Here if a nifty chart showing the approximate charge status of a battery verses DC VOLTS...
![](http://3.bp.blogspot.com/_qtbKtwygtXs/TTDTlnImolI/AAAAAAAAIsI/CpvnBOwklEA/s1600/battery%252Bvoltage%252Bchart.jpg)
There is a science to charging deep cycle 12VDC batteries...
"This is what PROGRESSIVE Dynamics states in their operating manual on how long it takes to charge a battery using the DC VOLTAGEs listed below: "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 based on having 17-20AMPS DC current available for each battery in your battery bank... NOTE That Progressive Dynamics doesn't even list using DC Charge Voltages around the 12.0VC range as this would take alot more than 100 hours to achieve a 90% or 100% charge state."
Each battery in your battery bank will want to demand 17-20AMPS DC current when you first hit them with 14.4VDC Charge voltage...
A trickle charge charrge is only good for topping off batteries...
Also your 1000WATT POWER INVERTER wants to demand around 85AMPS DC CURRENT if fully loaded. That a pretty good amount of current to pull from a battery... They will only hold up for maybe 5 minutes at most. The POWER INVERTERs also will want to have very large DC CABLES connected to the battery terminals to perform properly
More to this battery thing that meets the eye haha...
Roy Ken
My Posts are IMHO based on my experiences - Words in CAPS does not mean I am shouting
Roy - Carolyn
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