Amp Hours to Kilowatt Hours
For all you electrically minded folks. I have a 4-D 12 volt battery in my fiver. While dry camping, I am drawing it down to about 50 percent(12.09volts) twice a day. I am recharging with my generator ...
Forum Discussion
You can get almost the rated battery performance by just re-charging to the 90% SOC but you can only do about 12-14 cycles of 50% SOC - 90% soc before having to do a full 100% SOC. Otherwise you start doing damage to the battery.
Consider this 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."
This is battery charging science - not many ways to get around it...
The rule of thumb is to have a charging source capable of producing those DC VOLTAGES listed here @ 15-18AMPS DC per battery in the bank. This is how many amps the battery will pull if you hit it with 14.4VDC. Around three hours later the battery will be at its 90% charge state. The charging current will drop back as the battery starts taking on charge.
So says the battery exports on here...
Roy Ken
Consider this 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."
This is battery charging science - not many ways to get around it...
The rule of thumb is to have a charging source capable of producing those DC VOLTAGES listed here @ 15-18AMPS DC per battery in the bank. This is how many amps the battery will pull if you hit it with 14.4VDC. Around three hours later the battery will be at its 90% charge state. The charging current will drop back as the battery starts taking on charge.
So says the battery exports on here...
Roy Ken
