DC Voltage settings...The batteries being charged will determine how many amps are being drawn. You just have to have around 20AMP of current available to use per battery being charged. i.e My three 85AH Interstate batteries start out drawing around 53 AMPS from my PD9260C converter/charger when I first hit them with 14.4DC. After two hours the current has dropped down to around 8AMPS. When it switches to 13.6VDC charge voltage it drops to around 6AMPS and stays at that level for the additional hour of charging.
This is what I measure at any rate when I am re-charging my three 85AH Interstate batteries in parallel.
Roy Ken
Consider this brochure report from Progressive dynamics
"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."
If you want to recharge your battery in three hours time that has been discharged to around 40-50% charge state, start out with 14.4VDC output from your portable charger. Run this for two hours... Then change the portable charger to 13.6VDC output and charge for an additional ONE hour.
Your battery should now be at 90% SOC and can be used right away and give full performance. A quick test would be to let the battery settle down for a few minutes and make a measurement across the battery terminals. It should read 12.5-6VDC
If you want to get a FULL 100% charge state then after the ONE HOUR of 13.6VDC drop the DC voltage down to 13.2VDC and run for an additional 9-10 hours. Then let the battery settle down for a few minutes and you should now read 12.6-7VDC at the terminals.
This is what I would do at any rate if all I had was a portable battery charger.
You are just duplicating what the smart mode chargers do automatically with your manual DC Voltage settings...The batteries being charged will determine how many amps are being drawn. You just have to have around 20AMP of current available to use per battery being charged. i.e My three 85AH Interstate batteries start out drawing around 53 AMPS from my PD9260C converter/charger when I first hit them with 14.4DC. After two hours the current has dropped down to around 8AMPS. When it switches to 13.6VDC charge voltage it drops to around 6AMPS and stays at that level for the additional hour of charging.
This is what I measure at any rate when I am re-charging my three 85AH Interstate batteries in parallel.
Roy Ken
